CN215266578U - Connecting sheet for lithium battery - Google Patents
Connecting sheet for lithium battery Download PDFInfo
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- CN215266578U CN215266578U CN202122885759.0U CN202122885759U CN215266578U CN 215266578 U CN215266578 U CN 215266578U CN 202122885759 U CN202122885759 U CN 202122885759U CN 215266578 U CN215266578 U CN 215266578U
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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 utility model relates to the technical field of lithium batteries, in particular to a connecting sheet for a lithium battery; the lithium battery positive electrode comprises a connecting sheet and welding assemblies arranged at two ends of the connecting sheet and used for being sleeved outside the positive electrodes of adjacent lithium batteries; the welding assembly comprises an annular plate attached to one side, located on the positive electrode, of the lithium battery, and a through hole for the positive electrode to penetrate through is formed in the middle of the annular plate; the upper end of the annular plate is provided with an annular bulge which is coaxially arranged with the through hole, and the inner diameter of the annular bulge is larger than that of the through hole; a lantern ring sleeved outside the anode is arranged in the annular bulge, and the lantern ring is connected with the end part of the connecting sheet; the utility model discloses a setting of welding assembly can realize the installation of connection piece and stably fixed before the welding fast, for subsequent welding improves the advantage, reduces to appear leaking the probability that welds unusually such as welding, rosin joint, deep-fry fire, and then reduces the rejection rate.
Description
Technical Field
The utility model relates to a lithium cell technical field, concretely relates to connection piece for lithium cell.
Background
The battery pack refers to series-parallel connection of batteries, the voltage of each battery is required to be the same by the parallel battery pack, the parallel battery pack can provide stronger current, and the battery pack is widely applied to the fields of automobiles, electric bicycles, photovoltaic energy storage and the like.
The existing battery pack is characterized in that batteries are connected together through metal sheets, the metal sheets and the batteries are connected in a welding mode, the metal sheets are flat sheets, protruding points are arranged on the metal sheets, and the metal sheets are welded on the anodes of the batteries by using a spot welding machine to align the positions of the protruding points.
However, when a thin metal sheet is welded on a battery core, the welding process has high requirements on welding process parameters, and due to the fact that the metal sheet and the positive electrode are not easy to be stably fixed, welding abnormalities such as missing welding, false welding and fire explosion are easy to occur, and the rejection rate is high.
SUMMERY OF THE UTILITY MODEL
Solves the technical problem
To the above-mentioned shortcoming that prior art exists, the utility model provides a connection piece for lithium cell can solve effectively among the prior art because be difficult for stably fixed between sheetmetal and the positive pole, welding such as the easy appearance is leaked welding, rosin joint, deep-fry fire unusual, leads to the higher problem of rejection rate.
Technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
the utility model provides a connecting sheet for lithium batteries, which comprises a connecting sheet and welding components arranged at the two ends of the connecting sheet and used for being sleeved outside the anodes of adjacent lithium batteries; the welding assembly comprises an annular plate attached to one side, located on the positive electrode, of the lithium battery, and a through hole for the positive electrode to penetrate through is formed in the middle of the annular plate; the upper end of the annular plate is provided with an annular bulge which is coaxially arranged with the through hole, and the inner diameter of the annular bulge is larger than that of the through hole; a lantern ring sleeved outside the anode is arranged in the annular bulge, and the lantern ring is connected with the end part of the connecting sheet; the annular protrusion is provided with a rotary sleeve in threaded connection with the annular protrusion, an annular cover plate is arranged at the upper end of the rotary sleeve, two groups of semicircular welding plates are symmetrically arranged on the inner side of the annular cover plate, the welding plates can tightly press the upper end of the anode when the rotary sleeve is screwed on the annular protrusion, and a long and thin welding groove is formed between the welding plates.
When the welding assembly is used, the annular plate is sleeved outside the anodes of two adjacent lithium batteries before welding, then the sleeve ring is sleeved outside the anode and is positioned in the annular protrusion, and finally the purpose of compressing the connecting sheet and limiting the swinging of the rotary sleeve is achieved by rotationally locking the rotary sleeve outside the annular protrusion, so that the connecting sheet can be quickly installed and stably fixed before welding, favorable conditions are improved for subsequent welding, the probability of welding abnormity such as welding missing, false welding, fire explosion and the like is reduced, and the rejection rate is reduced; set up welding plate and welding groove, facilitate the use spot welder with the welding plate welding on corresponding battery positive pole, the solder joint is general two during actual welding, is located the both sides in welding groove respectively.
Furthermore, the outer side of the annular protrusion is provided with an external thread, and the lower part of the inner side of the rotary sleeve is provided with an internal thread matched with the internal thread.
Furthermore, the lower part of the side surface of the rotary sleeve is provided with an avoiding groove for avoiding the connecting sheet when the rotary sleeve is tightly sleeved. By avoiding the arrangement of the groove, on one hand, the problem that welding quality is influenced due to the fact that the welding plate cannot be attached to the anode because the rotary sleeve is blocked by the connecting sheet when moving downwards can be avoided; on the other hand, whether the rotary sleeve is locked or not can be judged by observing the distance between the side surface of the connecting sheet and one side of the avoiding groove, so that the welding plate is attached to the anode, and the subsequent welding quality is guaranteed.
Further, the lantern ring is embraced tight piece and fixed the piece of embracing tightly by split type activity and is constituteed, the activity is embraced tightly the piece and fixed the piece of embracing tightly is semi-annular elastic metal plate, there is the gap when the activity is embraced between the both ends of tightly piece and fixed the piece of embracing tightly, fixed the piece of embracing tightly and connection piece fixed connection. Through embracing tight piece and fixed the piece of embracing tightly with the lantern ring split into two split type activities, can enough sheathe in one side and fix from the opposite side after embracing tight piece and sheathe in activity and embrace tight piece, avoid anodal external diameter too big and lead to the inconvenient problem of installation of the lantern ring, can embrace tight piece and fixed the piece of embracing tightly through its inboard extrusion activity again when the cover moves down soon simultaneously, make the gap between it reduce, and then make the lantern ring can tightly suit anodal outside, ensure to be connected stably between connection piece and the anodal before the welding, guarantee welding quality.
Furthermore, the lower end of the annular cover plate is provided with a conical surface which is gradually folded inwards from bottom to top, the lower end of the conical surface is attached to the inner wall of the rotary sleeve, and the upper end of the conical surface is attached to the lower end of the welding plate. Because the error in the actual production, anodal external diameter is not of uniform size, consequently through the setting of conical surface, can be when the cover that revolves moves down inwards the extrusion activity gradually and embrace tightly the piece and fix and embrace tightly the piece for the gap further reduces, and then makes the lantern ring stabilize and embrace tightly the positive pole.
Further, the periphery of the lower end of the welding plate is provided with a circle of elastic pieces which are obliquely arranged, and the elastic pieces gradually rise along the rotating and locking direction of the rotary sleeve. Through the arrangement of the elastic piece, on one hand, the purpose of being similar to an agnail is realized by utilizing the inclined structure of the elastic piece, the looseness caused by the reverse rotation of the rotary sleeve is avoided, and the connection stability is further ensured; on the other hand, the elastic force of the elastic sheet increases the pressure between the external thread and the internal thread, so that the friction force between the external thread and the internal thread is increased, and the looseness caused by the reverse rotation of the rotary sleeve is further avoided, so that the purposes of stable connection and welding quality guarantee are achieved.
Advantageous effects
The utility model provides a technical scheme compares with known public technique, has following beneficial effect:
the utility model discloses a setting of welding assembly can realize the installation of connection piece and stably fixed before the welding fast, for subsequent welding improves the advantage, reduces to appear leaking the probability that welds unusually such as welding, rosin joint, deep-fry fire, and then reduces the rejection rate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a perspective view of a viewing angle of the present invention;
fig. 2 is a perspective view of another perspective of the present invention;
the reference numerals in the drawings denote: 1. an annular plate; 2. an annular projection; 3. an external thread; 4. a movable clasping block; 5. fixing the clasping block; 6. a gap; 7. connecting sheets; 8. screwing a sleeve; 9. an avoidance groove; 10. an annular cover plate; 11. welding the plate; 12. welding a groove; 13. a conical surface; 14. an elastic sheet; 15. an internal thread.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example (b):
as shown in fig. 1-2, a connecting sheet for a lithium battery includes a connecting sheet 7 and welding assemblies disposed at two ends thereof and used for being sleeved outside anodes of adjacent lithium batteries; the welding assembly comprises an annular plate 1 attached to one side, located on the positive electrode, of the lithium battery, and a through hole for the positive electrode to penetrate through is formed in the middle of the annular plate 1; the upper end of the annular plate 1 is provided with an annular bulge 2 which is coaxially arranged with the through hole, and the inner diameter of the annular bulge 2 is larger than that of the through hole; a lantern ring sleeved outside the positive electrode is arranged in the annular bulge 2, and the lantern ring is connected with the end part of the connecting sheet 7; the annular protrusion 2 is provided with a rotary sleeve 8 in threaded connection with the annular protrusion, the upper end of the rotary sleeve 8 is provided with an annular cover plate 10, two groups of semicircular welding plates 11 are symmetrically arranged on the inner side of the annular cover plate 10, the welding plates 11 can tightly press the upper end of the anode when the rotary sleeve 8 is tightly sleeved on the annular protrusion 2, and a long and thin welding groove 12 is formed between the welding plates 11.
When the welding assembly is used, the annular plate 1 is sleeved outside the anodes of two adjacent lithium batteries before welding, then the sleeve ring is sleeved outside the anode and is positioned in the annular protrusion 2, and finally the purpose of compressing the connecting sheet 7 and limiting the swinging of the rotary sleeve 8 is achieved by rotationally locking the rotary sleeve 8 outside the annular protrusion 2, so that the connecting sheet 7 can be quickly installed and stably fixed before welding, favorable conditions are improved for subsequent welding, the probability of welding abnormity such as welding missing, false welding, fire explosion and the like is reduced, and the rejection rate is reduced; set up welding plate 11 and welding groove 12, facilitate the use spot welder with welding plate 11 on corresponding battery positive pole, the solder joint is general two during actual welding, is located the both sides of welding groove 12 respectively.
As an alternative, the outer side of the annular protrusion 2 is provided with an external thread 3, and the lower part of the inner side of the rotary sleeve 8 is provided with an internal thread 15 matched with the external thread.
As an alternative, the lower part of the side surface of the rotary sleeve 8 is provided with an avoidance groove 9 for avoiding the connecting sheet 7 when the rotary sleeve is tightly sleeved. By means of the avoiding groove 9, on one hand, the problem that welding quality is affected due to the fact that the welding plate 11 cannot be attached to the positive electrode because the rotary sleeve 8 is blocked by the connecting sheet 7 when moving downwards can be avoided; on the other hand, whether the rotary sleeve 8 is locked or not can be judged by observing the distance between the side surface of the connecting sheet 7 and one side of the avoiding groove 9, so that the welding plate 11 is attached to the anode, and the subsequent welding quality is guaranteed.
As an optional scheme, the lantern ring is embraced tight piece 4 by split type activity and is fixed 5 constituteing of embracing tightly, the activity is embraced tight piece 4 and fixed 5 of embracing tightly and is the elastic metal sheet of semicircular, there is gap 6 when the activity is embraced between tight piece 4 and the fixed both ends of embracing tightly 5, fixed 5 and the connection piece 7 fixed connection of embracing tightly. Through embracing tight piece 4 and fixed the piece 5 of embracing tightly with the lantern ring split into two split type activities, can enough sheathe in one side and fix from the opposite side again and sheathe in the activity after embracing tight piece 5 and embrace tight piece 4, avoid anodal external diameter too big and lead to the inconvenient problem of installation of the lantern ring, can embrace tight piece 4 and fixed the piece 5 of embracing tightly through its inboard extrusion activity when revolving cover 8 moves down simultaneously again, make the gap 6 between it reduce, and then make the lantern ring can tightly suit anodally outside, ensure to be connected stably between connection piece 7 and the anodal before the welding, guarantee welding quality.
As an optional scheme, the lower end of the annular cover plate 10 is provided with a conical surface 13 gradually converging from bottom to top towards the inner side, the lower end of the conical surface 13 is attached to the inner wall of the rotating sleeve 8, and the upper end of the conical surface 13 is attached to the lower end of the welding plate 11. Because the error in the actual production, anodal external diameter size is inconsistent, consequently through the setting of conical surface 13, can inwards extrude the activity gradually and embrace tightly piece 4 and fixed tightly piece 5 of embracing when revolving sleeve 8 moves down for gap 6 further reduces, and then makes the lantern ring stably embrace tightly the positive pole.
As an alternative, the periphery of the lower end of the welding plate 11 is provided with a circle of elastic pieces 14 which are arranged obliquely, and the elastic pieces 14 are gradually raised along the rotation locking direction of the turnbuckle 8. Through the arrangement of the elastic piece 14, on one hand, the purpose of being similar to an agnail is realized by utilizing the inclined structure of the elastic piece, the looseness caused by the reverse rotation of the rotary sleeve 8 is avoided, and the connection stability is further ensured; on the other hand, the elastic force of the elastic sheet 14 increases the pressure between the external thread 3 and the internal thread 15, so as to increase the friction force between the external thread and the internal thread, further avoid the loosening caused by the reverse rotation of the rotary sleeve 8, and further achieve the purposes of stable connection and welding quality guarantee.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. A connecting sheet for a lithium battery is characterized by comprising a connecting sheet (7) and welding assemblies which are arranged at two ends of the connecting sheet and are sleeved outside anodes of adjacent lithium batteries; the welding assembly comprises an annular plate (1) attached to one side, located on the positive electrode, of the lithium battery, and a through hole for the positive electrode to penetrate through is formed in the middle of the annular plate (1); the upper end of the annular plate (1) is provided with an annular bulge (2) which is coaxially arranged with the through hole, and the inner diameter of the annular bulge (2) is larger than that of the through hole; a lantern ring sleeved outside the anode is arranged in the annular bulge (2), and the lantern ring is connected with the end part of the connecting sheet (7); annular arch (2) top is provided with rather than threaded connection's cover (8) soon, it is provided with annular apron (10) to revolve cover (8) upper end, annular apron (10) inboard symmetry is provided with two sets of semicircular welded plates (11), welded plate (11) can compress tightly anodal upper end when revolving cover (8) rotatory cover tightly annular arch (2), form a long and thin welded groove (12) between welded plate (11).
2. The connecting piece for the lithium battery as claimed in claim 1, wherein the outer side of the annular protrusion (2) is provided with an external thread (3), and the lower part of the inner side of the rotary sleeve (8) is provided with an internal thread (15) matched with the external thread.
3. The connecting piece for the lithium battery as claimed in claim 2, wherein the lower part of the side surface of the rotary sleeve (8) is provided with an avoiding groove (9) for avoiding the connecting piece (7) when the rotary sleeve is tightly sleeved.
4. The connecting piece for the lithium battery according to claim 3, wherein the sleeve ring is composed of a split type movable holding block (4) and a split type fixed holding block (5), the movable holding block (4) and the split type fixed holding block (5) are both semi-annular elastic metal plates, a gap (6) initially exists between two ends of the movable holding block (4) and the fixed holding block (5), and the fixed holding block (5) is fixedly connected with the connecting piece (7).
5. The connecting sheet for the lithium battery as claimed in claim 4, wherein the lower end of the annular cover plate (10) is provided with a conical surface (13) which gradually converges from bottom to top towards the inner side, the lower end of the conical surface (13) is attached to the inner wall of the rotating sleeve (8), and the upper end of the conical surface (13) is attached to the lower end of the welding plate (11).
6. A lithium battery connecting sheet according to claim 5, characterized in that the welding plate (11) is provided with a circle of elastic sheets (14) arranged obliquely at the periphery of the lower end, and the elastic sheets (14) are gradually raised along the rotation locking direction of the rotary sleeve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122885759.0U CN215266578U (en) | 2021-11-24 | 2021-11-24 | Connecting sheet for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122885759.0U CN215266578U (en) | 2021-11-24 | 2021-11-24 | Connecting sheet for lithium battery |
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| Publication Number | Publication Date |
|---|---|
| CN215266578U true CN215266578U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122885759.0U Active CN215266578U (en) | 2021-11-24 | 2021-11-24 | Connecting sheet for lithium battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976499A (en) * | 2022-05-27 | 2022-08-30 | 孚能科技(赣州)股份有限公司 | Electricity core coupling assembling and battery module |
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2021
- 2021-11-24 CN CN202122885759.0U patent/CN215266578U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976499A (en) * | 2022-05-27 | 2022-08-30 | 孚能科技(赣州)股份有限公司 | Electricity core coupling assembling and battery module |
| CN114976499B (en) * | 2022-05-27 | 2024-05-17 | 孚能科技(赣州)股份有限公司 | Battery cell connecting assembly and battery module |
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