CN201910457U - Short-circuit-preventive low-internal-resistance lithium ion power battery tab - Google Patents
Short-circuit-preventive low-internal-resistance lithium ion power battery tab Download PDFInfo
- Publication number
- CN201910457U CN201910457U CN2011200165519U CN201120016551U CN201910457U CN 201910457 U CN201910457 U CN 201910457U CN 2011200165519 U CN2011200165519 U CN 2011200165519U CN 201120016551 U CN201120016551 U CN 201120016551U CN 201910457 U CN201910457 U CN 201910457U
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- Prior art keywords
- loam cake
- positive
- group
- negative
- strap
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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
Abstract
The utility model discloses a short-circuit-preventive low-internal-resistance lithium ion power battery tab, which relates to a lithium ion power battery tab. The short-circuit-preventive low-internal-resistance lithium ion power battery tab solves the problems that a diaphragm is easily damaged by sparks generated during welding of an existing battery tab so as to cause short circuit of a battery. N positive tabs of the short-circuit-preventive low-internal-resistance lithium ion power battery tab are welded to form a battery cell positive tab group, N+1 negative tabs are welded to form a battery cell negative tab group, the battery cell positive tab group is riveted together with an upper cover anode connecting sheet, the battery cell negative tab group is riveted together with an upper cover cathode connecting sheet, at least one aluminum or aluminum alloy strap is attached onto the battery cell positive tab group, the battery cell positive tab group is integrally welded with the upper cover anode connecting sheet via the aluminum or aluminum alloy straps, at least one nickel or nickel alloy strap is attached on the battery cell negative tab group, and the battery cell negative tab group is integrally welded with the upper cover cathode connecting sheet via the nickel or nickel alloy straps. The short-circuit-preventive low-internal-resistance lithium ion power battery tab is applicable into lithium ion power batteries.
Description
Technical field
The utility model relates to a kind of lithium-ion-power cell lug, is specifically related to a kind of low internal resistance Li-ion electrokinetic cell lug of anti-short circuit.
Background technology
Lithium-ion-power cell is because plurality of advantages such as its environmental protection, safety, life-span length are subjected to extensive concern in recent years.Lithium dynamical battery also gos deep into and expansion gradually in the application in electric automobile field, for the high magnification that satisfies electric automobile charges and discharge performance, requires lithium-ion-power cell to have lower internal resistance.
China Patent No. is that 201020168137.5 utility model patent discloses " a kind of little lithium-ion-power cell of internal resistance that contacts ", propose elder generation with the lug riveted joint, used supersonic welder, resistance welder that anode ear group, negative electrode lug group are welded again respectively.Anode ear group and positive strap are welded together, negative electrode lug group and negative pole brace are welded together, the battery pole ear that the welding back forms has effectively reduced contact resistance, but the fragile barrier film of the spark that existing battery pole ear produces in welding process causes battery short circuit.
The utility model content
The purpose of this utility model is in order to solve the fragile barrier film of spark that existing battery pole ear produces in welding process, to cause the problem of battery short circuit, and then a kind of low internal resistance Li-ion electrokinetic cell lug of anti-short circuit is provided.
The technical solution of the utility model is: a kind of low internal resistance Li-ion electrokinetic cell lug of anti-short circuit comprises loam cake, lower casing, N anode ear, N+1 negative electrode lug, N positive plate, N+1 negative plate and a plurality of barrier film, loam cake 1 comprises upper casing, the loam cake positive strap, loam cake negative pole brace, positive pole draws post and negative pole draws post, the upper surface of upper casing is provided with that positive pole draws post and negative pole draws post, the lower surface of upper casing is provided with loam cake positive strap and loam cake negative pole brace, and positive pole draws post and loam cake positive strap corresponding setting up and down, negative pole draws post and the corresponding setting up and down of loam cake negative pole brace, N+1 negative plate and N positive plate stack at interval, isolate by a barrier film between N+1 negative plate and N positive plate, the upper end of each positive plate is connected with an anode ear, the upper end of each negative plate is connected with a negative electrode lug, N anode ear is welded to form electric core anode ear group, N+1 negative electrode lug is welded to form electric core negative electrode lug group, it is a closure casing that loam cake and lower casing fasten, electricity core anode ear group, electricity core negative electrode lug group, N positive plate, N+1 negative plate and a plurality of barrier film all place the inside of described closure casing, a kind of low internal resistance Li-ion electrokinetic cell lug of anti-short circuit also comprises at least one aluminium strip or aluminum alloy strip and at least one nickel strap or nickel alloy strip, electricity core anode ear group and loam cake positive strap are riveted together, electricity core negative electrode lug group and loam cake negative pole brace are riveted together, at least attach an aluminium strip or aluminum alloy strip on the electricity core anode ear group, seeing through aluminium strip or aluminum alloy strip is one with electric core anode ear group and loam cake positive strap laser welding, at least attach a nickel strap or nickel alloy strip on the electricity core negative electrode lug group, seeing through nickel strap or nickel alloy strip is one with electric core negative electrode lug group and loam cake negative pole brace laser welding, and the value of N is the natural number of 4-160.
The utility model compared with prior art has following effect: 1. the utility model has been eliminated the contact resistance between lug group and the loam cake brace, thereby has reduced the internal resistance of battery, avoids damaging pole piece.2. effectively prevented to produce spark in the welding process attached to the aluminium strip on the lug group or aluminum alloy strip, nickel strap or nickel alloy strip before the welding, avoided owing to weld the short circuit that causes, and improved the circulation of battery and the chemical property that multiplying power charges and discharge.
Description of drawings
Fig. 1 is the syndeton schematic diagram of electric core anode ear group of the present utility model, electric core negative electrode lug group, positive plate, negative plate and barrier film; Fig. 2 is the structural representation of loam cake; Fig. 3 is the A place enlarged drawing of Fig. 1; Fig. 4 is an overall structure schematic diagram of the present utility model.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1-Fig. 4, the low internal resistance Li-ion electrokinetic cell lug of a kind of anti-short circuit of present embodiment comprises loam cake 1, lower casing 2, N anode ear 3, N+1 negative electrode lug 4, N positive plate 5, N+1 negative plate 6 and a plurality of barrier film 7, loam cake 1 comprises upper casing 1-1, loam cake positive strap 1-2, loam cake negative pole brace 1-3, positive pole draws post 1-4 and negative pole draws post 1-5, the upper surface of upper casing 1-1 is provided with that positive pole draws post 1-4 and negative pole draws post 1-5, the lower surface of upper casing 1-1 is provided with loam cake positive strap 1-2 and loam cake negative pole brace 1-3, and positive pole draws post 1-4 and loam cake positive strap 1-2 corresponding setting up and down, negative pole draws post 1-5 and loam cake negative pole brace 1-3 corresponding setting up and down, N+1 negative plate 6 stacks at interval with N positive plate 5, isolate by a barrier film 7 between N+1 negative plate 6 and N positive plate 5, the upper end of each positive plate 5 is connected with an anode ear 3, the upper end of each negative plate 6 is connected with a negative electrode lug 4, N anode ear 3 is welded to form electric core anode ear group 8, N+1 negative electrode lug 4 is welded to form electric core negative electrode lug group 9, it is a closure casing that loam cake 1 fastens with lower casing 2, electricity core anode ear group 8, electricity core negative electrode lug group 9, N positive plate 5, N+1 negative plate 6 and a plurality of barrier film 7 all place the inside of described closure casing, a kind of low internal resistance Li-ion electrokinetic cell lug of anti-short circuit also comprises at least one aluminium strip or aluminum alloy strip 10 and at least one nickel strap or nickel alloy strip 11, electricity core anode ear group 8 is riveted together with loam cake positive strap 1-2, electricity core negative electrode lug group 9 is riveted together with loam cake negative pole brace 1-3, at least attach an aluminium strip or aluminum alloy strip 10 on the electricity core anode ear group 8, seeing through aluminium strip or aluminum alloy strip 10 is one with electric core anode ear group 8 with loam cake positive strap 1-2 laser welding, at least attach a nickel strap or nickel alloy strip 11 on the electricity core negative electrode lug group 9, seeing through nickel strap or nickel alloy strip 11 is one with electric core negative electrode lug group 9 with loam cake negative pole brace 1-3 laser welding, and the value of N is the natural number of 4-160.
Embodiment two: in conjunction with Fig. 4 present embodiment is described, the quantity of the aluminium strip of present embodiment or aluminum alloy strip 10 and nickel strap or nickel alloy strip 11 is 1-4.So be provided with, not only prevented to produce in the welding process spark, also make welded contact firmly stable, and can not damage pole piece.Other composition is identical with embodiment one with annexation.
Embodiment three: in conjunction with Fig. 4 present embodiment is described, the thickness of the aluminium strip of present embodiment or aluminum alloy strip 10 is 0.1mm-1.5mm, and the thickness of nickel strap or nickel alloy strip 11 is 0.1mm-1.5mm.So be provided with, effectively prevented to produce spark in the welding process, avoided because the short circuit that welding causes, and improved the circulation of battery and the chemical property that multiplying power charges and discharge attached to the aluminium strip on the lug group or aluminum alloy strip 10 and nickel strap or nickel alloy strip 11.Other composition is identical with embodiment one or two with annexation.
Embodiment four: present embodiment is described in conjunction with Fig. 4, present embodiment sees through aluminium strip or aluminum alloy strip 10 is one with electric core anode ear group 8 with loam cake positive strap 1-2 laser welding, and the quantity of solder joint is 5 point-300 points, seeing through nickel strap or nickel alloy strip 11 is one with electric core negative electrode lug group 9 with loam cake negative pole brace 1-3 laser welding, and the quantity of solder joint is 5 point-300 points.So be provided with, pad is firmly stable more.Other composition is identical with embodiment one, two or three with annexation.
Claims (3)
1. the low internal resistance Li-ion electrokinetic cell lug of an anti-short circuit, it comprises loam cake (1), lower casing (2), N anode ear (3), N+1 negative electrode lug (4), N positive plate (5), N+1 negative plate (6) and a plurality of barrier film (7), loam cake (1) comprises upper casing (1-1), loam cake positive strap (1-2), loam cake negative pole brace (1-3), positive pole draws post (1-4) and negative pole draws post (1-5), the upper surface of upper casing (1-1) is provided with that positive pole draws post (1-4) and negative pole draws post (1-5), the lower surface of upper casing (1-1) is provided with loam cake positive strap (1-2) and loam cake negative pole brace (1-3), and positive pole draws post (1-4) and the corresponding up and down setting of loam cake positive strap (1-2), negative pole draws post (1-5) and the corresponding up and down setting of loam cake negative pole brace (1-3), N+1 negative plate (6) stacks at interval with N positive plate (5), isolate by a barrier film (7) between N+1 negative plate (6) and N the positive plate (5), the upper end of each positive plate (5) is connected with an anode ear (3), the upper end of each negative plate (6) is connected with a negative electrode lug (4), N anode ear (3) is welded to form electric core anode ear group (8), N+1 negative electrode lug (4) is welded to form electric core negative electrode lug group (9), it is a closure casing that loam cake (1) fastens with lower casing (2), electricity core anode ear group (8), electricity core negative electrode lug group (9), N positive plate (5), N+1 negative plate (6) and a plurality of barrier film (7) all place the inside of described closure casing, it is characterized in that: a kind of low internal resistance Li-ion electrokinetic cell lug of anti-short circuit also comprises at least one aluminium strip or aluminum alloy strip (10) and at least one nickel strap or nickel alloy strip (11), electricity core anode ear group (8) is riveted together with loam cake positive strap (1-2), electricity core negative electrode lug group (9) is riveted together with loam cake negative pole brace (1-3), at least attach an aluminium strip or aluminum alloy strip (10) on the electricity core anode ear group (8), seeing through aluminium strip or aluminum alloy strip (10) is one with electric core anode ear group (8) with loam cake positive strap (1-2) laser welding, at least attach a nickel strap or nickel alloy strip (11) on the electricity core negative electrode lug group (9), seeing through nickel strap or nickel alloy strip (11) is one with electric core negative electrode lug group (9) with loam cake negative pole brace (1-3) laser welding, and the value of N is the natural number of 4-160.
2. the low internal resistance Li-ion electrokinetic cell lug of a kind of anti-short circuit according to claim 1 is characterized in that: the quantity of aluminium strip or aluminum alloy strip (10) and nickel strap or nickel alloy strip (11) is 1--4.
3. the low internal resistance Li-ion electrokinetic cell lug of a kind of anti-short circuit according to claim 1 and 2, it is characterized in that: the thickness of aluminium strip or aluminum alloy strip (10) is 0.1mm-1.5mm, the thickness of nickel strap or nickel alloy strip (11) is 0.1mm-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200165519U CN201910457U (en) | 2011-01-19 | 2011-01-19 | Short-circuit-preventive low-internal-resistance lithium ion power battery tab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200165519U CN201910457U (en) | 2011-01-19 | 2011-01-19 | Short-circuit-preventive low-internal-resistance lithium ion power battery tab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201910457U true CN201910457U (en) | 2011-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200165519U Expired - Lifetime CN201910457U (en) | 2011-01-19 | 2011-01-19 | Short-circuit-preventive low-internal-resistance lithium ion power battery tab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201910457U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737867A (en) * | 2018-11-22 | 2019-05-10 | 合肥国轩高科动力能源有限公司 | A method of observation battery core internal structure |
| CN113644389A (en) * | 2020-04-27 | 2021-11-12 | 北京小米移动软件有限公司 | Battery module and manufacturing method thereof |
-
2011
- 2011-01-19 CN CN2011200165519U patent/CN201910457U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737867A (en) * | 2018-11-22 | 2019-05-10 | 合肥国轩高科动力能源有限公司 | A method of observation battery core internal structure |
| CN113644389A (en) * | 2020-04-27 | 2021-11-12 | 北京小米移动软件有限公司 | Battery module and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |