CN203367400U - Layout structure of tab and pole piece of high-rate battery - Google Patents
Layout structure of tab and pole piece of high-rate battery Download PDFInfo
- Publication number
- CN203367400U CN203367400U CN2013203166921U CN201320316692U CN203367400U CN 203367400 U CN203367400 U CN 203367400U CN 2013203166921 U CN2013203166921 U CN 2013203166921U CN 201320316692 U CN201320316692 U CN 201320316692U CN 203367400 U CN203367400 U CN 203367400U
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- CN
- China
- Prior art keywords
- pole piece
- battery
- lug
- tab
- collector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a layout structure of a tab and a pole piece of a high-rate battery. The layout structure comprises a pole piece, a tab and a current collector, wherein the pole piece and the current collector are fixedly connected; the current collector is fixedly connected with the tab; the length of the connecting part of the tab and the current collector is equal to the widths of the current collector and the pole piece. As the connecting length and width of the tab and the current collector are increased, the connecting area between the tab and the current collector is enlarged, so that when the battery is circulated, the tab bears a relatively small current density in unit area, the polarization of the tab is relatively small, heat production of the battery is effectively reduced, accordingly, the pole piece of the battery is protected; the service life of the battery is prolonged and the capacity of the battery is kept stable.
Description
Technical field
The utility model relates to technical field of lithium ion, is specifically related to a kind of lug of high-multiplying-power battery and the arrangement of pole piece.
Technical background
As rechargeable lithium ion batteries of new generation, lithium ion battery has high voltage, and long circulation life, high the reaching with advantages of environment protection of energy density receive more concern.Increasing electronic equipment is abandoned lead-acid battery and is used lithium ion battery instead as its power supply.Along with the lifting that power consumption equipment requires lithium ion battery, lithium ion battery is towards high-energy-density and the development of high magnification both direction, and this ability of afflux to lug is also had higher requirement.Lug is the carrier that battery and outside energy are transmitted.During the battery charging, outside energy is transferred to pole piece by lug, forces positive and negative electrode generation electrochemical reaction, thereby is chemical energy by electric energy conversion, and vice versa.Along with the increase of current density, near lug, the polarization of pole piece becomes large.Along with the increase of electric current, the battery heat production increases simultaneously, and temperature raises, and these two aspects all cause the battery pole piece damage, cause battery performance to fail in advance.Battery shows as low the appearance, and power consumption equipment shows as stand-by time and shortens.
The utility model content
The utility model is exactly for above-mentioned technical problem, and a kind of lug of high-multiplying-power battery and the arrangement of pole piece are provided.This structure can effectively be controlled current density, and the protection battery pole piece, improve the battery serviceability.
For realizing this purpose, the lug of the high-multiplying-power battery that the utility model is designed and the arrangement of pole piece, comprise pole piece, lug and collector, pole piece is fixedly connected with collector, be fixedly connected with lug on collector, it is characterized in that: the length of described lug and the connecting portion of collector is identical with the width of collector and pole piece.
Further, the length direction of described lug is vertical with the length direction of collector and pole piece.
Further, the width of described lug is no more than the length of collector.
The beneficial effects of the utility model are: by increasing connecting length and the width of lug and collector; increased the connection area of lug and collector; when circulating battery; the current density that lug bears on unit are is less; the lug polarization is also less; and the battery heat production effectively reduces, thereby protected battery pole piece.Extend battery, guaranteed the stable of battery capacity.
The accompanying drawing explanation
Fig. 1 is the designed structural representation of lug integral solder on collector of the utility model;
Fig. 2 is the designed structural representation of lug multi-point welding on collector of the utility model;
The structural representation of lug integral solder on collector that Fig. 3 is wider width in the utility model;
The structural representation of lug multi-point welding on collector that Fig. 4 is wider width in the utility model;
Wherein, 1-pole piece, 2-lug, 3-collector.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is done further and is described in detail:
The lug of the high-multiplying-power battery as shown in Fig. 1～2 and the arrangement of pole piece, comprise pole piece 1, lug 2 and collector 3, pole piece 1 is fixedly connected with collector 3, be fixedly connected with lug 2 on collector 3, the length of described lug 2 and the connecting portion of collector 3 is identical with the width of collector 3 and pole piece 1.Wherein, the length direction that the axial direction of lug 2 is lug 2, the length direction that is pole piece 1 and collector 3 perpendicular to the direction of lug 2 length.
Due to one of an end of lug 2 and collector 3, hold level with both hands together, the other end is positioned at the outside of collector 3, in the situation that the width of lug 2 is constant, but has effectively increased the connection area of lug 2, has reduced current density.
In technique scheme, the length direction of described lug 2 is vertical with the length direction of pole piece 1 with collector 3.
In technique scheme, as shown in Fig. 3～4, the width of described lug 2 is no more than the length of collector 3.In the utility model, lug 2 is welded in the two-sided blank space of collector 3; the width of lug 2 is no more than the width of two-sided blank space; therefore in the situation that the length of lug 2 is constant; rationally increased the width of lug 2; guarantee to connect effect simultaneously; but further increased the connection area of lug 2, thereby reached the reduction current density, the purpose of protection pole piece 1.
The course of work of the present utility model is: as shown in Fig. 1～2, during the battery charging, electric current is by lug 2, then flow into collector 3, then pass through lug 2, when electric current process lug 2, due to one of an end of lug 2 and collector 3, hold level with both hands together, the other end is positioned at outside collector 3.Lug 2 obviously increases with the connection area of collector 3, and, because lug 2 and the connection area of collector 3 increase, when battery charges, the current density of lug 2 on unit are obviously reduces, thereby reduced the polarization of pole piece 1, also reduced the heat production of battery.Otherwise, when battery discharge, also less by the current density of pole piece 1, thus pole piece 1 effectively protected, extended the useful life of battery.As shown in Fig. 3～4, one of an end of lug 2 and collector 3 held level with both hands together, and the other end is positioned at outside collector 3.Be no more than at width under the condition of length of collector 3, effectively increased the width of lug 2.During the battery charging, the current density of lug 2 on unit are obviously reduces, thereby reduced the polarization of pole piece 1, also reduced the heat production of battery.Otherwise, when battery discharge, also less by the current density of pole piece 1, thus pole piece 1 effectively protected, extended the useful life of battery.
The above; it is only embodiment of the present utility model; but protection range of the present utility model is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the utility model; the variation that can expect easily or replacement, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range that claims were limited.
Claims (3)
1. the arrangement of the lug of a high-multiplying-power battery and pole piece, comprise pole piece (1), lug (2) and collector (3), pole piece (1) is fixedly connected with collector (3), be fixedly connected with lug (2) on collector (3), it is characterized in that: the length of described lug (2) and the connecting portion of collector (3) is identical with the width of collector (3) and pole piece (1).
2. the arrangement of the lug of a kind of high-multiplying-power battery as claimed in claim 1 and pole piece, it is characterized in that: the length direction of described lug (2) is vertical with the length direction of pole piece (1) with collector (3).
3. the arrangement of the lug of a kind of high-multiplying-power battery as claimed in claim 1 or 2 and pole piece, it is characterized in that: the width of described lug (2) is no more than the length of collector (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203166921U CN203367400U (en) | 2013-06-03 | 2013-06-03 | Layout structure of tab and pole piece of high-rate battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203166921U CN203367400U (en) | 2013-06-03 | 2013-06-03 | Layout structure of tab and pole piece of high-rate battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203367400U true CN203367400U (en) | 2013-12-25 |
Family
ID=49815120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203166921U Expired - Lifetime CN203367400U (en) | 2013-06-03 | 2013-06-03 | Layout structure of tab and pole piece of high-rate battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203367400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117424A (en) * | 2019-06-21 | 2020-12-22 | 比亚迪股份有限公司 | Single battery, power battery pack and vehicle |
-
2013
- 2013-06-03 CN CN2013203166921U patent/CN203367400U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117424A (en) * | 2019-06-21 | 2020-12-22 | 比亚迪股份有限公司 | Single battery, power battery pack and vehicle |
| CN112117424B (en) * | 2019-06-21 | 2022-02-08 | 比亚迪股份有限公司 | Single battery, power battery pack and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Layout structure of tab and pole piece of high-rate battery Effective date of registration: 20151014 Granted publication date: 20131225 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: Wuhan Lixing (Torch) Power Sources Co.,Ltd. Registration number: 2015420000019 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20171013 Granted publication date: 20131225 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: Wuhan Lixing (Torch) Power Sources Co.,Ltd. Registration number: 2015420000019 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |
|
| CX01 | Expiry of patent term |