CN202058822U - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN202058822U CN202058822U CN2011201693894U CN201120169389U CN202058822U CN 202058822 U CN202058822 U CN 202058822U CN 2011201693894 U CN2011201693894 U CN 2011201693894U CN 201120169389 U CN201120169389 U CN 201120169389U CN 202058822 U CN202058822 U CN 202058822U
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- negative
- positive
- lithium ion
- ion battery
- pole
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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 relates to a lithium ion battery, which is provided with two kinds of taps. The lithium ion battery comprises a casing, a pole core and electrolyte, the pole core and the electrolyte are sealed in the casing, the casing is provided with a positive pole and a negative pole, the pole core comprises a plurality of positive pole sheets and a plurality of negative sheets which are laminated in a staggered manner, diaphragms are arranged between adjacent positive sheets and negative sheets, each positive sheet is provided with at least two positive taps, each negative sheet is provided with at least two negative taps, the positive taps on all the positive sheets at corresponding positions are welded to form at least two positive tap groups, one of the positive tap groups is connected with the positive pole on the casing, the negative taps on all the negative sheets at corresponding positions are welded to form at least two negative tap groups, and one of the two negative tap groups is connected with the negative pole on the casing. The lithium ion battery has the advantages that danger of explosion is reduced, safety thereof is improved and the lithium ion battery is suitable for popularization and utilization.
Description
Technical field
The utility model relates to a kind of battery, particularly relates to a kind of lithium ion battery that is used for electric automobile.
Background technology
Serious day by day along with the energy crisis in the global range and problem of environmental pollution, the new forms of energy of seeking green sustainable development have become the main developing direction of energy field.Electric automobile is developed rapidly as a kind of new forms of energy vehicles of energy-conserving and environment-protective, lithium ion battery because of have the energy density height, have extended cycle life, advantage such as green non-pollution, make it become one of electrical source of power that gets most of the attention.
But the fail safe of high capacity lithium ion battery is one of subject matter of its development of restriction always, and under abuse conditions, under situations such as high temperature, internal short-circuit, extruding, vibration, battery can be smoldered, catches fire even be exploded, and brings potential safety hazard to the user.Therefore the fail safe that improves lithium ion battery is one of focus of electrokinetic cell research always.
Chinese patent notification number CN101651194A, a kind of lithium ion battery is disclosed, described lithium ion battery comprises shell and electrode assemblie, described electrode assemblie comprises positive plate, negative plate and be arranged on positive plate, barrier film between negative plate also is arranged in the described shell, described positive plate and negative plate are equipped with dressing district and dressing district not, the not dressing district of described positive plate and negative plate forms anode ear and negative electrode lug, wherein said lithium ion battery also comprises positive electrode terminal, negative electrode terminal and cover plate, described positive electrode terminal and negative electrode terminal are made one with described cover plate respectively, and an end of described positive electrode terminal and negative electrode terminal passes described cover plate and leads in the described battery and be connected with negative electrode lug with described anode ear respectively.
Chinese patent publication number CN1858932A, a kind of lithium ion battery is disclosed, comprise electric core, the electricity core comprises electric core housing, main pole sheet body unit and at least one are from the pole piece body unit, main pole lamellar body unit comprises septate anode pole piece of therebetween and cathode pole piece, draw positive pole ear and negative lug respectively from anode pole piece and cathode pole piece, draw respectively with cathode pole piece from anode pole piece in addition and be connected conducting strip, each comprises septate anode pole piece of therebetween and cathode pole piece from the pole piece body unit, draws respectively from anode pole piece and cathode pole piece to be connected conducting strip and main pole sheet body unit or the adjacent conducting strip that is connected from the pole piece body unit is connected.
Chinese patent notification number CN2849999Y, a kind of lithium ion battery is disclosed, comprise housing, and be sealed in pole piece body and electrolyte in the housing, the pole piece body comprises the little pole piece that two or more coilings form, the positive and negative electrode lug of each little pole piece can be electrically connected with the positive and negative electrode of battery respectively by the mode of distribution electric welding, can also adopt the lug of broad.
Above-mentioned lithium ion battery, when situations such as battery appearance extruding, internal short-circuit, huge thermal discharge still can cause potential safety hazards such as battery catches fire, blast.
Summary of the invention
The purpose of this utility model is to provide a kind of two kinds of lugs that have, and a kind of lug is used for water conservancy diversion, and another kind of lug is used for the lithium ion battery of heat conduction, the problem of poor stability when solving the lithium ion battery generation internal short-circuit that exists in the background technology.
To achieve these goals, the technical solution of the utility model is: a kind of lithium ion battery, comprise housing and be sealed in described housing interior pole piece body and electrolyte, described housing is provided with positive pole and negative pole, described pole piece body comprises positive plate and the negative plate that several are alternately laminated, between adjacent described positive plate and negative plate, be provided with barrier film, have at least two anode ears on the described positive plate, have at least two negative electrode lugs on the described negative plate, the position of the anode ear on the position of the negative electrode lug on the described negative plate and the positive plate is not corresponding, the anode ear of the position correspondence on all positive plates is welded together to form at least two anode ear groups, and one of them anode ear group is drawn the positive pole that is connected on the housing, the negative electrode lug of the position correspondence on all negative plates is welded together to form at least two negative electrode lug groups, and one of them negative electrode lug group is drawn the negative pole that is connected on the housing.The anode ear group and the negative electrode lug group that are not drawn out to positive and negative electrode are referred to as water conservancy diversion lug group, when lithium ion battery generation internal short-circuit, liberated heat can be uniformly distributed on the pole piece body by water conservancy diversion lug group in short time, thereby reduced the risk of blast, the fail safe that has improved lithium ion battery.
The beneficial effect of the utility model lithium ion battery is: when lithium ion battery generation internal short-circuit, liberated heat can be uniformly distributed in by the lug group that welds together on the pole piece body in short time, thereby reduced the risk of blast, the fail safe that has improved lithium ion battery.
Description of drawings
Fig. 1 is the structural representation of the positive plate of lithium ion battery among the embodiment 1;
Fig. 2 is the structural representation of the negative plate of lithium ion battery among the embodiment 1;
Fig. 3 is the schematic diagram that the pole piece body decomposes shape among the embodiment 1;
Fig. 4 is the front view of pole piece body among the embodiment 1;
Fig. 5 is the structural representation of the positive plate of lithium ion battery among the embodiment 2;
Fig. 6 is the structural representation of the negative plate of lithium ion battery among the embodiment 2;
Fig. 7 is the front view of pole piece body among the embodiment 2;
Fig. 8 is the structural representation of the positive plate of lithium ion battery among the embodiment 3;
Fig. 9 is the structural representation of the negative plate of lithium ion battery among the embodiment 3;
Figure 10 is the front view of pole piece body among the embodiment 3;
Figure 11 is the structural representation of the positive plate of lithium ion battery among the embodiment 4;
Figure 12 is the structural representation of the negative plate of lithium ion battery among the embodiment 4;
Figure 13 is the front view of pole piece body among the embodiment 4;
Figure 14 is the structural representation of the positive plate of lithium ion battery among the embodiment 5;
Figure 15 is the structural representation of the negative plate of lithium ion battery among the embodiment 5;
Figure 16 is the front view of pole piece body among the embodiment 5.
Number in the figure is respectively: 1 positive plate, 11. anode ears, 2. negative plates, 21. negative electrode lugs, 3. barrier films.
Embodiment
Also in conjunction with the accompanying drawings the technical solution of the utility model is further described specifically below by embodiment.
Embodiment 1:
A kind of lithium ion battery, comprise housing, this housing comprises the housing of various size battery in the prior art, select for use according to actual needs, described housing is provided with positive pole and negative pole, be packaged with pole piece body and electrolyte in this housing, described pole piece body comprises several alternately laminated positive plates 1 and negative plate 2, as Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, between adjacent described positive plate 1 and negative plate 2, be provided with barrier film 3, can be used as positive plate 1, it is known that the material of negative plate 2 and barrier film 3 is present technique field personnel, on positive plate 1, have two anode ears 11, these two anode ears 11 are positioned at the oblique offside on positive plate 1 both sides, have two negative electrode lugs 21 on the described negative plate 2, the position of the anode ear 11 on the position of these two negative electrode lugs 21 and the positive plate 1 is not corresponding, the anode ear 11 of the position correspondence on all positive plates 1 is welded together to form two anode ear groups, and one of them anode ear group is drawn the positive pole that is connected on the housing, the negative electrode lug 21 of the position correspondence on all negative plates 2 is welded together to form two negative electrode lug groups, and one of them negative electrode lug group is drawn the negative pole that is connected on the housing.The anode ear group and the negative electrode lug group that are not drawn out to the housing positive and negative electrode mainly are to play the effect of water conservancy diversion, so we are referred to as water conservancy diversion lug group.
Embodiment 2:
A kind of lithium ion battery, the difference of itself and embodiment 1 is: two anode ears 11 of positive plate 1 are positioned at the opposite side on positive plate 1 both sides, two negative electrode lugs 21 of negative plate 2 are positioned at the opposite side on negative plate 2 both sides, and anode ear 11 is not corresponding with the position of negative electrode lug 21, as shown in Figure 5 and Figure 6, the front view of the pole piece body of forming thus as shown in Figure 7.
Embodiment 3:
A kind of lithium ion battery, the difference of itself and embodiment 1 is: two anode ears 11 of positive plate 1 are positioned at the adjacent both sides of positive plate 1, two negative electrode lugs 21 of negative plate 2 are positioned at the adjacent both sides of negative plate 2, and anode ear 11 is not corresponding with the position of negative electrode lug 21, as Fig. 8 and shown in Figure 9, thus the front view of the pole piece body of Zu Chenging as shown in figure 10, anode ear 11 is staggered non-conterminous with negative electrode lug 21.
Embodiment 4:
A kind of lithium ion battery, the difference of itself and embodiment 3 is: two anode ears 11 are adjacent in the pole piece body that positive plate 1 and negative plate 2 are formed, and two negative electrode lugs 21 are adjacent, and anode ear 11 is staggered with negative electrode lug 21, as Figure 11, Figure 12 and shown in Figure 13.
Embodiment 5:
A kind of lithium ion battery, the difference of itself and embodiment 3 is: as Figure 14, shown in Figure 15, anode ear 11 is positioned at the centre on the adjacent both sides of positive plate 1, and negative electrode lug 21 is positioned at the centre on the adjacent both sides of negative electrode lug 2, and the front view of the pole piece body of composition as shown in figure 16.
Respectively above-mentioned five kinds of embodiment are done following test:
Prepare the 100Ah lithium ion battery by embodiment 1 structure, carry out 5 polyphones and connect, with the high temperature resistant draw point of φ 5mm, with the speed of 12mm/s, pierce through battery from the direction perpendicular to battery, draw point is stayed in the battery, and battery is missing of ignition, do not explode.
Prepare the 100Ah lithium ion battery by embodiment 2 structures, carry out 5 polyphones and connect, with the high temperature resistant draw point of φ 5mm, with the speed of 12mm/s, pierce through battery from the direction perpendicular to battery, draw point is stayed in the battery, and battery is missing of ignition, do not explode.
Prepare the 100Ah lithium ion battery by embodiment 3 structures, carry out 5 polyphones and connect, with the high temperature resistant draw point of φ 5mm, with the speed of 12mm/s, pierce through battery from the direction perpendicular to battery, draw point is stayed in the battery, and battery is missing of ignition, do not explode.
Prepare the 100Ah lithium ion battery by embodiment 4 structures, carry out 5 polyphones and connect, with the high temperature resistant draw point of φ 5mm, with the speed of 12mm/s, pierce through battery from the direction perpendicular to battery, draw point is stayed in the battery, and battery is missing of ignition, do not explode.
Prepare the 100Ah lithium ion battery by embodiment 5 structures, carry out 5 polyphones and connect, with the high temperature resistant draw point of φ 5mm, with the speed of 12mm/s, pierce through battery from the direction perpendicular to battery, draw point is stayed in the battery, and battery is missing of ignition, do not explode.
Do not have water conservancy diversion lug group structure according to routine in addition and prepare the 100Ah lithium ion battery, carry out 5 polyphones and connect,, pierce through battery from direction perpendicular to battery with the high temperature resistant draw point of φ 5mm, with the speed of 12mm/s, draw point is stayed in the battery, and the situation of smoldering, catching fire appears in battery.
From above-mentioned test result as can be seen: lithium ion battery structure of the present utility model has reduced the risk of blast, the fail safe that has improved lithium ion battery.
Above-mentioned described specific embodiment only is that the preferable examples explanation is done in design of the present utility model.All any modifications of being made within spirit of the present utility model and principle or replenish or be equal to alternatively all should be included within the protection range of the utility model claim.
Claims (1)
1. lithium ion battery, comprise housing and be sealed in described housing interior pole piece body and electrolyte, described housing is provided with positive pole and negative pole, described pole piece body comprises several alternately laminated positive plates (1) and negative plate (2), between adjacent described positive plate (1) and negative plate (2), be provided with barrier film (3), it is characterized in that: have at least two anode ears (11) on the described positive plate (1), have at least two negative electrode lugs (21) on the described negative plate (2), the position of the anode ear (11) on the position of the negative electrode lug (21) on the described negative plate (2) and the positive plate (1) is not corresponding, the anode ear (11) of the position correspondence on all positive plates (1) is welded together to form at least two anode ear groups, and one of them anode ear group is drawn the positive pole that is connected on the housing, the negative electrode lug (21) of the position correspondence on all negative plates (2) is welded together to form at least two negative electrode lug groups, and one of them negative electrode lug group is drawn the negative pole that is connected on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201693894U CN202058822U (en) | 2011-05-25 | 2011-05-25 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201693894U CN202058822U (en) | 2011-05-25 | 2011-05-25 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202058822U true CN202058822U (en) | 2011-11-30 |
Family
ID=45018787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201693894U Expired - Fee Related CN202058822U (en) | 2011-05-25 | 2011-05-25 | Lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202058822U (en) |
-
2011
- 2011-05-25 CN CN2011201693894U patent/CN202058822U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20190525 |
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| CF01 | Termination of patent right due to non-payment of annual fee |