CN204905342U - Cylinder type lithium ion battery utmost point ear and lithium ion battery who uses this utmost point ear - Google Patents
Cylinder type lithium ion battery utmost point ear and lithium ion battery who uses this utmost point ear Download PDFInfo
- Publication number
- CN204905342U CN204905342U CN201520582514.2U CN201520582514U CN204905342U CN 204905342 U CN204905342 U CN 204905342U CN 201520582514 U CN201520582514 U CN 201520582514U CN 204905342 U CN204905342 U CN 204905342U
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- lithium ion
- ion battery
- connecting portion
- battery
- utmost point
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a cylinder type lithium ion battery utmost point ear and lithium ion battery who uses this utmost point ear, this utmost point ear include the body, the body including be used for with lithium ion battery shell or block welded mass flow portion with be used for with battery sheet welded connecting portion, connecting portion are curling along width direction, are arc tile column structure. The utility model discloses the connecting portion of utmost point ear curl into arc tile form, coil into electric core after battery sheet and the connecting portion welding, and connecting portion both can play the supporting role of electric core center tube, avoid electric core manufacture process and use in the centering subside, can play the effect of utmost point ear again, through with battery sheet welded fastening, formation electric current connection route. Welded fastening's mode has been avoided connecting portion friction diaphragm and has been leaded to unfamiliar damage to avoid the battery short circuit.
Description
Technical field
The utility model relates to cylindrical lithium ion battery technical field, particularly relates to a kind of cylindrical lithium ion battery lug and the lithium ion battery using this lug.
Background technology
Lithium ion battery is high due to energy density, and the advantage such as to have extended cycle life is widely used.The extensive application of lithium ion battery makes its fail safe more and more be paid attention to, especially in large-scale application, as fields such as electric bicycle, electric automobile, energy-accumulating power stations.In order to improve the fail safe of lithium ion battery, lithium ion battery, particularly cylindrical lithium ion battery has carried out many-sided improvement, effectively can increase the fail safe of battery as increased central tube (centrepin) in battery core.
Application number be 200510118419.8 patent document discloses a kind of column lithium ion battery and manufacture method thereof.Centrepin is easily inserted in the space within electrode assemblie and keeps on the inside of cylindrical tank and support it.Described column lithium ion battery comprises: electrode assemblie, is wound up as cylinder form, has the space that the heart wherein defines; Cylindrical tank, hold electrodes assembly and there is unlimited top; Centrepin, has little before insertion and becomes large to fill up the diameter in space after the insertion in the space being inserted into electrode assemblie; And cap assemblies, the top attaching to cylindrical tank departs to prevent electrode assemblie and centrepin from tank body.Centrepin to a certain degree adds the stable degree of electrode assemblie.But the centrepin increased also to a certain degree increases the friction between barrier film under battery Vibration Condition, adds the hidden danger of internal short-circuit of battery.
Application number be 200820074304.2 patent document discloses a kind of seamless central supporting pipe of cylindrical lithium ionic cell that can improve battery security, described central support tube is seamless hollow structure, its diameter is as the criterion can insert battery pole group switching centre hole, its length and battery pole group isometric or slightly short.This utility model can ensure that when inside battery is short-circuited battery pole group is not subsided to centre bore, makes the gas produced because of short circuit be discharged to battery cover CID place by central support tube, makes its open circuit and makes battery cover safety valve break further and pressure release.Central support tube to a certain degree increases the heat-sinking capability of heat in the middle of battery pole group.The diameter of central support tube is the parameter received much concern always in addition, and diameter is excessive, and insertion process may cause diaphragm failures, and diameter is too small, brings central tube stability problem.
Utility model content
The utility model provides the compound solution of a kind of cylindrical lithium ion battery lug and central tube, the part of this lug and battery pole piece welding stretches into battery core inside as central tube, to solve the problem that the independent mounting center pipe of existing lithium ion battery exists potential safety hazard.
Cylindrical lithium ion battery lug, comprises body, and described body comprises afflux portion for welding with casing of lithium ion battery or block a shot and for the connecting portion with battery pole piece welding, described connecting portion broad ways is curling, in arc tiles structure.
Arc tiles structure is curled into the connecting portion of battery pole piece welding, after battery pole piece winding, connecting portion can substitute original central tube, because connecting portion and battery pole piece welding are fixed, can solve conventional center pipe poor stability, the barrier film that causes rubbing is damaged and occur the problem of internal short-circuit of battery.
Have convergence part between described connecting portion and afflux portion, convergence part can make connecting portion and afflux portion without the need to point-blank, installs offer convenience to battery.
Preferred scheme, has folding line between described convergence part and afflux portion.When lithium ion battery is assembled, cylindrical lithium ion battery lug, along folds, is assembled easier.
The radian that described connecting portion is curling is 30 ° ~ 360 °, is more preferably 90 ° ~ 270 °.Curling radian is larger, the battery core more helping avoid winding is subsided to center, if but connecting portion is rolled into tubulose completely, even two imbricates of length direction, can be unfavorable for the flowing of electrolyte, and radian is selected at 90 ° ~ 270 °, both can ensure that connecting portion had enough support strengths as central tube, also its side can be allowed to have gap, and this gap can ensure that electrolyte fully flows, and enables battery core fully infiltrate electrolyte.This structure is easy to processing sizing simultaneously.
The utility model provides a kind of lithium ion battery, the battery core comprising shell, block and formed by battery pole piece, membrane winding, block is connected with positive and negative battery pole piece by lug with shell, and one of them lug is above-mentioned cylindrical lithium ion battery lug.This lug can be the positive pole ear be connected with positive battery pole piece, also can be the negative lug be connected with negative battery pole piece.This lithium ion battery does not have the central tube of traditional structure, and all the other structures are then identical.
The length of described connecting portion is 50% ~ 100% of battery pole piece width.If the length of connecting portion is less than 50% of electrode slice width, the confining force of battery core and to support be insufficient, and if be greater than 100%, the connection of afflux portion and casing of lithium ion battery or block can be unfavorable for.
Relative to prior art, the utility model possesses following advantage:
(1) connecting portion of the utility model lug is curled into arc tiles, battery core is wound into after battery pole piece welds with connecting portion, namely connecting portion can be used as central tube, battery core is avoided to subside to center, connecting portion and battery pole piece welding are fixed in addition, avoid connecting portion friction barrier film and cause barrier film damaged and then cause the problem of battery short circuit.
(2) the utility model lug can utilize Sheet Metal Forming Technology shaping, and punching press before battery assembling, also can be able to be in an assembling process, not affect the normal welding procedure of lug.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment 1 cylindrical lithium ion battery lug.
Fig. 2 is the schematic diagram of embodiment 2 cylindrical lithium ion battery lug.
Fig. 3 is the schematic diagram of embodiment 3 cylindrical lithium ion battery lug.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is further explained.
Embodiment 1
As shown in Figure 1, cylindrical lithium ion battery lug of the present utility model comprises afflux portion 1, convergence part 2, connecting portion 3.
Afflux portion 1 is flat construction, and during assembling, the part of confluxing with battery welds together.Connecting portion 3 broad ways is curling, and in arc tiles structure, curling radian is 120 °, during assembling, with battery pole piece welding together.Convergence part 2 is had between connecting portion 3 and afflux portion 1.There is between convergence part 2 and afflux portion 1 folding line 21.
Lug of the present utility model is by metal material (aluminium, copper, nickel etc.) punching press one-shot forming, and the length of connecting portion is 50% ~ 100% of battery pole piece width.During assembling, connecting portion is welded on one end of battery pole piece along battery pole piece width.Positive and negative electrode sheet, barrier film are placed in order, then is wound into battery core using the arc tile structure of positive pole ear or negative lug connecting portion as the volume heart, load cylindrical battery inner.
Cylindrical lithium ion battery generally comprises the battery core of box hat, block and inside, battery core is welded with positive and negative lug, and anode ear welding block, negative pole lug welding box hat, forms complete conductive path.As stated in the Background Art, conventional batteries is prevent the pole piece of battery core from subsiding to center, general meeting inserts central tube as support in inside, this kind of structure is due to relative motion between central tube and barrier film, in battery core use procedure, the friction that the activity of central tube produces can cause barrier film damaged, and there is the hidden danger of internal short-circuit of battery.
The utility model lug adopts structure described above, the connecting portion of lug and battery pole piece welding, and in arc tiles, cause battery core turn around shaping after, whole battery core can be supported using connecting portion as central tube, avoid battery core on the one hand to subside to center, solve the problem that central tube friction barrier film causes its breakage on the other hand.
Embodiment 2
As shown in Figure 2, the radian that the connecting portion of lug of the present utility model is curling be 180 ° of other parts with embodiment 1, assembling mode is with embodiment 1.
Embodiment 3
As shown in Figure 3, the radian that the connecting portion of lug of the present utility model is curling be 330 ° of other parts with embodiment 1, assembling mode is with embodiment 1.
Claims (7)
1. cylindrical lithium ion battery lug, comprise body, described body comprises afflux portion for welding with casing of lithium ion battery or block a shot and for the connecting portion with battery pole piece welding, it is characterized in that, described connecting portion broad ways is curling, in arc tiles structure.
2. cylindrical lithium ion battery lug as claimed in claim 1, is characterized in that there is convergence part between described connecting portion and afflux portion.
3. cylindrical lithium ion battery lug as claimed in claim 2, is characterized in that having folding line between described convergence part and afflux portion.
4. cylindrical lithium ion battery lug as claimed in claim 1, it is characterized in that, the radian that described connecting portion is curling is 30 ° ~ 360 °.
5. cylindrical lithium ion battery lug as claimed in claim 4, it is characterized in that, the radian that described connecting portion is curling is 90 ° ~ 270 °.
6. lithium ion battery, the battery core comprising shell, block and formed by battery pole piece, membrane winding, block is connected with positive and negative battery pole piece by lug with shell, it is characterized in that, one of them lug is the arbitrary described cylindrical lithium ion battery lug of claim 1-5.
7. lithium ion battery as claimed in claim 6, it is characterized in that, the length of described connecting portion is 50% ~ 100% of battery pole piece width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520582514.2U CN204905342U (en) | 2015-08-05 | 2015-08-05 | Cylinder type lithium ion battery utmost point ear and lithium ion battery who uses this utmost point ear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520582514.2U CN204905342U (en) | 2015-08-05 | 2015-08-05 | Cylinder type lithium ion battery utmost point ear and lithium ion battery who uses this utmost point ear |
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| Publication Number | Publication Date |
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| CN204905342U true CN204905342U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520582514.2U Active CN204905342U (en) | 2015-08-05 | 2015-08-05 | Cylinder type lithium ion battery utmost point ear and lithium ion battery who uses this utmost point ear |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165135A (en) * | 2019-05-30 | 2019-08-23 | 超威电源有限公司 | The side negative plate of a kind of battery and battery pinches tab method |
| CN111952680A (en) * | 2020-07-23 | 2020-11-17 | 安徽泰能新能源科技有限公司 | Cylindrical lithium ion battery roll core |
| CN112335116A (en) * | 2018-10-24 | 2021-02-05 | 株式会社东芝 | Battery and battery pack |
| CN112467187A (en) * | 2020-11-10 | 2021-03-09 | 深圳市诚捷智能装备股份有限公司 | Winding battery cell manufacturing method and winding battery cell |
| CN115513402A (en) * | 2022-10-28 | 2022-12-23 | 厦门海辰储能科技股份有限公司 | Electrode assembly, single battery, battery module and preparation method of electrode assembly |
-
2015
- 2015-08-05 CN CN201520582514.2U patent/CN204905342U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112335116A (en) * | 2018-10-24 | 2021-02-05 | 株式会社东芝 | Battery and battery pack |
| CN112335116B (en) * | 2018-10-24 | 2022-11-25 | 株式会社东芝 | Battery and battery pack |
| CN110165135A (en) * | 2019-05-30 | 2019-08-23 | 超威电源有限公司 | The side negative plate of a kind of battery and battery pinches tab method |
| CN111952680A (en) * | 2020-07-23 | 2020-11-17 | 安徽泰能新能源科技有限公司 | Cylindrical lithium ion battery roll core |
| CN112467187A (en) * | 2020-11-10 | 2021-03-09 | 深圳市诚捷智能装备股份有限公司 | Winding battery cell manufacturing method and winding battery cell |
| CN115513402A (en) * | 2022-10-28 | 2022-12-23 | 厦门海辰储能科技股份有限公司 | Electrode assembly, single battery, battery module and preparation method of electrode assembly |
| CN115513402B (en) * | 2022-10-28 | 2023-12-29 | 厦门海辰储能科技股份有限公司 | Electrode assembly, single battery, battery module and preparation method of electrode assembly |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 313100 Meishan Industrial Park, Changxing County, Huzhou City, Zhejiang Province Patentee after: Tianneng Battery Group Co., Ltd. Address before: 313100 Meishan Industrial Park, Changxing County, Huzhou City, Zhejiang Province Patentee before: Tianneng Battery Group Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |