CN112803126A - Square metal shell lithium ion battery pack - Google Patents
Square metal shell lithium ion battery pack Download PDFInfo
- Publication number
- CN112803126A CN112803126A CN202011624957.5A CN202011624957A CN112803126A CN 112803126 A CN112803126 A CN 112803126A CN 202011624957 A CN202011624957 A CN 202011624957A CN 112803126 A CN112803126 A CN 112803126A
- Authority
- CN
- China
- Prior art keywords
- connector
- lithium ion
- ion battery
- square metal
- metal shell
- 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.)
- Pending
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 16
- 239000002184 metal Substances 0.000 title claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000001125 extrusion Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000008961 swelling Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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 invention is suitable for the technical field of lithium ion batteries, and provides a square metal shell lithium ion battery pack which comprises a plurality of single batteries, wherein the invention sets the pole of each single battery into a spherical groove structure, and sets a connector on a connecting belt for connecting adjacent single batteries into a spherical structure; the connector is rotationally connected with the connecting belt and can freely rotate when vibration, battery swelling or external force extrusion and the like occur, and the conductive effect is not influenced; when the connector is installed, the connector is clamped into the pole, so that the production efficiency is improved, the connector is easier to lift out during maintenance, and the system maintenance is facilitated; when the connector is twisted off under the action of external force, the connector is connected with the groove of the pole in a clamping manner, so that the connector is convenient to take out, and the electric core is prevented from being scrapped; compare in square block structure's utmost point post, under the prerequisite of using the same material, can reduce the total weight of utmost point post, reduce the material and use.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a square metal shell lithium ion battery pack.
Background
The square metal shell lithium ion battery and the pole of the module thereof are usually connected with other monomers through an internal thread or an external thread and a screw or a nut, so that the connection is loosened and the contact resistance is increased to cause potential safety hazards due to the influences of vibration, battery bulging or external force extrusion and the like in the use process.
The threaded connection mode usually judges the connection effect according to the same torque, but due to the thread machining precision, the difference in the connection effect is easy to occur, and the contact resistance distribution is inconsistent; the screw cap and the tab base are usually designed in a square shape, and four corners do not contribute to flow guiding, but increase the weight of the battery and the use amount of materials; the contact area of the threaded connection mode is only the inner ring and the upper surface and the lower surface, the contact area is difficult to further increase, the contact area is easy to twist off under the action of external force, and particularly, the threaded connection mode causes the battery to be scrapped once a screw is broken in a pole. In addition, the threaded connection requires a long operation time to achieve the set torque, requiring expensive torque detection equipment to be fitted.
Patent "a high power charge-discharge electrode post of large capacity lithium ion battery" that application number is CN201721221501.8 discloses that the circumferencial direction along the extension post is from interior to exterior is equipped with connecting plate and gasket in proper order, and the bolt runs through extension post, connecting plate and gasket respectively along the length direction of extension post, and the one end of bolt is equipped with the nut, and this technical scheme can improve heavy current discharge capacity, but has above-mentioned bolted connection's hidden danger equally.
Patent "a novel lithium ion battery of large capacity" of application number CN201520318557.X discloses all be equipped with the through-hole that is used for passing the bolt on the upper end of drainage piece and the utmost point ear, through bolt and nut fixed connection between the upper end of drainage piece and the utmost point ear, and this technical scheme also exists the hidden danger that the bolt vibration pine takes off.
Patent "bolt lithium ion battery" with application number CN201120004084.8 adopts and is connected positive pole, negative pole respectively with positive pole bolt terminal and the negative pole bolt terminal installed on the encapsulation end cover, and this technical scheme also has the hidden danger that the bolt vibration pine takes off.
Disclosure of Invention
The invention provides a square metal shell lithium ion battery pack, and aims to solve the technical problems.
The invention is realized in such a way that the square metal shell lithium ion battery pack comprises a plurality of single batteries, the pole of each single battery is of a spherical groove structure, the single batteries are connected through a connecting belt, two ends of the connecting belt are rotatably connected with connectors, each connector is of a spherical structure, and the spherical structures of the connectors are clamped with the spherical groove structures of the pole.
Furthermore, the spherical groove structure is formed by splicing two hemispherical sheets, and the bottom ends of the two hemispherical sheets are connected with a base.
Furthermore, the connector comprises a rotating part, a connecting part and a spherical head part which are connected in sequence, and the rotating part is connected with the connecting belt in a horizontal rotating mode.
Further, the connecting band is including a plurality of arc buffering portions and two plane connecting portions that connect gradually, the arc buffering portion is made by flexible braid over braid, and is a plurality of the both ends of arc buffering portion are connected plane connecting portion, the connector with plane connecting portion's bottom surface is rotated and is connected.
Further, the diameter of connector is slightly greater than the internal diameter of utmost point post, the connector with utmost point post interference fit joint.
Still further, the connecting band and the connecting head are made of copper, aluminum or an alloy thereof, and the pole is made of copper or an alloy thereof.
Advantageous effects
The square metal shell lithium ion battery pack provided by the invention has the advantages that the polar columns of the single batteries are arranged into the spherical groove structures, the connectors on the connecting belts for connecting the adjacent single batteries are arranged into the spherical structures, and the polar columns of the spherical groove structures are clamped with the spherical structures of the connectors, so that the contact area can be effectively increased, and the contact resistance can be effectively reduced; the connector is rotationally connected with the connecting belt, and can freely rotate in the same plane for 360 degrees when vibration, battery swelling or external force extrusion and the like occur, so that the conductive effect is not influenced; when the terminal is installed, the connector is only needed to be clamped into the spherical groove of the terminal, so that the production efficiency can be effectively improved, the terminal is easier to lift and pull out during maintenance, and the system is convenient to maintain; when the connector with the spherical structure is screwed off under the action of external force, the connector can be taken out by a tool because the connector is connected with the groove of the pole in a clamping manner, so that the electric core is prevented from being scrapped; compare in square block structure's utmost point post, under the prerequisite of using the same material, can reduce the total weight of utmost point post, reduce the material and use.
Drawings
Fig. 1 is a schematic structural diagram of a single battery provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pole provided in an embodiment of the present invention;
FIG. 3 is a perspective view of an interface tape provided by an embodiment of the present invention;
FIG. 4 is a front view of a connector strip provided by an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a connecting head according to an embodiment of the present invention;
fig. 6 is a schematic diagram of the fitting of the connector and the terminal provided in the embodiment of the present invention.
The reference numbers in the figures denote: 1-cell, 2-pole, 201-hemispherical sheet, 202-base, 3-connecting strip, 301-arc buffer portion, 302-plane connecting portion, 4-connecting head, 401-rotating portion, 402-connecting portion, 403-spherical head portion.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 6, an embodiment of the invention provides a square metal-casing lithium ion battery pack, which includes a plurality of single batteries 1.
In one embodiment of the present invention, the electrode posts 2 of the single batteries 1 are arranged in a spherical groove structure, the spherical groove structure is formed by splicing two hemispherical sheets 201, and the bottom ends of the two hemispherical sheets 201 are connected with a base 202.
A plurality of battery cells 1 are connected through a connecting band 3, and 3 both ends of connecting band are rotated and are connected with connector 4, and connector 4 has spherical structure, and the spherical structure of connector 4 and the spherical groove structure joint of utmost point post 2.
The connection of the plurality of unit batteries 1 is achieved by the connection band 3, and in one embodiment of the present invention, the connection band 3 includes a plurality of arc-shaped buffer parts 301 and two plane connection parts 302 connected in sequence, the arc-shaped buffer parts 301 are made of flexible braided bands, and both ends of the plurality of arc-shaped buffer parts 301 are connected to the plane connection parts 302.
The connector 4 is connected with the bottom surface rotation of plane connecting portion 302, and arc buffer 301 can eliminate the influence that the vibration is connected to battery cell 1, avoids the junction not hard up.
In one embodiment of the present invention, the connection head 4 includes a rotation portion 401, a connection portion 402 and a spherical head portion 403 connected in sequence, and the rotation portion 401 is horizontally and rotatably connected with the connection belt 3.
In an embodiment of the present invention, in order to further improve the connection stability between the connector 4 and the post 2, the diameter of the connector 4 is slightly larger than the inner diameter of the post 2, the connector 4 is clamped with the post 2 in an interference fit manner, for example, the outer diameter of the connector 4 is set to 8mm, the inner diameter of the spherical groove of the post 2 is set to 7mm, the post 2 adopts the structure of the two hemispherical sheets 201, when the connector 4 is clamped into the spherical groove, the spherical groove is elastically deformed to be separated by a small distance under the action of an external force, after the connector 4 is clamped into the spherical groove, the two hemispherical sheets 201 recover to a closed state, so as to realize the interference fit between the connector 4 and the post 2, further, the connecting band 3 and the connector 4 are made of copper, aluminum or an alloy thereof, and the post 2 is made of copper or an alloy thereof.
In addition, when the square metal shell lithium ion battery pack provided by the embodiment of the invention is installed, only the connector 4 needs to be clamped into the spherical groove of the pole 2, so that the production efficiency can be effectively improved, the square metal shell lithium ion battery pack can be more easily lifted out during maintenance, and the system maintenance is facilitated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a square metal casing lithium ion battery group, includes a plurality of battery cells, its characterized in that, battery cell's utmost point post is spherical groove structure, and is a plurality of battery cell connects through a connecting band, the connecting band both ends are rotated and are connected with the connector, the connector has spherical structure, the spherical structure of connector with the spherical groove structure joint of utmost point post.
2. The square metal shell lithium ion battery pack according to claim 1, wherein the spherical groove structure is formed by splicing two hemispherical sheets, and a base is connected to the bottom ends of the two hemispherical sheets.
3. The lithium ion battery pack with a square metal shell according to claim 1, wherein the connector comprises a rotating part, a connecting part and a spherical head part which are sequentially connected, and the rotating part is horizontally and rotatably connected with the connecting belt.
4. The lithium ion battery pack with a square metal shell according to claim 1, wherein the connecting band comprises a plurality of arc-shaped buffering parts and two plane connecting parts which are sequentially connected, the arc-shaped buffering parts are made of flexible woven belts, two ends of the arc-shaped buffering parts are connected with the plane connecting parts, and the connecting head is rotatably connected with the bottom surfaces of the plane connecting parts.
5. The lithium ion battery pack with a square metal shell according to claim 2, wherein the diameter of the connector is slightly larger than the inner diameter of the pole, and the connector is clamped with the pole in an interference fit manner.
6. The square metal shell lithium ion battery pack according to any one of claims 1 to 5, wherein the connecting band and the connecting head are made of copper, aluminum or an alloy thereof, and the pole is made of copper or an alloy thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011624957.5A CN112803126A (en) | 2020-12-30 | 2020-12-30 | Square metal shell lithium ion battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011624957.5A CN112803126A (en) | 2020-12-30 | 2020-12-30 | Square metal shell lithium ion battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112803126A true CN112803126A (en) | 2021-05-14 |
Family
ID=75807658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011624957.5A Pending CN112803126A (en) | 2020-12-30 | 2020-12-30 | Square metal shell lithium ion battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112803126A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206148524U (en) * | 2016-09-22 | 2017-05-03 | 山东衡远新能源科技有限公司 | Square aluminum hull lithium ion battery cover plate terminal |
| CN206789609U (en) * | 2017-05-12 | 2017-12-22 | 包头昊明稀土新电源科技有限公司 | Battery attachment means in groups |
| CN107634173A (en) * | 2017-09-30 | 2018-01-26 | 东莞市德尔能新能源股份有限公司 | Lithium ion battery exempts from spot welding connector, exempts from spot welding connection unit and battery modules |
| KR20190089650A (en) * | 2018-01-23 | 2019-07-31 | 주식회사 엘지화학 | Terminal connection structure of cylindrical type battery and battery pack using the same |
| WO2019148643A1 (en) * | 2018-01-31 | 2019-08-08 | 宁德时代新能源科技股份有限公司 | Busbar and battery module |
| CN211907564U (en) * | 2020-06-04 | 2020-11-10 | 江苏塔菲尔动力系统有限公司 | Battery electrode connection structure and battery module |
-
2020
- 2020-12-30 CN CN202011624957.5A patent/CN112803126A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206148524U (en) * | 2016-09-22 | 2017-05-03 | 山东衡远新能源科技有限公司 | Square aluminum hull lithium ion battery cover plate terminal |
| CN206789609U (en) * | 2017-05-12 | 2017-12-22 | 包头昊明稀土新电源科技有限公司 | Battery attachment means in groups |
| CN107634173A (en) * | 2017-09-30 | 2018-01-26 | 东莞市德尔能新能源股份有限公司 | Lithium ion battery exempts from spot welding connector, exempts from spot welding connection unit and battery modules |
| KR20190089650A (en) * | 2018-01-23 | 2019-07-31 | 주식회사 엘지화학 | Terminal connection structure of cylindrical type battery and battery pack using the same |
| WO2019148643A1 (en) * | 2018-01-31 | 2019-08-08 | 宁德时代新能源科技股份有限公司 | Busbar and battery module |
| CN211907564U (en) * | 2020-06-04 | 2020-11-10 | 江苏塔菲尔动力系统有限公司 | Battery electrode connection structure and battery module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2833899Y (en) | Lithium ion cell pole pieces and core | |
| CN102013511B (en) | Flexible packed cylindrical battery | |
| CN103730623A (en) | End surface welding cylindrical lithium battery | |
| CN112803126A (en) | Square metal shell lithium ion battery pack | |
| CN207489927U (en) | A kind of polymer based electrolyte all-solid lithium-ion battery | |
| CN216389540U (en) | Lithium ion battery cover plate structure with anti-rotation pole | |
| CN201838674U (en) | Novel lithium-ion storage battery | |
| CN210628400U (en) | Lithium ion battery connector | |
| CN114614204A (en) | High-capacity battery pack with conductive component | |
| CN114597556A (en) | Sodium ion electricity core aluminum hull apron | |
| CN210224192U (en) | Multi-pole pair cylindrical battery | |
| CN210866569U (en) | Aluminum-copper alloy wiring terminal for photovoltaic power generation | |
| CN201749903U (en) | Steel case lithium ion battery and battery pack structure thereof | |
| CN209472069U (en) | A kind of colloid storage battery of high activity | |
| CN207052667U (en) | A kind of security colloid storage battery of built-in ball binding post | |
| CN206558625U (en) | A kind of antimagnetic lithium battery | |
| CN201838671U (en) | Lithium battery with built-in metal conduit | |
| CN212751057U (en) | Foldable small-size lithium battery capable of saving space | |
| CN206313016U (en) | A kind of battery modules | |
| CN2563757Y (en) | 9V chargeable battery | |
| CN220474853U (en) | Wiring terminal | |
| CN216563247U (en) | Battery and electronic device | |
| CN211789250U (en) | Disc type aluminum-to-nickel tab convenient to connect and fix | |
| CN201812860U (en) | Soft-packing cylindrical battery | |
| CN210805895U (en) | Lithium battery shell and internal structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210514 |
|
| RJ01 | Rejection of invention patent application after publication |