CN211605329U - Special-shaped multi-electrode-lug lithium ion battery - Google Patents
Special-shaped multi-electrode-lug lithium ion battery Download PDFInfo
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- CN211605329U CN211605329U CN202020245215.0U CN202020245215U CN211605329U CN 211605329 U CN211605329 U CN 211605329U CN 202020245215 U CN202020245215 U CN 202020245215U CN 211605329 U CN211605329 U CN 211605329U
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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 multipolar ear lithium ion battery of dysmorphism, include: the lithium ion battery comprises a plurality of superposed special-shaped lithium ion chips, wherein a positive electrode lug and a negative electrode lug on each lithium ion chip are respectively communicated through a total positive plate and a total negative plate, and a total positive angle and a total negative angle are welded at the edges of the total positive plate and the total negative plate; welding grooves are formed in the total positive plate and the total negative plate, and each positive tab and each negative tab correspond to one welding groove; the upper part of the welding point in each welding groove is provided with a U-shaped heat dissipation through groove; the lower part of total positive plate with total negative pole piece all is equipped with the equal open carriage from top to bottom, surrounds a plurality of anodal ears and negative pole ear in the carriage respectively. The utility model discloses can effectively avoid the parallelly connected in-process of present electric core because the welding point department that the welding point insecure leads to the problem that all batteries of distal end all became invalid, can in time dispel the high temperature of welding point department because the too big production of electric current has improved the durability and the security of battery simultaneously.
Description
Technical Field
The utility model relates to a battery production field. More specifically, the utility model relates to a multipolar ear lithium ion battery of dysmorphism.
Background
At present, the production of special-shaped multi-lug lithium ion batteries is carried out in a lamination mode, more than two special-shaped lithium ion chips are laminated, each cell chip comprises a positive lug and a negative lug, and a plurality of special-shaped lithium ion chips are connected in series and parallel as required to be assembled into the special-shaped multi-lug lithium ion battery with required capacity.
In order to increase the battery capacity and ensure the heat dissipation, a plurality of special-shaped lithium ion chips are generally combined and connected, for example, in the special-shaped multi-electrode tab lithium ion battery in patent 201721169246.7, a plurality of electric chips are bound in parallel, each electric core is provided with a positive plate tab and a negative plate tab, and when the positive and negative plate tabs are welded in parallel, the latter tab is welded on the former tab, and the welding is performed sequentially.
The above method has a disadvantage. Adopt welded mode among the parallelly connected in-process of utmost point ear, weld the utmost point ear of back on the utmost point ear of the previous one during the welding, weld in proper order, when utmost point ear short circuit or welding insecure, disconnected department all is in the state of opening circuit to the electric core of distal end, can finally lead to the battery capacity of battery to descend fast, does not utilize the use of battery, and the structure that forms after welding between utmost point ear and the utmost point ear is inseparable moreover, and the radiating effect is unsatisfactory.
Disclosure of Invention
An object of the utility model is to solve at least above-mentioned problem to a multipolar ear lithium ion battery of dysmorphism is provided, utilizes the total positive plate of conductive metal preparation and total negative pole piece, will need parallelly connected positive ear and negative pole ear to weld in proper order on total positive plate and total negative pole piece, even a certain utmost point ear does not weld firmly at the in-process of spot welding like this, also can guarantee that remaining electric core can continue to use, and then improves the durability of battery.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a special-shaped multi-polar ear lithium ion battery including:
the lithium ion battery comprises a plurality of special-shaped lithium ion chips, a plurality of lithium ion battery cores and a plurality of lithium ion battery cores, wherein the special-shaped lithium ion chips are arranged in an overlapping mode, a positive electrode lug and a negative electrode lug of each special-shaped lithium ion chip are arranged on the same side, the distance between the positive electrode lug and the negative electrode lug of each special-shaped lithium ion chip is equal, the positive electrode lugs are overlapped in a row mode, and the negative;
the special-shaped multi-lug lithium ion battery comprises a main positive plate, a plurality of positive welding grooves and a plurality of negative welding grooves, wherein the main positive plate is rectangular and horizontally arranged, one surface of the main positive plate is provided with the plurality of positive welding grooves which are parallel to each other and are uniformly spaced, the number of the positive welding grooves is the same as that of positive lugs of the special-shaped multi-lug lithium ion battery, the positive welding grooves are parallel to the positive lugs, and each positive lug corresponds to one positive welding groove; a total positive pole angle is welded at the edge of one surface of the total positive pole piece, which is opposite to the surface of the positive welding groove, and the total positive pole angle is perpendicular to the total positive pole piece; a U-shaped heat dissipation through groove is formed in the upper portion of the welding point of the total positive plate and the positive lug in each positive welding groove;
the main negative plate is rectangular and horizontally arranged, one surface of the main negative plate is provided with a plurality of mutually parallel negative welding grooves with uniform intervals, the number of the negative welding grooves is the same as that of the negative electrode lugs of the special-shaped multi-electrode lug lithium ion battery, the negative welding grooves are parallel to the negative electrode lugs, and each negative electrode lug corresponds to one negative welding groove; a total negative pole angle is welded at the edge of one surface of the total negative pole piece, which is opposite to the surface of the negative welding groove, and the total negative pole angle is perpendicular to the total negative pole piece; a U-shaped heat dissipation through groove is formed in the upper portion of a welding point of the total negative plate and the negative electrode lug in each negative welding groove;
the lower part of the total positive plate is provided with a first supporting frame which is open up and down, the first supporting frame is supported on the plurality of special-shaped lithium ion chips, the plurality of positive lugs are surrounded in the first supporting frame, and the upper part of the first supporting frame is inserted into the total positive plate; the lower part of the total negative plate is also provided with a second supporting frame which is open up and down, the second supporting frame is supported on the plurality of special-shaped lithium ion chips and surrounds the plurality of negative electrode lugs in the second supporting frame, and the upper part of the second supporting frame is inserted into the total negative plate.
Preferably, the surface of the forward welding groove is provided with radiating fins which are positioned on two side edges of the forward welding groove; and the surface of the negative welding groove is provided with radiating fins which are positioned at two side edges of the negative welding groove.
Preferably, the heat sink is serpentine in shape.
Preferably, the heat dissipation through groove is internally provided with a cage-shaped heat dissipation metal structure which is fixedly connected with the heat dissipation through groove.
Preferably, a layer of insulating adhesive tape is arranged above the total positive plate and the total negative plate.
Preferably, the first support frame with be equipped with a plurality of ventilation holes on the positive pole ear vertically lateral wall, the second support frame with be equipped with a plurality of ventilation holes on the negative pole ear vertically lateral wall, first support frame with the second support frame is insulating material and makes.
The utility model discloses at least, include following beneficial effect:
1. the utility model discloses a set up total positive plate and total negative pole piece, the positive ear that will connect in parallel will be in the same place through total positive plate welding, and the negative pole ear that will connect in parallel will be in the same place through total negative pole piece welding, just so can guarantee when a certain pole piece utmost point ear is not welded and is fastened, remains electric core homoenergetic normal use, has improved the durability of the multipolar ear lithium ion battery of dysmorphism.
2. The utility model discloses a be provided with ventilation hole, heat dissipation through groove, fin on total positive plate and total negative pole piece, avoided positive negative pole ear spot welding department electric current volume to produce high fever when too big, make the welding department insecure, improved the security and the durability of battery.
3. The utility model discloses a set up total positive plate and total negative pole piece, provide the higher multipolar ear lithium ion battery of dysmorphism of security and durability.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a special-shaped multi-electrode-ear lithium ion battery according to one embodiment of the present invention;
FIG. 2 is an enlarged side sectional view taken along line A of FIG. 1;
FIG. 3 is an enlarged cross-sectional view taken along line B of FIG. 2;
fig. 4 is a schematic sectional view of the connection between the negative welding groove and the heat dissipation through groove in one embodiment of the present invention;
fig. 5 is a schematic structural diagram of the total positive plate according to one of the technical solutions of the present invention;
fig. 6 is a schematic view of the heat dissipation hole structure on the first support frame according to one of the technical solutions of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1-6, the utility model provides a special-shaped multi-polar ear lithium ion battery 1, including:
the lithium ion battery comprises a plurality of special-shaped lithium ion chips, a plurality of lithium ion battery modules and a plurality of lithium ion battery modules, wherein the special-shaped lithium ion chips are overlapped, and the shape of each electric chip can be any one of circular, oval, triangular, hexagonal and arc; each electric chip is provided with a positive tab 6 and a negative tab 7, the positive tab 6 and the negative tab 7 of the special-shaped lithium ion chips are arranged on the same side, the distances between the positive tab 6 and the negative tab 7 of each special-shaped lithium ion chip are equal, the positive tabs 6 are overlapped in a row shape, and the negative tabs 7 are overlapped in a row shape;
the total positive plate 2 is rectangular and horizontally arranged, and the material of the total positive plate can be any one of nickel, copper or aluminum; one surface of the total positive plate 2 is provided with a plurality of mutually parallel positive welding grooves 8 which are uniformly spaced, the number of the positive welding grooves 8 is the same as that of the positive lugs 6 of the special-shaped multi-lug lithium ion battery 1, the positive welding grooves 8 are parallel to the positive lugs 6, each positive lug 6 corresponds to one positive welding groove 8, and the positive lugs are inserted into the positive welding grooves and then subjected to spot welding; a total positive corner 4 is welded at the edge of the surface, opposite to the surface where the positive welding groove 8 is located, of the total positive plate 2, the total positive corner 4 is perpendicular to the total positive plate 2, the total positive corner is made of any one of nickel, copper or aluminum and is made of the same material as the total positive plate, and the total positive corner 4 is used for being welded with an external circuit; a U-shaped heat dissipation through groove 9 is arranged at the upper part of the welding point of the total positive plate 2 and the positive lug 6 in each positive welding groove 8, the U-shaped heat dissipation through groove just surrounds the welding point in the U-shaped heat dissipation through groove, an air circulation channel can be arranged in the U-shaped heat dissipation through groove, and a heat dissipation metal sheet can be arranged in the U-shaped heat dissipation through groove and is mainly used for dissipating high temperature at the welding point;
the total negative plate 3 is rectangular and horizontally arranged, and the material of the total negative plate can be any one of nickel and copper; one surface of the total negative plate 3 is provided with a plurality of mutually parallel negative welding grooves with uniform intervals, the number of the negative welding grooves is the same as that of the negative electrode lugs 7 of the special-shaped multi-electrode lug lithium ion battery, the negative welding grooves are parallel to the negative electrode lugs 7, each negative electrode lug 7 corresponds to one negative welding groove, and the negative electrode lugs are inserted into the negative welding grooves and then subjected to spot welding; a total negative pole angle 5 is welded at the edge of the surface, opposite to the surface where the negative welding groove is located, of the total negative pole piece 3, the total negative pole angle 5 is perpendicular to the total negative pole piece 3, the total negative pole angle is made of any one of nickel and copper, and the total negative pole angle 5 is used for being welded with an external circuit; a U-shaped heat dissipation through groove is arranged at the upper part of the welding point of the total negative plate 3 and the negative electrode lug 7 in each negative welding groove, the U-shaped heat dissipation through groove just surrounds the welding point in the U-shaped heat dissipation through groove, an air circulation channel can be arranged in the U-shaped heat dissipation through groove, and a heat dissipation metal sheet can be arranged in the U-shaped heat dissipation through groove and is mainly used for dissipating high temperature at the welding point;
the lower part of the total positive plate 2 is provided with a first supporting frame 11 with openings at the upper part and the lower part, and the first supporting frame 11 is made of insulating materials, wherein the materials of the first supporting frame 11 can be plastics; the first supporting frame 11 is supported on the plurality of special-shaped lithium ion chips, the plurality of positive lugs 6 are enclosed in the first supporting frame 11, and the upper part of the first supporting frame 11 is inserted and connected with the total positive plate 2; the lower part of the total negative plate 3 is also provided with a second supporting frame which is open at the upper part and the lower part, and the second supporting frame is made of insulating materials, and the materials of the second supporting frame can be plastics; the second supporting frame is supported on the plurality of special-shaped lithium ion chips, the plurality of negative electrode lugs are surrounded in the second supporting frame, and the upper part of the second supporting frame is connected with the total negative electrode piece in an inserting mode;
in the technical scheme, in the use process, firstly, the electric chips to be connected in parallel are overlapped one by one, the position consistency between the positive lugs and the position consistency between the negative lugs are ensured, then, one surface of the total positive plate containing the positive welding grooves is aligned to each positive lug, the positive lugs are ensured to be inserted into the welding grooves, and then spot welding is carried out; in the same way, one surface of the total negative plate, which contains the negative welding grooves, is aligned to each negative tab, so that the negative tabs are ensured to be inserted into the welding grooves, and then spot welding is carried out; after the positive and negative electrode lugs and the total positive and negative electrode plates are subjected to spot welding, respectively welding a total positive electrode angle and a total negative electrode angle with the edges of the total positive electrode plate and the total negative electrode plate for connecting with an external circuit; finally, inserting the first support frame and the second support frame on the total positive plate and the total negative plate respectively; adopt this technical scheme, because total positive plate and total negative pole piece are respectively with each positive tab, each negative pole ear has linked up, avoided in the battery production process because spot welding insecure leads to the problem that all electric chips of splice to distal end all became invalid, logical groove has set up the heat dissipation in the weld groove top of total positive plate and total negative pole piece simultaneously, and the logical groove of heat dissipation is located the top of spot welding department, can effectively dispel the high temperature of spot welding department, avoid spot welding department to have the high fever that produces when heavy current passes through and the safety problem and the battery failure problem that lead to, can improve the security and the durability of battery.
In another technical scheme, a radiating fin 10 is arranged on the surface of the forward welding groove 8, and the radiating fin 10 is positioned on two side edges of the forward welding groove 8; the surface of the negative welding groove is provided with a radiating fin 10, the radiating fin 10 is positioned at two side edges of the negative welding groove, the radiating fin is a metal heat conducting fin, and the material of the radiating fin can be copper or aluminum; by adopting the technical scheme, the obtained beneficial effects are that the high temperature at the spot welding position can be quickly dissipated by conducting heat through the metal sheet, the problem that the battery fails due to the fact that the high temperature generated by the large current passing through the spot welding position cannot be timely dissipated is avoided, and the utilization rate of the battery can be improved.
In another technical scheme, the radiating fins 10 are serpentine, and by adopting the technical scheme, the beneficial effects that the radiating area can be increased and the radiating effect is improved by arranging the serpentine radiating fins are achieved.
In another kind of technical scheme, have the cage form heat dissipation metallic structure 12 who leads to the groove fastening connection with the heat dissipation in the logical groove 9 of heat dissipation, the metal material can be aluminium or copper, adopts this technical scheme, and the beneficial effect who obtains is that cage form heat dissipation structure has greatly increased heat radiating area, when the logical groove of air circulation heat dissipation, can take away the heat on the cage form heat dissipation metallic structure fast to reach quick radiating effect.
In another technical scheme, a layer of insulating adhesive tape 13 is arranged above the total positive plate 2 and the total negative plate 3, the insulating adhesive tapes are high-temperature and high-pressure resistant insulating adhesives and can be polyester film adhesive tapes, and by adopting the technical scheme, the short-circuit accident caused by the contact possibly generated by the large-area total positive plate and the total negative plate exposed in the air is avoided, and the safety of the battery is improved.
In another technical scheme, a plurality of vent holes 14 are formed in the side wall, perpendicular to the positive tab 6, of the first support frame 11, a plurality of vent holes 14 are formed in the side wall, perpendicular to the negative tab 7, of the second support frame, the first support frame 11 and the second support frame are made of insulating materials, and the insulating materials can be plastics; by adopting the technical scheme, the obtained beneficial effects are that the ventilation holes on the first supporting frame and the second supporting frame respectively form an air convection channel with the heat dissipation through grooves above the positive welding groove and the negative welding groove, so that the heat dissipation speed can be increased, and the heat dissipation effect is improved.
The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the profiled multi-polar ear lithium ion battery of the present invention will be apparent to those skilled in the art.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (6)
1. A profiled multi-lug lithium ion battery comprising:
the lithium ion battery comprises a plurality of special-shaped lithium ion chips, a plurality of lithium ion battery cores and a plurality of lithium ion battery cores, wherein the special-shaped lithium ion chips are arranged in an overlapping mode, a positive electrode lug and a negative electrode lug of each special-shaped lithium ion chip are arranged on the same side, the distance between the positive electrode lug and the negative electrode lug of each special-shaped lithium ion chip is equal, the positive electrode lugs are overlapped in a row mode, and the negative;
the special-shaped multi-lug lithium ion battery comprises a main positive plate, a plurality of positive welding grooves and a plurality of negative welding grooves, wherein the main positive plate is rectangular and horizontally arranged, one surface of the main positive plate is provided with the plurality of positive welding grooves which are parallel to each other and are uniformly spaced, the number of the positive welding grooves is the same as that of positive lugs of the special-shaped multi-lug lithium ion battery, the positive welding grooves are parallel to the positive lugs, and each positive lug corresponds to one positive welding groove; a total positive pole angle is welded at the edge of one surface of the total positive pole piece, which is opposite to the surface of the positive welding groove, and the total positive pole angle is perpendicular to the total positive pole piece; a U-shaped heat dissipation through groove is formed in the upper portion of the welding point of the total positive plate and the positive lug in each positive welding groove;
the main negative plate is rectangular and horizontally arranged, one surface of the main negative plate is provided with a plurality of mutually parallel negative welding grooves with uniform intervals, the number of the negative welding grooves is the same as that of the negative electrode lugs of the special-shaped multi-electrode lug lithium ion battery, the negative welding grooves are parallel to the negative electrode lugs, and each negative electrode lug corresponds to one negative welding groove; a total negative pole angle is welded at the edge of one surface of the total negative pole piece, which is opposite to the surface of the negative welding groove, and the total negative pole angle is perpendicular to the total negative pole piece; a U-shaped heat dissipation through groove is formed in the upper portion of a welding point of the total negative plate and the negative electrode lug in each negative welding groove;
the lower part of the total positive plate is provided with a first supporting frame which is open up and down, the first supporting frame is supported on the plurality of special-shaped lithium ion chips, the plurality of positive lugs are surrounded in the first supporting frame, and the upper part of the first supporting frame is inserted into the total positive plate; the lower part of the total negative plate is also provided with a second supporting frame which is open up and down, the second supporting frame is supported on the plurality of special-shaped lithium ion chips and surrounds the plurality of negative electrode lugs in the second supporting frame, and the upper part of the second supporting frame is inserted into the total negative plate.
2. The profiled multi-lug lithium ion battery as defined in claim 1, wherein said positive welding groove has fins on its face, said fins being located on both sides of said positive welding groove; and the surface of the negative welding groove is provided with radiating fins which are positioned at two side edges of the negative welding groove.
3. The profiled multi-polar ear lithium ion battery of claim 2, wherein the heat sink is serpentine in shape.
4. The profiled multi-tab lithium ion battery of claim 1 wherein the heat dissipating channel has therein a cage-like heat dissipating metal structure in secure connection with the heat dissipating channel.
5. The lithium ion battery of claim 1, wherein a layer of insulating tape is disposed over each of the positive and negative plates.
6. The special-shaped multi-lug lithium ion battery as claimed in claim 1, wherein a plurality of ventilation holes are formed in the side wall of the first supporting frame perpendicular to the positive lug, a plurality of ventilation holes are formed in the side wall of the second supporting frame perpendicular to the negative lug, and the first supporting frame and the second supporting frame are made of insulating materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020245215.0U CN211605329U (en) | 2020-03-03 | 2020-03-03 | Special-shaped multi-electrode-lug lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020245215.0U CN211605329U (en) | 2020-03-03 | 2020-03-03 | Special-shaped multi-electrode-lug lithium ion battery |
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| Publication Number | Publication Date |
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| CN211605329U true CN211605329U (en) | 2020-09-29 |
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| CN202020245215.0U Active CN211605329U (en) | 2020-03-03 | 2020-03-03 | Special-shaped multi-electrode-lug lithium ion battery |
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