CN108110314B - Battery module and method for manufacturing same - Google Patents
Battery module and method for manufacturing same Download PDFInfo
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- CN108110314B CN108110314B CN201711363339.8A CN201711363339A CN108110314B CN 108110314 B CN108110314 B CN 108110314B CN 201711363339 A CN201711363339 A CN 201711363339A CN 108110314 B CN108110314 B CN 108110314B
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- battery module
- battery
- current collectors
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- printing
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 11
- 238000010146 3D printing Methods 0.000 claims abstract description 26
- 239000002002 slurry Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 8
- 238000007639 printing Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000007773 negative electrode material Substances 0.000 claims description 5
- 239000007774 positive electrode material Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000572 Lithium Nickel Cobalt Manganese Oxide (NCM) Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- FBDMTTNVIIVBKI-UHFFFAOYSA-N [O-2].[Mn+2].[Co+2].[Ni+2].[Li+] Chemical compound [O-2].[Mn+2].[Co+2].[Ni+2].[Li+] FBDMTTNVIIVBKI-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000758 substrate Substances 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
-
- 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
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
-
- 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
-
- 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
Abstract
The invention relates to a battery module and a manufacturing method thereof, wherein the manufacturing method of the battery module comprises the following steps: prefabricating a plurality of battery cells with current collectors; stacking a plurality of the single batteries to form a battery module; and 3D printing a connecting plate for connecting the current collectors in each battery cell. According to the manufacturing method of the battery module, the connecting plate is directly printed on the battery module in a 3D mode, on one hand, the connecting plate can be printed according to requirements, the current collectors are prevented from being limited by the number and the structure when being connected, and the current collectors with complex structures and more numbers can be connected through the connecting plate printed in the 3D mode; on the other hand, the connecting plate is directly printed on the side face, so that excessive space is not occupied, the space is greatly saved, and the energy density of the battery can be improved from two aspects.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a battery module and a manufacturing method thereof.
Background
The lithium ion battery mainly comprises a positive electrode, a negative electrode, a current collector, a diaphragm, electrolyte and a shell, wherein the current collector is used as a current collection structure in the battery, and the current collection structure has the main function of collecting current generated by active substances of the battery so as to form larger current to be output outwards.
In order to meet different voltage and power output requirements, battery cells are usually combined into a battery module in various series-parallel connection modes. Therefore, in the process of manufacturing the battery module, it is necessary to connect the current collectors of the plurality of battery cells. However, generally, the current collectors of a plurality of battery cells are connected by welding, so that the number of the current collectors which can be welded is limited, and the current collectors occupy a large space, which is not favorable for increasing the energy density of the battery.
Disclosure of Invention
Therefore, it is necessary to provide a method for manufacturing a battery module capable of improving the energy density of a battery, aiming at the problem that the conventional welding of a current collector is not beneficial to improving the energy density of the battery.
It is also necessary to provide a battery module manufactured by the above-described method of manufacturing a battery module.
A method for manufacturing a battery module includes the steps of:
prefabricating a plurality of battery cells with current collectors;
stacking a plurality of the single batteries to form a battery module;
and 3D printing a connecting plate for connecting the current collectors in each battery cell.
According to the manufacturing method of the battery module, the connecting plate is directly printed on the battery module in a 3D mode, on one hand, the connecting plate can be printed according to requirements, the current collectors are prevented from being limited by the number and the structure when being connected, and the current collectors with complex structures and more numbers can be connected through the connecting plate printed in the 3D mode; on the other hand, the connecting plate is directly printed on the side face, so that excessive space is not occupied, the space is greatly saved, and the energy density of the battery can be improved from two aspects.
In one embodiment, the step of stacking the plurality of battery cells to form the battery module specifically includes:
the plurality of battery monomers are stacked and keep the plurality of current collectors to protrude to the same side of the battery module along the longitudinal direction of the current collectors;
the step of 3D printing a connection plate connecting the current collectors in each of the battery cells specifically includes:
and 3D printing a connecting plate which is connected with a plurality of current collectors on the same side.
In one embodiment, the step of 3D printing a connection plate connecting the current collectors in each of the battery cells specifically includes:
and 3D printing a connecting plate for connecting a plurality of current collectors on the same side in a plane perpendicular to the plane of the current collectors.
In one embodiment, the current collector includes a positive current collector and a negative current collector, the connection plate includes a positive connection plate and a negative connection plate, and the step of stacking the plurality of battery cells to form the battery module specifically includes:
the plurality of battery monomers are stacked, the plurality of positive current collectors are kept to protrude from the same side of the battery module along the self longitudinal direction, and the plurality of negative current collectors are kept to protrude from the same other side of the battery module along the self longitudinal direction;
the step of 3D printing a connection plate connecting the current collectors in each of the battery cells specifically includes:
the 3D prints and connects a plurality of that are located same one side anodal mass flow anodal connecting plate to 3D prints and connects a plurality of that are located same opposite side negative pole mass flow body the negative pole connecting plate.
In one embodiment, the step of prefabricating a plurality of battery cells with current collectors specifically includes:
coating a positive electrode active material on part of the surface of the positive electrode current collector to form a positive electrode plate, coating a negative electrode active material on part of the surface of the negative electrode current collector to form a negative electrode plate, laminating the positive electrode plate and the negative electrode plate, and arranging a diaphragm between the positive electrode plate and the negative electrode plate to form the battery monomer.
In one embodiment, the step of stacking the plurality of battery cells to form the battery module specifically includes:
the positive plate and the negative plate in the two adjacent battery monomers are adjacently arranged, and the diaphragm is arranged between the two adjacent positive plates and the negative plate.
In one embodiment, the positive electrode current collector and the positive electrode connection plate are both made of aluminum metal, and the negative electrode current collector and the negative electrode connection plate are both made of copper metal or nickel metal.
In one embodiment, the step of 3D printing a connection plate connecting the current collectors in each of the battery cells further comprises the following steps:
and 3D printing slurry is prepared, the slurry is filtered, and the filtered slurry is filled into the printing nozzle.
In one embodiment, the step of 3D printing a connection plate connecting the current collectors in each of the battery cells further includes the following steps:
and 3D printing a bus board on the connecting board along a direction parallel to the plane of the current collector.
A battery module is manufactured by the manufacturing method of the battery module.
Drawings
Fig. 1 is a schematic flow chart illustrating a method for manufacturing a battery module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first viewing angle of a battery module according to an embodiment of the invention;
fig. 3 is a structural schematic diagram of the battery module shown in fig. 2 at a second viewing angle;
fig. 4 is a schematic structural diagram of a third viewing angle of the battery module shown in fig. 2.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 4, a method for manufacturing a battery module according to an embodiment of the present invention includes the steps of:
in step S10, a plurality of battery cells 10 having current collectors 12 are prepared.
Specifically, the current collector 12 includes a positive electrode collector 121 and a negative electrode collector 123, a positive electrode sheet 11 is formed by coating a portion of the surface of the positive electrode collector 121 with a positive electrode active material 141, a negative electrode sheet 13 is formed by coating a portion of the surface of the negative electrode collector 123 with a negative electrode active material 143, and the positive electrode sheet 11 and the negative electrode sheet 13 are stacked with a separator 15 interposed therebetween to form the battery cell 10. The positive electrode tab 11 and the negative electrode tab 13 are separated by the separator 15, and power is supplied by a chemical reaction of the positive electrode active material 141 and the negative electrode active material 123 in the positive electrode tab 11 and the negative electrode tab 13. Further, the positive electrode collector 121 is aluminum metal, and the negative electrode collector 123 is copper metal or nickel metal. The positive electrode active material 141 is lithium cobaltate, lithium nickel cobalt manganese oxide, lithium manganate or lithium iron phosphate, and the negative electrode active material 143 is graphite, silicon carbon or lithium titanate.
In step S30, a plurality of battery cells 10 are stacked to form a battery module 100.
Specifically, when a plurality of battery cells 10 are stacked, the positive electrode tab 11 and the negative electrode tab 13 in two adjacent battery cells 10 are disposed adjacent to each other, and the separator 15 is disposed between the two adjacent positive electrode tabs 11 and the negative electrode tabs 13. That is, the battery module 100 includes a plurality of positive electrode sheets 11 and negative electrode sheets 13 stacked alternately, and a separator 15 is disposed between each of the positive electrode sheets 11 and the negative electrode sheets 13 to prevent the positive electrode sheets and the negative electrode sheets from contacting each other, so that a plurality of battery cells 10 are assembled to form the battery module 100.
In one embodiment, the plurality of battery cells 10 are stacked and maintain the plurality of current collectors 12 protruding from the same side of the battery module 100 along the longitudinal direction thereof, so as to facilitate the subsequent connection of the plurality of current collectors 12 from the same side of the battery module 100. Specifically, the plurality of single batteries 10 are stacked and maintain the plurality of positive current collectors 121 to protrude from the same side of the battery module 100 along the longitudinal direction thereof, and maintain the plurality of negative current collectors 123 to protrude from the same other side of the battery module 100 along the longitudinal direction thereof, so that the plurality of positive current collectors 121 protrude from the same side of the battery module 100 for subsequent connection, and the plurality of negative current collectors 123 protrude from the same other side of the battery module 100 and are staggered from the positive current collectors 121 for subsequent connection.
In step S50, the connection plate 20 connecting the current collectors 12 in each battery cell 10 is 3D printed. The 3D printing connection board 20 is directly arranged on the battery module 100, on one hand, the connection board 20 can be printed according to the requirement, so that the limitation of the number and the structure when the current collectors 12 are connected is avoided, and the current collectors 12 with complicated structures and more numbers can be connected through the 3D printed connection board 20; on the other hand, the connecting plate 20 is directly printed on the battery module 100, so that the space is greatly saved without occupying too much space, and the energy density of the battery can be improved from two aspects.
Further, after the plurality of battery cells 10 are stacked and maintain the plurality of current collectors 12 protruding from the same side of the battery module 100 along the longitudinal direction thereof, the connecting plate 20 for connecting the plurality of current collectors 12 located on the same side is printed in a 3D manner, and the plurality of current collectors 12 protruding from the same side of the battery module 100 are connected through the connecting plate 20, so that the operation is simple and the connection is reliable. Specifically, the connecting plate 20 for connecting the plurality of current collectors 12 located on the same side is 3D printed in a plane perpendicular to the plane of the current collectors 12, and the connecting plate 20 thus formed is connected perpendicular to the plurality of current collectors 12, so that the fluid 12 and the connecting plate 20 are connected at the shortest distance without occupying too much space, further saving space.
In one embodiment, the connection plate 20 includes a positive connection plate 21 and a negative connection plate 23, the positive connection plate 21 of the positive current collector 121 located at the same side is 3D printed, and the negative connection plate 23 connecting the plurality of negative current collectors 123 located at the same other side is 3D printed. That is, the positive connecting plate 21 printed on one side of the battery module 100 by 3D is connected with the plurality of positive current collectors 121, the negative connecting plate 23 printed on the other side of the battery module 100 by 3D is connected with the plurality of negative current collectors 123, the positive connecting plate 21 and the negative connecting plate 23 do not occupy too much space, and the positive current collectors 121 or the negative current collectors 123 with a large number can be connected, so that the energy density of the battery can be improved. It is understood that in other embodiments, the plurality of positive electrode current collectors 121 are connected by the 3D printed positive electrode connection plate 21, and the plurality of negative electrode current collectors 123 are welded to each other; or the plurality of positive electrode current collectors 121 are welded to each other, and the plurality of negative electrode current collectors 123 are connected by the 3D printed negative electrode connection plate 23.
Specifically, when the positive connection plate 21 and the negative connection plate 23 are printed in 3D, the battery module 100 is horizontally placed on a printing substrate of the 3D printer, and then the positive connection plate 21 and the negative connection plate 23 can be printed on two opposite sides of the battery module 100 respectively through the printing nozzles located on the sides. Also, the positive electrode connection plate 21 and the positive electrode current collector 121 are both made of aluminum metal, and the negative electrode connection plate 23 and the negative electrode current collector 123 are both made of copper metal or nickel metal. The materials of the positive connecting plate 21 and the positive current collector 121 are set to be the same, the negative connecting plate 23 and the negative current collector 121 are set to be the same, the situation that the resistance is influenced due to the fact that the materials of the positive connecting plate 21 and the positive current collector 121 are different in 3D printing is avoided, and the situation that the resistance is influenced due to the fact that the materials of the negative connecting plate 23 and the negative current collector 123 are different in 3D printing is avoided.
In the above method for manufacturing the battery module, the battery module 100 in which the plurality of battery cells 10 are stacked is prefabricated, then the positive electrode connecting plate 21 and the negative electrode connecting plate 23 are respectively 3D printed on two opposite sides of the battery module 100, the positive electrode current collector 121 in each battery cell 10 is connected through the positive electrode connecting plate 21, and the negative electrode current collector 123 in each battery cell 10 is connected through the negative electrode connecting plate 23. The connection can be flexibly performed through 3D printing without being limited by the structures and the number of the first current collector 121 and the second current collector 123, and simultaneously, the space can be saved to improve the energy density of the battery.
In one embodiment, step S40 is also included before step S50.
Step S40, 3D printing slurry is configured, the slurry is filtered, the filtered slurry is loaded into a printing nozzle, preparation work before printing is carried out, and then the connecting plate 20 can be printed out by printing the slurry.
In one embodiment, step S50 is followed by step S70.
In step S70, the bus bar 30 is 3D printed on the connection plate 20 in a direction parallel to the plane of the collector 12. The current on each current collector 12 passes through the connection plate 20, and then is collected and output through the bus plate 30. Specifically, the bus bar 30 is provided on each of the positive electrode connection plate 21 and the negative electrode connection plate 23.
Based on the above battery module manufacturing method, the present invention further provides a battery module 100, and the battery module 100 is manufactured by the above battery module manufacturing method, wherein the current collectors 12 in each battery cell 10 are connected by 3D printing, so that more current collectors 12 with more complicated structures can be connected, and the space occupied by the connection current collectors 12 is smaller, so that the battery module 100 with higher energy density can be manufactured.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for manufacturing a battery module is characterized by comprising the following steps:
prefabricating a plurality of battery cells with current collectors;
stacking a plurality of the single batteries to form a battery module;
3D printing a connecting plate for connecting the current collectors in each battery cell;
3D printing a bus board on the connecting board along a direction parallel to the plane of the current collector;
and after the current on each current collector passes through the connecting plate, the current is collected and output through the bus board.
2. The method of manufacturing a battery module according to claim 1, wherein the step of stacking a plurality of the battery cells to form a battery module specifically includes:
the plurality of battery monomers are stacked and keep the plurality of current collectors to protrude to the same side of the battery module along the longitudinal direction of the current collectors;
the step of 3D printing a connection plate connecting the current collectors in each of the battery cells specifically includes:
and 3D printing a connecting plate which is connected with a plurality of current collectors on the same side.
3. The battery module manufacturing method according to claim 2, wherein the step of 3D printing a connection plate that connects the current collectors in each of the battery cells specifically includes:
and 3D printing a connecting plate for connecting a plurality of current collectors on the same side in a plane perpendicular to the plane of the current collectors.
4. The battery module manufacturing method according to claim 2, wherein the current collector includes a positive current collector and a negative current collector, the connection plate includes a positive connection plate and a negative connection plate, and the step of stacking a plurality of the battery cells to form the battery module specifically includes:
the plurality of battery monomers are stacked, the plurality of positive current collectors are kept to protrude from the same side of the battery module along the self longitudinal direction, and the plurality of negative current collectors are kept to protrude from the same other side of the battery module along the self longitudinal direction;
the step of 3D printing a connection plate connecting the current collectors in each of the battery cells specifically includes:
the 3D prints and connects a plurality of that are located same one side anodal mass flow anodal connecting plate to 3D prints and connects a plurality of that are located same opposite side negative current collector the negative pole connecting plate.
5. The method for manufacturing a battery module according to claim 4, wherein the step of prefabricating a plurality of battery cells with current collectors specifically comprises:
coating a positive electrode active material on part of the surface of the positive electrode current collector to form a positive electrode plate, coating a negative electrode active material on part of the surface of the negative electrode current collector to form a negative electrode plate, laminating the positive electrode plate and the negative electrode plate, and arranging a diaphragm between the positive electrode plate and the negative electrode plate to form the battery monomer.
6. The method of manufacturing a battery module according to claim 5, wherein the step of stacking a plurality of the battery cells to form a battery module specifically includes:
the positive plate and the negative plate in the two adjacent battery monomers are adjacently arranged, and the diaphragm is arranged between the two adjacent positive plates and the negative plate.
7. The battery module manufacturing method according to claim 4, wherein the positive electrode current collector and the positive electrode connection plate are each made of metal aluminum, and the negative electrode current collector and the negative electrode connection plate are each made of metal copper or metal nickel.
8. The battery module manufacturing method according to claim 4, wherein the positive electrode current collector and the positive electrode connection plate are made of the same material, and the negative electrode current collector and the negative electrode connection plate are made of the same material.
9. The battery module manufacturing method according to claim 1, wherein the step of 3D printing a connection plate that connects the current collectors in each of the battery cells is further preceded by the step of:
and (3) preparing 3D printing slurry, filtering the slurry, and filling the filtered slurry into the printing nozzle.
10. A battery module manufactured by the method for manufacturing a battery module according to any one of claims 1 to 9.
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| CN201711363339.8A CN108110314B (en) | 2017-12-18 | 2017-12-18 | Battery module and method for manufacturing same |
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| CN201711363339.8A CN108110314B (en) | 2017-12-18 | 2017-12-18 | Battery module and method for manufacturing same |
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| CN108110314B true CN108110314B (en) | 2021-01-22 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1532961A (en) * | 2003-03-21 | 2004-09-29 | �����ǵ��ӹɷ�����˾ | Lithium ion secondary cell |
| CN104409776A (en) * | 2014-05-31 | 2015-03-11 | 福州大学 | Method for preparing cathode and anode coaxial lithium ion battery by 3D printing technology |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7198866B2 (en) * | 2002-07-09 | 2007-04-03 | Nissan Motor Co., Ltd. | Cell assembly |
| CN104409774B (en) * | 2014-05-31 | 2017-01-11 | 福州大学 | 3D printing method of lithium battery |
| CN104409683B (en) * | 2014-05-31 | 2016-09-07 | 福州大学 | A kind of method preparing anode and cathode lithium ion battery side by side based on coaxial 3D printing technique |
| US10727537B2 (en) * | 2014-09-02 | 2020-07-28 | G6 Materials Corp. | Electrochemical devices comprising nanoscopic carbon materials made by additive manufacturing |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1532961A (en) * | 2003-03-21 | 2004-09-29 | �����ǵ��ӹɷ�����˾ | Lithium ion secondary cell |
| CN104409776A (en) * | 2014-05-31 | 2015-03-11 | 福州大学 | Method for preparing cathode and anode coaxial lithium ion battery by 3D printing technology |
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