CN114079076B - Battery module manufacturing process, battery module and electronic equipment - Google Patents
Battery module manufacturing process, battery module and electronic equipment Download PDFInfo
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- CN114079076B CN114079076B CN202010801002.6A CN202010801002A CN114079076B CN 114079076 B CN114079076 B CN 114079076B CN 202010801002 A CN202010801002 A CN 202010801002A CN 114079076 B CN114079076 B CN 114079076B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000003792 electrolyte Substances 0.000 claims abstract description 44
- 239000011148 porous material Substances 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- 238000004806 packaging method and process Methods 0.000 claims abstract description 28
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 23
- 238000005538 encapsulation Methods 0.000 claims abstract description 22
- 239000012212 insulator Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 29
- 230000000712 assembly Effects 0.000 claims description 22
- 238000000429 assembly Methods 0.000 claims description 22
- 238000007599 discharging Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims 1
- 238000005755 formation reaction Methods 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000007784 solid electrolyte Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- H01M10/04—Construction or manufacture in general
- H01M10/0445—Multimode batteries, e.g. containing auxiliary cells or electrodes switchable in parallel or series connections
-
- 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
- H01M10/04—Construction or manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The disclosure relates to a manufacturing process of a battery module, the battery module and electronic equipment, and belongs to the technical field of batteries. The manufacturing process of the battery module comprises the following steps: packaging the battery cell by adopting an insulating piece, wherein the insulating piece is provided with pores, and the material of the insulating piece comprises a closed pore agent; connecting at least two packaged battery cores in series; placing the series-connected battery cells in an encapsulation shell, injecting electrolyte into the encapsulation shell, and carrying out formation treatment on the series-connected battery cells; heating the insulator to the closed cell agent to close the pores.
Description
Technical Field
The disclosure relates to the technical field of batteries, and in particular relates to a manufacturing process of a battery module, a battery module and electronic equipment.
Background
Quick charging is an important development trend of electronic devices such as mobile phones. The charging speed is generally increased by increasing the charging power. In the high-power charging technology, a high-voltage and low-current charging mode is adopted, so that the impedance heating of a charging circuit is reduced. Therefore, it is necessary to improve the voltage withstand capability of the battery module to accommodate the high power charging technology.
Disclosure of Invention
The disclosure provides a battery module manufacturing process, a battery module and electronic equipment, so as to adapt to a high-power charging technology.
In a first aspect, an embodiment of the present disclosure provides a manufacturing process of a battery module, the process including:
packaging the battery cell by adopting an insulating piece, wherein the insulating piece is provided with pores, and the material of the insulating piece comprises a closed pore agent;
connecting at least two packaged battery cores in series;
Placing the series-connected battery cells in an encapsulation shell, injecting electrolyte into the encapsulation shell, and carrying out formation treatment on the series-connected battery cells;
heating the insulator to the closed cell agent to close the pores.
In one embodiment, the battery cell comprises a pole piece and a tab connected with the pole piece; the adoption insulating part encapsulation electric core includes:
And an encapsulation cavity for encapsulating the pole piece is formed by adopting the insulating piece, and the pole lug extends to the outside of the encapsulation cavity.
In one embodiment, the tab includes a positive tab and a negative tab, and the series packaged cell includes:
And connecting the positive electrode lug of one of the battery cells with the negative electrode lug of the other battery cell in the two battery cells connected in series.
In one embodiment, before the forming the battery cell, the method includes:
the insulating piece and the battery cell are soaked in the electrolyte for a set period of time.
In one embodiment, the heating the insulator to the closed cell agent blocks the pores comprises:
baking the package housing, the insulator, and the cell in an environment at or above a closed cell temperature of the closed cell agent.
In one embodiment, the package housing is a soft package housing, and after the heating the insulating member, further includes:
discharging the gas generated in the process of the formation treatment in the packaging shell;
and carrying out encapsulation molding treatment on the encapsulation shell.
In a second aspect, an embodiment of the present disclosure provides a battery module, where the battery module is manufactured by using the process provided in the first aspect, and the battery module includes: at least one series-connected cell assembly, and a package housing encapsulating the series-connected cell assembly;
in the series-connected cell assemblies, each of the cell assemblies includes:
A battery cell;
The insulating piece forms a packaging cavity for packaging the battery cell; and
And electrolyte is encapsulated in the encapsulation cavity.
In one embodiment, the cell comprises: a pole piece and a pole lug connected with the pole piece;
The pole piece is arranged in the packaging cavity, and the pole lug extends to the outside of the packaging cavity;
in the series-connection battery cell assemblies, the lugs of adjacent battery cell assemblies are connected.
In one embodiment, the insulating seal has pores, and the material of the insulating seal includes a closed cell agent, the pores being blocked by the closed cell agent.
In a third aspect, an embodiment of the present disclosure provides an electronic device, including the battery module provided in the second aspect.
The battery module manufacturing process, the battery module and the electronic equipment provided by the disclosure have the following beneficial effects:
According to the manufacturing process of the battery module, the series connection and formation treatment of the battery core assembly are firstly carried out, and then the pores of the insulating piece are plugged through heat release. The battery module manufactured by the process is packaged with at least two battery cell assemblies connected in series through a packaging shell. The number of independent packaging structures of the battery modules is reduced, so that the overall battery module structure is more compact. Furthermore, the volume of the battery module is reduced, and the energy density of the battery module is improved. And, each electric core assembly is encapsulated with electrolyte, and the electrolyte between the series-connected electric core assemblies does not circulate each other. In this way, the electrolyte in each cell module is in a single cell voltage environment, so that the use safety of the battery module is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic view illustrating a structure of a battery module according to an exemplary embodiment;
fig. 2 is a flowchart illustrating a battery module manufacturing process according to an exemplary embodiment;
Fig. 3 is a flowchart illustrating a battery module manufacturing process according to another exemplary embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "a" or "an" and the like as used in the description and the claims do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the terms "comprises," "comprising," and the like are intended to cover the presence of elements or articles recited as being "comprising" or "including," and equivalents thereof, without excluding other elements or articles. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this disclosure and the claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to any or all possible combinations including one or more of the associated listed items.
In some embodiments, the battery module includes at least two independently packaged battery modules connected in series to improve the pressure resistance of the overall battery module. However, such a method has the disadvantage of a large battery module and a low energy density.
Based on the above problems, the embodiments of the present disclosure provide a manufacturing process of a battery module, and an electronic device, so as to solve the defects of large volume and low energy density of a high-voltage battery module group.
In a first aspect, embodiments of the present disclosure provide a battery module. Fig. 1 is a schematic view illustrating a structure of a battery module according to an exemplary embodiment. As shown in fig. 1, the battery module includes: at least two cell assemblies 100, and a package housing 200. At least two of the cell assemblies 100 are connected in series, and the package housing 200 is formed with a cavity 210 to accommodate the at least two of the cell assemblies 100 connected in series.
In series connection of the cell assemblies 100, each cell assembly 100 includes: cell 110, insulator 120, and electrolyte 130.
The battery cell 110 includes a pole piece 111, and a tab 112 connected to the pole piece 111. The electrode sheet 111 includes a positive electrode sheet and a negative electrode sheet, which are stacked and separated by a separator. Tab 112 includes a positive tab connected to the positive tab and a negative tab connected to the negative tab.
The insulator 120 forms a package cavity that encapsulates the cell 110. The electrolyte of the pole pieces 111 of the battery cell 110 is encapsulated in the encapsulation cavity. That is, the positive electrode tab and the negative electrode tab are immersed in the electrolyte 130.
The tab 112 extends from the package cavity formed by the insulating member 120, and a portion of the tab 112 located outside the package cavity is used for communicating with an external load or power supply. When the battery cell assembly 100 works, the positive electrode plate and the negative electrode plate of the battery cell 110 generate ion migration through electrolyte, so that charging and discharging are realized.
In the series-connected cell assemblies 100, adjacent cell assemblies 100 are connected only by tabs. And, the electrolyte 130 in each cell assembly 100 is encapsulated in the encapsulation cavity formed by the respective insulator 120.
In this way, when the overall battery module operates, the voltage carried by the electrolyte 130 in each cell assembly 100 is the voltage between the positive tab and the negative tab of the cell assembly 100. That is, the electrolyte 130 of each cell assembly 100 is placed in a single cell voltage environment by the insulator 130. In this way, the voltage borne by the electrolyte 130 of each cell assembly 100 does not exceed the withstand voltage of the electrolyte, so that the safety of the battery module is ensured.
Here, the insulating member 120 has a hole that allows the fluid to pass therethrough. Accordingly, the electrolyte outside the insulating member 120 can penetrate through the insulating member 120 into the package cavity. Alternatively, the insulating member 120 is made of an insulating film having a porous structure, and the porous structure of the insulating film forms pores on the insulating member 120. And, the thickness of the insulating member 120 can be reduced by adopting the insulating film, so that the battery module realizes better structural integration, and the volume of the battery module is further reduced.
And, the material of the insulator 120 includes a closed cell agent. The closed cell agent expands in volume upon heating to a closed cell temperature, thereby plugging the pores in the insulator 120. The electrolyte 130 can be encapsulated within the encapsulation cavity of the insulator 120 when the pore is blocked by the closed cell agent. By adopting the mode, the manufacturing difficulty of the whole battery module can be reduced, and the manufacturing process of the battery module is described in detail below.
In the embodiment of the present disclosure, the electrolyte 130 and the battery cells 110 are encapsulated by the insulating member 120, so that at least two battery cell assemblies 100 are connected in series under the condition of ensuring the safety of the battery module, and the voltage-withstanding capability of the whole battery module is improved in this way, so that the battery module is suitable for high-power charging and discharging technology. And, at least two series-connected battery cell assemblies 100 are packaged in one package case 200, so that the number of independent package structures of the battery modules is reduced, the overall battery module structure is more compact, the volume of the battery modules is reduced, and the energy density of the battery modules is improved.
In a second aspect, embodiments of the present disclosure provide a manufacturing process of a battery module. Fig. 2 is a flowchart illustrating a battery module manufacturing process according to an exemplary embodiment. As shown in fig. 2, the process includes:
Step S201, packaging the battery cells by adopting an insulating piece, wherein the insulating piece is provided with pores, and the material of the insulating piece comprises a closed pore agent.
The battery cell comprises a pole piece and a pole lug connected with the pole piece. The step S201 specifically includes: and an encapsulation cavity for encapsulating the pole piece is formed by adopting an insulating piece, and the electrode lug of the battery core extends to the outside of the encapsulation cavity.
Alternatively, the insulating member is made of an insulating film having a porous structure. The material of the insulating film includes a closed cell agent. For example, the closed cell agent is Wen Bikong agent and Wen Bikong agent expands in volume when heated to the closed cell temperature, thereby blocking the pores in the insulating film.
Step S202, connecting at least two packaged battery cells in series.
The tab includes a positive tab and a negative tab, and step 203 specifically includes: the positive electrode tab of one cell is connected with the negative electrode tab of the other cell. Optionally, the positive electrode tab of one cell is welded to the negative electrode tab of the other cell.
And step 203, placing the series-connected battery cells in a packaging shell, injecting electrolyte into the packaging shell, and performing formation treatment on the series-connected battery cells.
Since the insulator has pores, the electrolyte injected into the package can is allowed to enter the inside of the insulator through the pores of the insulator, thereby contacting the cells packaged in the insulator.
Before the battery cell is subjected to formation treatment, the insulating piece and the battery cell are soaked in electrolyte for a set period of time. Alternatively, the set duration is 24 hours, 36 hours, or 48 hours. The set time length is set according to the thickness of the battery cell, and the thicker the thickness of the battery cell is, the longer the set time length is, so that the battery cell is ensured to be fully contacted with the electrolyte, and the formation reaction is carried out.
In the formation treatment process, the pole piece and the electrolyte in the battery cell react at the solid-liquid phase interface, so that a solid electrolyte interface (solid electrolyte interface, SEI) film is formed on the surface of the pole piece of the battery cell. The SEI film can stably exist in the electrolyte, is an excellent conductor of lithium ions, and can freely insert and release the lithium ions through the passivation layer. The cycling performance and the service life of the battery cell can be improved by forming the SEI film on the surface of the pole piece.
It should be noted that, in the formation process, the pores in the insulating film of the cell assembly are not yet closed, so that the electrolyte can flow through the pores. At this time, the electrolyte within the package case is in a full cell voltage environment. In the embodiment of the disclosure, the low-voltage formation treatment is performed by adopting a voltage lower than the highest withstand voltage (for example, 5V) of the electrolyte, so that the condition that the highest withstand voltage of the electrolyte is exceeded is avoided, and the process safety is ensured. And, the step S203 is performed under the condition that the pores in the insulating film are not closed yet and at least two cell assemblies are connected in series, so that the at least two cell assemblies can be simultaneously subjected to formation treatment, and the overall process efficiency is improved.
In the embodiments of the present disclosure, the formation process may be selected from an open formation process or a closed formation process. For example, the packaging shell is a soft package shell, and when the battery is a soft package battery, the battery can be optionally subjected to closed formation treatment, and the liquid injection port of the battery cell assembly is in a sealed state. The packaging shell is a hard shell, and under the condition that the battery is a hard battery, the opening formation treatment can be adopted, and at the moment, the liquid injection port of the battery cell assembly is in an open state.
And S204, heating the insulating piece until the pore is closed by the pore closing agent.
The closed cell agent is Wen Bikong agents in height, and the closed cell agent expands in heated volume in the step S204 so as to seal the pores on the insulating piece. At this time, electrolyte is packaged in the inside of insulating part for the electrolyte in every battery module is in single electric core voltage environment, avoids the electrolyte to bear the voltage that surpasses its withstand voltage value in the battery module use, ensures the module safety.
Optionally, in step S204, the package housing, the insulator, and the cells are baked in an environment at or above the closed cell temperature of the closed cell agent. Namely, the battery module is baked as a whole. The specific baking temperature and baking time can be determined according to the surface area of the insulating member and the content of the pore-closing agent in the insulating member.
In one embodiment, fig. 3 is a flowchart illustrating a battery module manufacturing process according to another exemplary embodiment. After step S204, the process further includes:
Step S205, exhausting the gas generated in the process of the formation process in the packaging shell and setting the amount of electrolyte.
In the formation process, the electrode sheet and the electrolyte react chemically to generate gas, and the gas needs to be extracted. In order to ensure that the chemical conversion treatment is performed smoothly, a large amount of electrolyte is injected in step S203, and it is necessary to remove the excess electrolyte after step S203. In particular, in the case where the closed cell formation process is adopted in step S203, it is necessary to discharge the gas generated by the reaction in step S205.
It should be noted that, after the hole of the insulating member is plugged in step 204, the air and liquid exhausting step is performed, so that excessive electrolyte is effectively prevented from being exhausted, and further, the service performance of the battery module is ensured.
And S206, performing encapsulation molding treatment on the encapsulation shell.
For the soft pack battery module, the redundant part (for example, the part where the liquid injection port is provided) of the package case is removed in step S206 to form a battery module of a predetermined shape. For the hard battery module, the encapsulation housing is plugged in step S206 to form a sealed housing.
According to the manufacturing process of the battery module, the series connection and formation treatment of the battery cell assembly are carried out before the pore of the insulating piece is plugged, and the air extraction and formation treatment are carried out after the pore of the insulating piece is plugged. The battery module manufactured by the process is packaged with at least two battery cell assemblies connected in series through a packaging shell. The number of independent packaging structures of the battery modules is reduced, the structural compactness of the whole battery module is improved, the volume of the battery module is reduced, and the energy density of the battery module is improved. And, each electric core assembly is encapsulated with electrolyte, and the electrolyte between the series-connected electric core assemblies does not circulate each other. In this way, the electrolyte in each cell module is in a single cell voltage environment, so that the use safety of the battery module is ensured.
In a third aspect, an embodiment of the present disclosure further provides an electronic device, where the electronic device includes the battery module provided in the first aspect. Among them, electronic devices include, but are not limited to: smart phones, tablet computers, desktop/laptop/handheld computers, notebook computers, ultra-mobile personal computer (UMPC), personal Digital Assistants (PDA), augmented reality (augmented reality, AR)/Virtual Reality (VR) devices.
The electronic equipment provided by the embodiment of the disclosure can support high-power charging by adopting the battery module, so that the charging efficiency is improved, and the user experience is optimized. And the battery module is smaller in size and higher in energy density, so that the charge and discharge performance of the electronic equipment is further optimized.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (9)
1. A battery module manufacturing process, characterized in that the process comprises:
packaging the battery cell by adopting an insulating piece, wherein the insulating piece is provided with pores, and the material of the insulating piece comprises a closed pore agent;
connecting at least two packaged battery cores in series;
Placing the series-connected battery cells in a packaging shell, and injecting electrolyte into the packaging shell so that the electrolyte enters the inside of the insulating piece through the pores of the insulating piece; and carrying out formation treatment on the series-connected battery cells;
And heating the insulating part to the closed pore agent to block the pore, discharging gas generated in the formation treatment process in the packaging shell after heating the insulating part, and carrying out packaging forming treatment on the packaging shell, wherein the packaging shell is a soft package shell.
2. The process of claim 1, wherein the cell comprises a pole piece and a tab connected to the pole piece; the adoption insulating part encapsulation electric core includes:
And an encapsulation cavity for encapsulating the pole piece is formed by adopting the insulating piece, and the pole lug extends to the outside of the encapsulation cavity.
3. The process of claim 2, wherein the tab comprises a positive tab and a negative tab, and the series packaged cell comprises:
And connecting the positive electrode lug of one of the battery cells with the negative electrode lug of the other battery cell in the two battery cells connected in series.
4. The process of claim 1, comprising, prior to said subjecting said cells to a formation process:
the insulating piece and the battery cell are soaked in the electrolyte for a set period of time.
5. The process of claim 1 wherein said heating said insulator to said closed cell agent to close said pores comprises:
baking the package housing, the insulator, and the cell in an environment at or above a closed cell temperature of the closed cell agent.
6. A battery module, characterized in that the battery module is manufactured by the process according to any one of claims 1 to 5, the battery module comprising: at least one series-connected cell assembly, and a package housing encapsulating the series-connected cell assembly;
in the series-connected cell assemblies, each of the cell assemblies includes:
A battery cell;
The insulating piece forms a packaging cavity for packaging the battery cell; and
And electrolyte is encapsulated in the encapsulation cavity.
7. The battery module of claim 6, wherein the cells comprise: a pole piece and a pole lug connected with the pole piece;
The pole piece is arranged in the packaging cavity, and the pole lug extends to the outside of the packaging cavity;
in the series-connection battery cell assemblies, the lugs of adjacent battery cell assemblies are connected.
8. The battery module according to claim 7, wherein the insulating sealing member has pores, and the material of the insulating member includes a closed cell agent, and the pores are blocked by the closed cell agent.
9. An electronic device, characterized in that the electronic device comprises the battery module according to any one of claims 6 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010801002.6A CN114079076B (en) | 2020-08-11 | 2020-08-11 | Battery module manufacturing process, battery module and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010801002.6A CN114079076B (en) | 2020-08-11 | 2020-08-11 | Battery module manufacturing process, battery module and electronic equipment |
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| Publication Number | Publication Date |
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| CN114079076A CN114079076A (en) | 2022-02-22 |
| CN114079076B true CN114079076B (en) | 2024-07-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1499664A (en) * | 2002-11-07 | 2004-05-26 | �ղ��Զ�����ʽ���� | Bipolar cell |
| CN107845834A (en) * | 2016-09-21 | 2018-03-27 | 株式会社东芝 | Battery pack, battery bag and vehicle |
| CN110518174A (en) * | 2019-10-23 | 2019-11-29 | 比亚迪股份有限公司 | A kind of battery, battery modules, battery pack and electric vehicle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9331358B2 (en) * | 2010-01-26 | 2016-05-03 | Apple Inc. | Battery with multiple jelly rolls in a single pouch |
| CN201838680U (en) * | 2010-10-30 | 2011-05-18 | 比亚迪股份有限公司 | Flexible packaging battery |
| DE102012018128A1 (en) * | 2012-09-13 | 2014-03-13 | Daimler Ag | Single cell e.g. lithium ion cell, for use in elliptic column-type non-aqueous electrolyte battery for electric car, has electrode film arrangement pressed against wall of cell housing by elastic element that is designed as hollow body |
| CN103208604B (en) * | 2013-03-18 | 2015-06-03 | 厦门大学 | Electrospinning composite diaphragm with thermal hole sealing function |
| CN209447852U (en) * | 2019-04-12 | 2019-09-27 | 北京小米移动软件有限公司 | Encapsulating film and battery, the electronic equipment of battery |
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2020
- 2020-08-11 CN CN202010801002.6A patent/CN114079076B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1499664A (en) * | 2002-11-07 | 2004-05-26 | �ղ��Զ�����ʽ���� | Bipolar cell |
| CN107845834A (en) * | 2016-09-21 | 2018-03-27 | 株式会社东芝 | Battery pack, battery bag and vehicle |
| CN110518174A (en) * | 2019-10-23 | 2019-11-29 | 比亚迪股份有限公司 | A kind of battery, battery modules, battery pack and electric vehicle |
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