CN113675487A - Formation pressurization method and system of polymer battery cell - Google Patents
Formation pressurization method and system of polymer battery cell Download PDFInfo
- Publication number
- CN113675487A CN113675487A CN202110718494.7A CN202110718494A CN113675487A CN 113675487 A CN113675487 A CN 113675487A CN 202110718494 A CN202110718494 A CN 202110718494A CN 113675487 A CN113675487 A CN 113675487A
- Authority
- CN
- China
- Prior art keywords
- battery cell
- clamping
- charging
- clamping force
- charging voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229920000642 polymer Polymers 0.000 title claims abstract description 12
- 239000012785 packaging film Substances 0.000 abstract description 5
- 229920006280 packaging film Polymers 0.000 abstract description 5
- 239000004033 plastic Substances 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 description 9
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
-
- 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
-
- 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)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a formation pressurization method and system of a polymer battery cell, which solve the problems of bulging and even cracking of an aluminum-plastic packaging film caused by over-quick clamping and single pressurization mode by clamping the battery cell in a sectional manner, matching different charging currents according to different voltages and applying different formation pressures.
Description
Technical Field
The invention relates to the technical field of polymer batteries, in particular to a formation pressurization method and system of a polymer battery core.
Background
In the current manufacturing process of polymer battery cells, formation is a key process. At present, the formation pressurization mode is single and unchanged, one-section pressurization is carried out, the clamping speed is too high, free electrolyte and gas in the battery core can rapidly impact the aluminum-plastic film sealing part, the aluminum-plastic packaging film can bulge and even impact, and the edge voltage corrosion and leakage safety problems occur. In addition, in the formation charging process, the higher pressure is kept unchanged, and the electrolyte is difficult to absorb, so that the amount of the electrolyte in the battery cell is small, and the cycle performance is poor.
Disclosure of Invention
In order to solve the problems of cell bulging and the like caused by excessively high clamping speed and single pressurizing mode, the invention provides a formation pressurizing method of a polymer cell, which comprises the following steps:
s1, placing the battery cell into formation equipment, and enabling two electrode lugs of the battery cell to contact a charging circuit board;
s2, clamping the battery cell; when the clamping force of the battery cell is smaller than or equal to a preset critical value, the change speed of the clamping force is a first clamping speed; when the clamping force of the battery cell is greater than a preset critical value, the change speed of the clamping force is a second clamping speed until the clamping force reaches a preset target value;
s3, charging the battery cell according to different multiplying power current steps;
and S4, applying formation pressure according to the charging voltage of the battery cell.
Further, in step S2, the method includes the steps of:
s21, when the clamping force of the battery cell is less than or equal to 200kg, the change speed of the clamping force is 0.01-0.5 kg/S;
and S22, when the clamping force of the battery cell is more than 200kg, the change speed of the clamping force is 0.1-20kg/S until the clamping force reaches a preset target value.
Further, in step S3: when the charging voltage is less than or equal to 3.6V, the charging current is 0.01-0.5C; and when the charging voltage is more than 3.6V, the charging current is 0.5-2.0C until the charging voltage reaches the preset target voltage.
Further, in step S3: when the charging voltage is less than 3.7V, the charging current is 0.01-0.5C; when the charging voltage is 3.7-3.9V, the charging current is 0.5-1.5C; when the charging voltage is more than 3.9V, the charging current is 1.5-2.0C.
Further, in step S4, the method further includes:
s41, when the charging voltage is less than 3.0V, the formation pressure is 0.5-1.0 MPa;
s42, when the charging voltage is 3.0-4.0V, the formation pressure is 0.5-2.0 MPa;
s43, when the charging voltage is more than 4.0V, the formation pressure is 0.5-1.0 MPa.
The invention also discloses a formation pressurization system of the polymer battery cell, which comprises:
the initial module is used for placing the battery cell into the formation equipment and enabling two electrode lugs of the battery cell to contact the charging circuit board;
the clamping module is used for clamping the battery cell; when the clamping force of the battery cell is smaller than or equal to a preset critical value, the change speed of the clamping force is a first clamping speed; when the clamping force of the battery cell is greater than a preset critical value, the change speed of the clamping force is a second clamping speed until the clamping force reaches a preset target value;
the charging module is used for charging the battery cell according to different multiplying power current steps;
and the pressurizing module is used for applying formation pressure according to the charging voltage of the battery cell.
Further, the clamping module comprises:
the first clamping unit is used for clamping the battery cell at a first clamping speed; when the clamping force of the battery cell is less than or equal to 200kg, the change speed of the clamping force is 0.01-0.5 kg/s;
the second clamping unit is used for clamping the battery cell at a second clamping speed; when the clamping force of the battery cell is greater than 200kg, the change speed of the clamping force is 0.1-20kg/s until the clamping force reaches a preset target value.
Further, in the charging module, when the charging voltage is less than or equal to 3.6V, the charging current is 0.01-0.5C; and when the charging voltage is more than 3.6V, the charging current is 0.5-2.0C until the charging voltage reaches the preset target voltage.
Further, in the charging module, when the charging voltage is less than 3.7V, the charging current is 0.01-0.5C; when the charging voltage is 3.7-3.9V, the charging current is 0.5-1.5C; when the charging voltage is more than 3.9V, the charging current is 1.5-2.0C.
Further, the pressurizing module includes:
the first pressurizing unit is used for applying a formation pressure of 0.5-1.0MPa to the battery cell when the charging voltage is less than 3.0V;
the second pressurizing unit is used for applying a formation pressure of 0.5-2.0MPa to the battery cell when the charging voltage is 3.0-4.0V;
and the third pressurizing unit is used for applying a formation pressure of 0.5-1.0MPa to the battery cell when the charging voltage is greater than 4.0V.
Compared with the prior art, the invention at least has the following beneficial effects:
(1) the electric core is clamped through a sectional type clamping mode, so that free electrolyte and gas in the electric core can be slowly stressed, the electric core is prevented from rapidly rushing to an aluminum-plastic film sealing position, and the problem that the aluminum-plastic packaging film bulges or even breaks due to too fast clamping is solved.
(2) Through the charging mode of sectional type, according to the size of present voltage, use different charging current for charging current matches with present voltage, avoids leading to electric core to damage because of charging current is too big.
(3) When the voltage is small, the formation pressure is small, and a good SEI interface is favorably formed; along with the increase of the voltage, the formation pressure is increased, the thickness of the battery cell is ensured, and abnormal lithium precipitation is avoided; in the later formation stage, the formation pressure is reduced, the electrode plates of the battery cell absorb the electrolyte, the electrolyte retention capacity is improved, and the circulation capacity is improved.
Drawings
FIG. 1 is a flow chart of a method of formation pressurization in an embodiment.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Referring to fig. 1, the invention discloses a formation pressurization method of a polymer battery cell, which includes:
s1, placing the battery cell into formation equipment, and enabling two electrode lugs of the battery cell to contact a charging circuit board;
s2, clamping the battery cell; when the clamping force of the battery cell is smaller than or equal to a preset critical value, the change speed of the clamping force is a first clamping speed; when the clamping force of the battery cell is greater than a preset critical value, the change speed of the clamping force is a second clamping speed until the clamping force reaches a preset target value; in the present embodiment, the preset target value of the clamping force is 550 kg.
S3, charging the battery cell according to different multiplying power current steps;
and S4, applying formation pressure according to the charging voltage of the battery cell.
Specifically, in step S2, the electric core is clamped in a sectional clamping manner, so that free electrolyte and gas in the electric core can be slowly stressed, the electric core is prevented from rapidly rushing to the aluminum-plastic film sealing position, and the problem that the aluminum-plastic packaging film bulges or even breaks due to too fast clamping is solved.
Further, in step S2, the method includes the steps of:
s21, when the clamping force of the battery cell is less than or equal to 200kg, the change speed of the clamping force is 0.01-0.5 kg/S;
and S22, when the clamping force of the battery cell is more than 200kg, the change speed of the clamping force is 0.1-20kg/S until the clamping force reaches a preset target value.
Specifically, the preset critical value of the clamping force in the embodiment is 200kg, the first clamping speed is 0.01-0.5kg/s, and the second clamping speed is 0.1-20 kg/s; according to the size of current clamp force, change clamp force variation speed to realize the purpose of slowly pressing from both sides tightly, and then avoid aluminium-plastic packaging film bulge or even cracked phenomenon.
Further, in step S3: when the charging voltage is less than or equal to 3.6V, the charging current is 0.01-0.5C; and when the charging voltage is more than 3.6V, the charging current is 0.5-2.0C until the charging voltage reaches the preset target voltage.
Specifically, in this embodiment, different charging currents are used according to the magnitude of the current voltage in a sectional charging manner, so that the charging current is matched with the current voltage, and the damage to the battery cell caused by the overlarge charging current is avoided.
The present embodiment provides another implementation manner, and further in step S3: when the charging voltage is less than 3.7V, the charging current is 0.01-0.5C; when the charging voltage is 3.7-3.9V, the charging current is 0.5-1.5C; when the charging voltage is more than 3.9V, the charging current is 1.5-2.0C.
Further, in step S4, the method further includes:
s41, when the charging voltage is less than 3.0V, the formation pressure is 0.5-1.0 MPa;
s42, when the charging voltage is 3.0-4.0V, the formation pressure is 0.5-2.0 MPa;
s43, when the charging voltage is more than 4.0V, the formation pressure is 0.5-1.0 MPa.
Specifically, when the voltage is small, the formation pressure is small, and a good SEI interface is favorably formed; along with the increase of the voltage, the formation pressure is increased, the thickness of the battery cell is ensured, and abnormal lithium precipitation is avoided; in the later formation stage, the formation pressure is reduced, the electrode plates of the battery cell absorb the electrolyte, the electrolyte retention capacity is improved, and the circulation capacity is improved.
In this embodiment, the voltage of the formed battery cell is 3.5-4.4. V; the formation equipment uses vertical or horizontal equipment, has the pressure speed change function, and adjusts the pressure value according to the formation process step.
The invention also discloses a formation pressurization system of the polymer battery cell, which comprises:
the initial module is used for placing the battery cell into the formation equipment and enabling two electrode lugs of the battery cell to contact the charging circuit board;
the clamping module is used for clamping the battery cell; when the clamping force of the battery cell is smaller than or equal to a preset critical value, the change speed of the clamping force is a first clamping speed; when the clamping force of the battery cell is greater than a preset critical value, the change speed of the clamping force is a second clamping speed until the clamping force reaches a preset target value;
the charging module is used for charging the battery cell according to different multiplying power current steps;
and the pressurizing module is used for applying formation pressure according to the charging voltage of the battery cell.
Further, the clamping module comprises:
the first clamping unit is used for clamping the battery cell at a first clamping speed; when the clamping force of the battery cell is less than or equal to 200kg, the change speed of the clamping force is 0.01-0.5 kg/s;
the second clamping unit is used for clamping the battery cell at a second clamping speed; when the clamping force of the battery cell is greater than 200kg, the change speed of the clamping force is 0.1-20kg/s until the clamping force reaches a preset target value.
Further, in the charging module, when the charging voltage is less than or equal to 3.6V, the charging current is 0.01-0.5C; and when the charging voltage is more than 3.6V, the charging current is 0.5-2.0C until the charging voltage reaches the preset target voltage.
Further, in the charging module, when the charging voltage is less than 3.7V, the charging current is 0.01-0.5C; when the charging voltage is 3.7-3.9V, the charging current is 0.5-1.5C; when the charging voltage is more than 3.9V, the charging current is 1.5-2.0C.
Further, the pressurizing module includes:
the first pressurizing unit is used for applying a formation pressure of 0.5-1.0MPa to the battery cell when the charging voltage is less than 3.0V;
the second pressurizing unit is used for applying a formation pressure of 0.5-2.0MPa to the battery cell when the charging voltage is 3.0-4.0V;
and the third pressurizing unit is used for applying a formation pressure of 0.5-1.0MPa to the battery cell when the charging voltage is greater than 4.0V.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Claims (10)
1. A method for forming and pressurizing a polymer cell, comprising:
s1, placing the battery cell into formation equipment, and enabling two electrode lugs of the battery cell to contact a charging circuit board;
s2, clamping the battery cell; when the clamping force of the battery cell is smaller than or equal to a preset critical value, the change speed of the clamping force is a first clamping speed; when the clamping force of the battery cell is greater than a preset critical value, the change speed of the clamping force is a second clamping speed until the clamping force reaches a preset target value;
s3, charging the battery cell according to different multiplying power current steps;
and S4, applying formation pressure according to the charging voltage of the battery cell.
2. The method of claim 1, wherein in step S2, the method includes the steps of:
s21, when the clamping force of the battery cell is less than or equal to 200kg, the change speed of the clamping force is 0.01-0.5 kg/S;
and S22, when the clamping force of the battery cell is more than 200kg, the change speed of the clamping force is 0.1-20kg/S until the clamping force reaches a preset target value.
3. The method of claim 1, wherein in step S3: when the charging voltage is less than or equal to 3.6V, the charging current is 0.01-0.5C; and when the charging voltage is more than 3.6V, the charging current is 0.5-2.0C until the charging voltage reaches the preset target voltage.
4. The method of claim 1, wherein in step S3: when the charging voltage is less than 3.7V, the charging current is 0.01-0.5C; when the charging voltage is 3.7-3.9V, the charging current is 0.5-1.5C; when the charging voltage is more than 3.9V, the charging current is 1.5-2.0C.
5. The method of claim 1, wherein in step S4, the method further comprises:
s41, when the charging voltage is less than or equal to 3.0V, the formation pressure is 0.5-1.0 MPa;
s42, when the charging voltage is 3.0-4.0V, the formation pressure is 0.5-2.0 MPa;
s43, when the charging voltage is more than or equal to 4.0V, the formation pressure is 0.5-1.0 MPa.
6. A system for formation pressurization of polymer cells, comprising:
the initial module is used for placing the battery cell into the formation equipment and enabling two electrode lugs of the battery cell to contact the charging circuit board;
the clamping module is used for clamping the battery cell; when the clamping force of the battery cell is smaller than or equal to a preset critical value, the change speed of the clamping force is a first clamping speed; when the clamping force of the battery cell is greater than a preset critical value, the change speed of the clamping force is a second clamping speed until the clamping force reaches a preset target value;
the charging module is used for charging the battery cell according to different multiplying power current steps;
and the pressurizing module is used for applying formation pressure according to the charging voltage of the battery cell.
7. The system of claim 6, wherein the clamping module comprises:
the first clamping unit is used for clamping the battery cell at a first clamping speed; when the clamping force of the battery cell is less than or equal to 200kg, the change speed of the clamping force is 0.01-0.5 kg/s;
the second clamping unit is used for clamping the battery cell at a second clamping speed; when the clamping force of the battery cell is greater than 200kg, the change speed of the clamping force is 0.1-20kg/s until the clamping force reaches a preset target value.
8. The system of claim 6, wherein in the charging module, when the charging voltage is less than or equal to 3.6V, the charging current is 0.01-0.5C; and when the charging voltage is more than 3.6V, the charging current is 0.5-2.0C until the charging voltage reaches the preset target voltage.
9. The system of claim 6, wherein in the charging module, when the charging voltage is less than 3.7V, the charging current is 0.01-0.5C; when the charging voltage is 3.7-3.9V, the charging current is 0.5-1.5C; when the charging voltage is more than 3.9V, the charging current is 1.5-2.0C.
10. The system of claim 7, wherein the pressurization module comprises:
the first pressurizing unit is used for applying a formation pressure of 0.5-1.0MPa to the battery cell when the charging voltage is less than or equal to 3.0V;
the second pressurizing unit is used for applying a formation pressure of 0.5-2.0MPa to the battery cell when the charging voltage is 3.0-4.0V;
and the third pressurizing unit is used for applying a formation pressure of 0.5-1.0MPa to the battery cell when the charging voltage is greater than or equal to 4.0V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110718494.7A CN113675487A (en) | 2021-06-28 | 2021-06-28 | Formation pressurization method and system of polymer battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110718494.7A CN113675487A (en) | 2021-06-28 | 2021-06-28 | Formation pressurization method and system of polymer battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113675487A true CN113675487A (en) | 2021-11-19 |
Family
ID=78538408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110718494.7A Pending CN113675487A (en) | 2021-06-28 | 2021-06-28 | Formation pressurization method and system of polymer battery cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113675487A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116749572A (en) * | 2023-05-31 | 2023-09-15 | 厦门合南道智能科技有限公司 | Cell pressurizing mechanism and control method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017047064A1 (en) * | 2015-09-16 | 2017-03-23 | 日本電気株式会社 | Secondary battery, electrical storage system, and charging/discharging method |
| CN106785072A (en) * | 2017-03-20 | 2017-05-31 | 欣旺达电子股份有限公司 | Temperature-pressure formation device, chemical synthesizing method and formation cabinet |
| CN107579302A (en) * | 2017-10-13 | 2018-01-12 | 骆驼集团新能源电池有限公司 | A kind of Soft Roll lithium ion power battery core rapid forming method |
| CN108110350A (en) * | 2017-12-18 | 2018-06-01 | 惠州Tcl金能电池有限公司 | Lithium ion battery pressure chemical synthesizing method |
| CN110323481A (en) * | 2019-04-29 | 2019-10-11 | 宜宾茂泰业科技股份有限公司 | A kind of hot pressing chemical synthesizing method of high magnification soft-package battery |
| CN111430822A (en) * | 2020-03-26 | 2020-07-17 | 信义电源(苏州)有限公司 | Lithium battery formation method |
| CN111564674A (en) * | 2019-02-14 | 2020-08-21 | 江西格林德能源有限公司 | Soft package lithium battery core formation process |
| CN111934019A (en) * | 2020-06-29 | 2020-11-13 | 宁波新思创机电科技股份有限公司 | Rapid formation method of power soft-package polymer lithium ion battery |
| CN112216889A (en) * | 2020-10-13 | 2021-01-12 | 深圳市启明新能源科技有限公司 | Formation method of polymer lithium ion battery |
| CN112820944A (en) * | 2021-01-05 | 2021-05-18 | 南通鼎鑫电池有限公司 | Polymer lithium cell pressurization becomes equipment |
-
2021
- 2021-06-28 CN CN202110718494.7A patent/CN113675487A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017047064A1 (en) * | 2015-09-16 | 2017-03-23 | 日本電気株式会社 | Secondary battery, electrical storage system, and charging/discharging method |
| CN106785072A (en) * | 2017-03-20 | 2017-05-31 | 欣旺达电子股份有限公司 | Temperature-pressure formation device, chemical synthesizing method and formation cabinet |
| CN107579302A (en) * | 2017-10-13 | 2018-01-12 | 骆驼集团新能源电池有限公司 | A kind of Soft Roll lithium ion power battery core rapid forming method |
| CN108110350A (en) * | 2017-12-18 | 2018-06-01 | 惠州Tcl金能电池有限公司 | Lithium ion battery pressure chemical synthesizing method |
| CN111564674A (en) * | 2019-02-14 | 2020-08-21 | 江西格林德能源有限公司 | Soft package lithium battery core formation process |
| CN110323481A (en) * | 2019-04-29 | 2019-10-11 | 宜宾茂泰业科技股份有限公司 | A kind of hot pressing chemical synthesizing method of high magnification soft-package battery |
| CN111430822A (en) * | 2020-03-26 | 2020-07-17 | 信义电源(苏州)有限公司 | Lithium battery formation method |
| CN111934019A (en) * | 2020-06-29 | 2020-11-13 | 宁波新思创机电科技股份有限公司 | Rapid formation method of power soft-package polymer lithium ion battery |
| CN112216889A (en) * | 2020-10-13 | 2021-01-12 | 深圳市启明新能源科技有限公司 | Formation method of polymer lithium ion battery |
| CN112820944A (en) * | 2021-01-05 | 2021-05-18 | 南通鼎鑫电池有限公司 | Polymer lithium cell pressurization becomes equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116749572A (en) * | 2023-05-31 | 2023-09-15 | 厦门合南道智能科技有限公司 | Cell pressurizing mechanism and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11769925B2 (en) | Battery module having initial pressing force reinforcing structure for cell assembly and method of manufacturing the same | |
| CN112005461B (en) | Device for charging and discharging secondary battery | |
| US10897066B2 (en) | Battery cell capable of measuring inner temperature thereof | |
| CN105470441A (en) | Bus bar module | |
| CN105981196A (en) | Pouch-type secondary battery including sealing part having recess | |
| US8435669B2 (en) | Electro-chemical device and method for manufacturing the same | |
| CN104795527A (en) | Battery module | |
| US20240178530A1 (en) | Method for producing battery module | |
| CN106207016A (en) | Power battery | |
| US20220006115A1 (en) | Battery, electric apparatus, and cell installation method | |
| CN102938470A (en) | Connecting method of inspecting lines of metal bipolar plate fuel cell stack | |
| EP3933969B1 (en) | Negative electrode plate, lithium secondary battery, and apparatus containing such lithium secondary battery | |
| JP2007242424A (en) | Bipolar battery | |
| JP2006120577A (en) | Polymer battery | |
| US11855297B2 (en) | Battery unit, battery, and electric apparatus | |
| DE102014200197A1 (en) | Battery cell with increased safety and procedures | |
| US12113185B2 (en) | Diagnostic device for secondary battery and recovery method for secondary battery | |
| KR101626064B1 (en) | Secondary battery and method for manufacturing the same | |
| CN113675487A (en) | Formation pressurization method and system of polymer battery cell | |
| CN114788072A (en) | Battery system | |
| US20140023913A1 (en) | Prismatic secondary battery | |
| CN103022553A (en) | Overlapped type lithium ion battery | |
| CN104659329A (en) | Secondary battery | |
| KR102709972B1 (en) | Housing, restoration method thereof, related secondary batteries, battery modules, battery packs and electrical devices | |
| CN217719740U (en) | Battery and power consumption device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211119 |