Laminated type lithium battery core body with extremely high bearing capacity and packaging technique

Abstract

The invention discloses a laminated type lithium battery core body with extremely high bearing capacity and a packaging technique. The battery core body comprises a plurality of battery core pole pieces subjected to lamination, conducting gaskets and two tabs, wherein the conducting gaskets are welded and fixed on the battery core pole pieces; the plurality of battery core pole pieces are stackedin a side-by-side manner from top to bottom and form the core body after being compacted; and the adjacent battery core pole pieces are isolated by a battery core diaphragm. The packaging technique comprises the steps of: 1, lamination of the battery core pole pieces; 2, welding of the conducting gaskets; 3, stacking of the battery core pole pieces; 4, assembly and welding of the conducting gaskets and installation of the tabs; 5, compaction of the battery core body; 6, package of aluminum and plastic membranes; 7, injection of an electrolyte; 8, vacuum packaging under normal temperature or alow temperature; and 9, thermal-plastic packaging. In the laminated type lithium battery core body, the design is reasonable, the structure is simple, the processing and manufacture are convenient, the manufactured lithium battery core body has extremely high vacuum degree and bearing capacity, and the defects that the existing lithium battery core is poor in bearing capacity and short in servicelife and the like when being used for manufacturing a deep-sea direct-dipping battery are overcome.

Description

technical field

[0001] The invention belongs to the technical field of deep-sea direct immersion lithium battery pack manufacturing, and in particular relates to a laminated lithium battery core with extremely high pressure bearing capacity and a packaging process. Background technique

[0002] With its rich resources, vast space and great regulating effect on the earth's environment and climate, the ocean has become an important part of the global life support system and a valuable asset for the sustainable development of human beings. Marine technology is the premise and main means for revealing the mysteries of the ocean, safeguarding marine rights and interests, developing marine resources, protecting the marine environment, and mitigating marine disasters. Due to the unique role of the ocean and its strategic position in the sustainable development of the country, the country has invested a lot of manpower and financial resources in the research and development of marin...

Examples

Embodiment 1

[0062] like figure 1 , figure 2 , image 3 and Figure 4 As shown, the laminated lithium battery core with extremely high pressure bearing capacity described in the present invention includes two tabs, multiple structures that are all the same, and are all pressed and formed by rolling equipment under a pressure of 10MPa to 120MPa. The pole piece of the battery cell and the conductive gasket respectively welded and fixed on the upper side or the lower side of one end of each pole piece of the battery cell, and each pole piece of the battery cell and the conductive gasket arranged on it constitute an electrode chip. A plurality of the electrode chips are stacked side by side from top to bottom and compacted in the vertical direction of the electrode chips by pressing equipment from top to bottom to form a battery core, and the gap between two adjacent electrode chips is Isolation is carried out by a layer of cell diaphragm 4, and the pressing pressure during the pressing an...

Embodiment 2

[0102] like Figure 8 , Figure 9 As shown, in this embodiment, the structure of the laminated lithium battery core with extremely high pressure bearing capacity is different from that of Example 1 in that: the two tabs are respectively arranged on the left and right sides of the battery core On both sides, the conductive pads B2-2 welded on the plurality of cell pole pieces B1-2 are arranged on the other end of the lithium battery core to be made, that is to say, the conductive pads A2-1 and the conductive pads Sheets B2-2 are respectively arranged on the opposite sides of the battery core, so that the Figure 9 The shown lithium battery with the tabs located on opposite sides; in addition, the multi-layer cell diaphragm 4 is composed of multiple cell diaphragms 4, and each layer of cell diaphragm 4 corresponds to a cell diaphragm 4, and each layer The structure and size of the cell separator 4 are the same as those of the cell pole pieces. In this embodiment, the rest of ...

technical field

[0001] The invention belongs to the technical field of deep-sea direct immersion lithium battery pack manufacturing, and in particular relates to a laminated lithium battery core with extremely high pressure bearing capacity and a packaging process. Background technique

[0002] With its rich resources, vast space and great regulating effect on the earth's environment and climate, the ocean has become an important part of the global life support system and a valuable asset for the sustainable development of human beings. Marine technology is the premise and main means for revealing the mysteries of the ocean, safeguarding marine rights and interests, developing marine resources, protecting the marine environment, and mitigating marine disasters. Due to the unique role of the ocean and its strategic position in the sustainable development of the country, the country has invested a lot of manpower and financial resources in the research and development of marin...

Examples

Embodiment 1

[0062] like figure 1 , figure 2 , image 3 and Figure 4 As shown, the laminated lithium battery core with extremely high pressure bearing capacity described in the present invention includes two tabs, multiple structures that are all the same, and are all pressed and formed by rolling equipment under a pressure of 10MPa to 120MPa. The pole piece of the battery cell and the conductive gasket respectively welded and fixed on the upper side or the lower side of one end of each pole piece of the battery cell, and each pole piece of the battery cell and the conductive gasket arranged on it constitute an electrode chip. A plurality of the electrode chips are stacked side by side from top to bottom and compacted in the vertical direction of the electrode chips by pressing equipment from top to bottom to form a battery core, and the gap between two adjacent electrode chips is Isolation is carried out by a layer of cell diaphragm 4, and the pressing pressure during the pressing an...

Embodiment 2

[0102] like Figure 8 , Figure 9 As shown, in this embodiment, the structure of the laminated lithium battery core with extremely high pressure bearing capacity is different from that of Example 1 in that: the two tabs are respectively arranged on the left and right sides of the battery core On both sides, the conductive pads B2-2 welded on the plurality of cell pole pieces B1-2 are arranged on the other end of the lithium battery core to be made, that is to say, the conductive pads A2-1 and the conductive pads Sheets B2-2 are respectively arranged on the opposite sides of the battery core, so that the Figure 9 The shown lithium battery with the tabs located on opposite sides; in addition, the multi-layer cell diaphragm 4 is composed of multiple cell diaphragms 4, and each layer of cell diaphragm 4 corresponds to a cell diaphragm 4, and each layer The structure and size of the cell separator 4 are the same as those of the cell pole pieces. In this embodiment, the rest of ...

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