Lithium ion battery and manufacturing method thereof
A technology of batteries and electrolytes, applied in secondary battery manufacturing, lithium batteries, battery electrodes, etc.
Pending Publication Date: 2022-03-01
I TEN
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- Description
- Claims
- Application Information
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Problems solved by technology
Therefore, the architecture according to the prior art has certain technical as well as economical disadvantages
Method used
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[0071] The method according to the invention firstly comprises a step in which a stack I of alternating foils is produced, which are referred to hereinafter as “anode foils” 2 or “cathode foils” 5 as the case may be. As will be seen in more detail, each anode foil 2 is used to form the anodes of several batteries and each cathode foil 5 is used to form the cathodes of several batteries. exist figure 1 In the example shown, two notched cathode foils 5e and two notched anode foils 2e are shown. In practice, the stack is formed of a greater number of foils, usually comprising a number between tens and thousands of foils. The number of notched cathode foils 5e used to constitute the stack I of alternating foils of opposite polarity is the same as the number of notched anode foils 2e.
[0072] In an advantageous embodiment, each of these foils has perforations 7 at its four ends, so that when these perforations 7 are superimposed, all cathodes and all anodes of these foils are ar...
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Abstract
A battery (1000) comprising a base unit (100) comprising in order a planar anode current collector substrate (10), an anode layer (20), an electrolyte material layer (30) or a separator layer (31) impregnated with an electrolyte, a cathode layer (50), and a planar cathode current collector substrate (40), the battery (1000) further comprising longitudinal edges (1011, 1012), a first lateral edge (1001) comprising an anode connection region (1002), and a second lateral edge (1005) comprising a cathode connection region (1006), the second lateral edge (1005) includes a cathode connection region (1006). Each basic unit (100) comprises a main body (111), a secondary body (112) and a tertiary body (113), and the secondary body and the tertiary body are arranged on the two sides of the main body respectively. Each of the main body (111), the secondary body (112) and the tertiary body (113) sequentially comprises a planar anode current collector substrate (10), an anode layer (20), an electrolyte material layer (30) or a diaphragm layer (31) impregnated with electrolyte, a cathode layer (50) and a planar cathode current collector substrate (40). The secondary body (112) is separated from the primary body (111) by a notch (120), the notch (120) being free of any anode material, electrolyte material, cathode material, and anode current collector substrate material. The notch extends from a longitudinal edge (1011) of the cell to an opposite longitudinal edge (1012) in a direction perpendicular to a main plane of the cell. The tertiary body (113) is separated from the main body (111) by a recess (130) free of any anode material, electrolyte material, cathode material, and cathode current collector substrate material. The recess (130) extends from a longitudinal edge (1011) of the cell to an opposite longitudinal edge (1012) in a direction perpendicular to a main plane of the cell.
Description
technical field [0001] The invention relates to the field of batteries, in particular to lithium ion batteries. The present invention relates to a lithium-ion battery with a new architecture that extends the life of the lithium-ion battery. The invention also relates to a new method for manufacturing such batteries. Background technique [0002] All solid state lithium ion rechargeable batteries are known. WO2016 / 001584 (I-TEN) describes a Li-ion battery manufactured from an anode foil comprising a conductor substrate sequentially covered by an anode layer and an electrolyte layer, and a cathode foil comprising a conductor sequentially covered by a cathode layer and an electrolyte layer Substrates; these foils are cut according to a U-shaped pattern, either before or after deposition. These foils are then stacked alternately in order to form a stack of several basic cells / battery cells. The cutting patterns of the anode and cathode foils are placed "end to end" such that...
Claims
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IPC IPC(8): H01M10/0585H01M10/0525H01M4/66H01M4/72H01M50/121H01M50/209H01M50/534
CPCH01M10/0585H01M10/0525H01M4/667H01M4/72H01M10/4235H01M10/0436H01M10/052H01M50/209Y02E60/10Y02P70/50H01M50/534H01M50/121H01M4/70
Inventor 法比安·加邦
Owner I TEN