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Lithium ion battery cell and method of manufacturing same

A technology of lithium-ion battery packs and battery packs, applied in the direction of battery/battery traction, electrode manufacturing, battery electrodes, etc., which can solve the problems of lithium ion insertion and removal (difficult transfer, accelerated electrolyte oxidation, etc.)

Pending Publication Date: 2021-01-29
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Charging a Li-ion battery cell at a relatively high voltage may also accelerate the oxidation of the electrolyte on the cathode surface, where reaction products may accumulate on the electrode, making insertion (intercalation) and deintercalation (transfer) of lithium ions difficult

Method used

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  • Lithium ion battery cell and method of manufacturing same
  • Lithium ion battery cell and method of manufacturing same
  • Lithium ion battery cell and method of manufacturing same

Examples

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Embodiment Construction

[0032] exist figure 1 The motor vehicle 2 shown in is electrically driven. For this purpose, the motor vehicle 2 has an electric machine 4 which is connected to a traction battery 8 via an inverter 6 . The traction battery 8 has a plurality of battery cells 10 which are connected to each other and to the inverter 8 . In this case, only two of the lithium-ion battery cells 10 are shown for the sake of clarity.

[0033] In each of these lithium-ion battery cells 10, anodes 12 and cathodes 14 are stacked alternately one above the other, wherein a separator 16 is respectively arranged between the anodes 12 and cathodes 14, so that the anodes 12 and the cathodes 14 are spatially separated from each other. exist figure 1 In , the membrane 16 is shaded and comprises, for example, polyethylene and / or polypropylene.

[0034] Each of these anodes 12 has an anode foil, for example in the form of a copper foil, as a current collector 12a, which is coated with an anode active material...

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PUM

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Abstract

A lithium ion battery cell and a method of manufacturing the same. The invention relates to a lithium ion battery cell (10) having a cathode (14), which has a current collector (14a) and LiNi0.5Mn1.5O4 applied to the current collector (14a) as a cathode active material (14b), a first layer (18) consisting of a lithium niobium oxide being applied to the cathode active material (14b), and wherein asecond layer (20) made of lithium phosphate is applied to the first layer (20). The invention also relates to a method of manufacturing such a lithium-ion battery cell (10) and to an electrically driven motor vehicle (2).

Description

technical field [0001] The present invention relates to a lithium-ion battery cell having a cathode having a LiNi 0.5 mn 1.5 o 4 as cathode active material. The invention also relates to a method for producing such a lithium-ion battery cell. Background technique [0002] Lithium-ion battery cells (Li-ion battery cells) have a plurality of anodes and cathodes, a separator being arranged in each case between the anodes and the cathodes. In this case, the anode and the cathode generally each have a current collector, in particular a foil-shaped current collector, which has an active material (electrode material) applied thereto, into which lithium ions can be intercalated (intercalated) and Lithium ions can be deintercalated (transferred) from the active material. The battery cell also has an electrolyte with a conductive salt dissolved in it, such as LiPF 6 (lithium hexafluorophosphate); ethylene carbonate with a solvent such as propylene carbonate; and if necessary wit...

Claims

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Application Information

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IPC IPC(8): H01M4/131H01M4/1391H01M4/505H01M4/525H01M4/04H01M10/0525B60L50/60B60L50/64
CPCH01M4/131H01M4/1391H01M4/505H01M4/525H01M4/0404H01M10/0525B60L50/60B60L50/64H01M2004/027Y02T10/70H01M4/366H01M4/0421Y02E60/10
Inventor E·约希勒T·施拉特
Owner VOLKSWAGEN AG