Method and device for preparing battery pole piece

A technology for battery pole pieces and preparation devices, which can be applied in electrode manufacturing, devices for coating liquid on surfaces, special surfaces, etc. problem, to achieve the effect of low micro-short-circuit rate, improved performance, and good self-discharge performance
CN101615667BActive Publication Date: 2012-01-04SHANGHAI BYD
4 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI BYD
Publication Date
2012-01-04

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a method for preparing a battery pole piece. The method comprises the following steps: coating pole slurry on a current collecting body; and vibrating the obtained current collecting body coated with the pole slurry on the surface. The invention provides a device for preparing the battery pole piece. The device comprises a coating device and a vibrating device, wherein the pole slurry is coated on the surface of the current collecting body by the coating device, and the vibrating device is used for vibrating the current collecting body coated with the pole slurry on thesurface. After being placed in a room with the temperature of 20+ / -2 DEG C and the humidity of 20 percent-50 percent for 28 days in an open circuit, a battery with the volume of 4.2 V, which is prepared by the battery pole piece prepared by the device and the method, reduces the voltage by 5 mV at most, and the micro-short circuit rate tested by 20,000 batteries is 0.01 percent; and the battery prepared by a device and a method in the prior art has the voltage reduction up to 50 mV and the micro-short circuit rate of 0.05 percent under the completely same condition.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for preparing battery pole pieces and a device for realizing the method. Background technique

[0002] In the existing production of battery pole pieces, the commonly used devices include a coating device and a drying device for coating the electrode slurry on the surface of the current collector. Therefore, the method of using this device to prepare battery pole pieces is usually to first roll the electrode slurry on the current collector through a coating device attached to the electrode slurry, such as a coating wheel attached to the electrode slurry, or manually apply the electrode slurry coated on the current collector, wherein the electrode slurry is a slurry containing active material and binder. After the coating, the obtained current collector whose surface is coated with the electrode slurry is then dried by a drying device. Although this production method has a simple process, the battery pole piece prepar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More