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Furnace for producing secondary battery positive electrode material and method for firing secondary battery positive electrode material

A technology for positive electrode materials and secondary batteries, which is applied in the direction of secondary batteries, battery electrodes, positive electrodes, etc., can solve the problems such as the decrease in the reaction rate of positive electrode materials, and achieve the effects of increasing reaction rate, increasing productivity, and shortening calcination time

Pending Publication Date: 2021-08-10
浦项控股股份有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In addition, if the filling amount of the positive electrode material is increased in the RHK calciner, the positive electrode powder and the lithium source mixed powder will generate reaction gas, and when the reaction gas is not discharged and remains, the reaction rate of the positive electrode material will decrease

Method used

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  • Furnace for producing secondary battery positive electrode material and method for firing secondary battery positive electrode material
  • Furnace for producing secondary battery positive electrode material and method for firing secondary battery positive electrode material
  • Furnace for producing secondary battery positive electrode material and method for firing secondary battery positive electrode material

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Embodiment Construction

[0024] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present invention pertains can easily implement the present invention. The present invention can be implemented in various ways and is not limited to the embodiments described herein.

[0025] figure 1 is a structural diagram of a calciner (hereinafter referred to as "calciner") for preparing anode materials for secondary batteries according to an embodiment of the present invention. figure 2 , image 3 with Figure 4 respectively figure 1 Cross-sectional views of the front, middle and rear chambers of the calciner shown.

[0026] see Figure 1 to Figure 4 , the calciner 100 comprises: a chamber 10, the inner space of which is heated by a heater 21; a conveying unit 30, which is arranged inside the chamber 10, and is used to convey the refractory sagger containing the raw material powder o...

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Abstract

A furnace for producing a secondary battery positive electrode material, according to one embodiment of the present invention, comprises: a chamber having the inside space thereof heated by a heater; a transfer part for transferring, in one direction, a saggar installed inside the chamber and containing raw material powder of a secondary battery positive electrode material; and an air supply nozzle and an exhaust port installed on the chamber. The chamber is divided into a front chamber, a middle chamber and a rear chamber. The middle chamber has an entrance shutter and an exit shutter for sealing off the inside space thereof, and the exhaust port of the middle chamber is connected to an exhaust apparatus for exhausting gas.

Description

technical field [0001] The invention relates to a calcining furnace for preparing positive electrode materials (positive electrode active materials) of secondary batteries and a method for calcining the positive electrode materials of secondary batteries using the calcining furnace. Background technique [0002] Among secondary batteries, a lithium secondary battery using lithium has advantages such as high energy density, excellent output characteristics, and light weight. Lithium secondary batteries mainly use LiCoO 2 As a cathode material, recently, in order to replace expensive cobalt and increase the capacity per unit weight, NCM series cathode materials containing nickel, cobalt, and manganese are being studied. [0003] The preparation process of the positive electrode material includes the process of calcining a refractory sagger containing raw material powder at a temperature of about 400° C. to 1100° C. in a calciner according to the characteristics of the raw mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B9/02F27B9/04F27B9/24F27B9/30F27D7/04
CPCF27D7/04F27B9/04F27B9/02F27B9/24F27B9/30F27B9/20F27B17/0016F27B2017/0091Y02E60/10Y02P70/50F27B9/028F27B9/045F27B9/2407F27B9/3011F27D2007/045F27B9/3077F27D7/02F27D17/002F27D2007/026H01M4/505H01M4/525H01M10/0525H01M2004/028
Inventor 郑淇荣梁忠模朴允澈黄淳徹金永雨朴永敏
Owner 浦项控股股份有限公司
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