Battery pole sheet heating system and heating method

A battery pole piece and heating system technology, applied in the direction of electrode heat treatment, electrode manufacturing, induction heating, etc., can solve the problems of aluminum foil burning edge heating, low compaction density, failure, etc., achieve uniform heating, avoid uneven heating, The effect of maintaining stability

Pending Publication Date: 2019-12-27
SHENZHEN YINGHE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the existing rolling production process of lithium battery pole pieces, the forced stretching method is used to ensure that the extension of the aluminum foil and the coated area is basically the same.
The disadvantages of this method are: the aluminum foil is required to have high tensile strength and no fine gaps are allowed on the

Method used

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  • Battery pole sheet heating system and heating method
  • Battery pole sheet heating system and heating method
  • Battery pole sheet heating system and heating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] see figure 1 and figure 2 As shown, the battery pole piece heating system of the present invention includes an electromagnetic heater 1 and a temperature sensor 2 .

[0038] Wherein, the electromagnetic heater 1 includes an electromagnetic heating head 11 and a power controller 12; the power controller 12 is connected to an external power source. The power controller 12 controls and connects the electromagnetic heating head 11, that is, the power controller 12 can transmit high-frequency high-voltage power to the electromagnetic heating head 11 and the frequency and voltage of the transmitted current can be adjusted, so that the power controller 12 The electromagnetic heating head 11 can be controlled to generate a magnetic field. Moreover, the power controller 12 is provided with a control panel, which can directly perform manual debugging and setting.

[0039] When working, the power controller 12 connects the external power supply, rectifies the alternating curre...

Embodiment 2

[0053] The heating system of the above-mentioned embodiment 1 is used to heat the battery pole piece 3. The base material of the battery pole piece 3 is aluminum foil. In a specific application, the heating system centrally heats the blank area 301 of the battery pole piece 3, so that The blank area 301 generates a high temperature, while the coated area 302 generates a low temperature.

[0054] Specifically, the following steps are included:

[0055] S1. The electromagnetic heater 1 is arranged below the battery pole piece 3, and the temperature sensor 2 is arranged above the battery pole piece 3. The electromagnetic heater 1 and the temperature sensor 2 correspond to each other.

[0056] Wherein, the electromagnetic heating head 11 of the electromagnetic heater 1 and the temperature sensor 2 both correspond to the blank area of ​​the battery pole piece 3; Directly below the area 301 , wherein both the electromagnetic heating head 11 and the temperature sensor 2 correspond t...

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PUM

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Abstract

The invention discloses a battery pole sheet heating system and a battery pole sheet heating method. The heating system comprises an electromagnetic heater (1) and a temperature sensor (2); the electromagnetic heater (1) comprises an electromagnetic heating head (11) and a power source controller (12); the power source controller (12) is externally connected with a power source; the power source controller (12) is in control connection with the electromagnetic heating head (11); the temperature sensor (2) and the electromagnetic heating head (11) correspond to each other and are respectively distributed on the upper side and lower side of a battery pole sheet; the power source controller (12) can control the electromagnetic heating head (11) to generate a magnetic field; the battery pole sheet can move to cut the magnetic induction lines of the magnetic field to generate heat; the temperature sensor (2) is used for detecting the temperature of the battery pole sheet; and the temperature sensor (2) is connected with the power source controller (12). Based on the heating mode of the heating system, the battery pole sheet can be uniformly heated, and the phenomenon of non-uniform heating is avoided.

Description

technical field [0001] The invention relates to the technical field of lithium battery production, in particular to a battery pole piece heating system and a heating method. Background technique [0002] Aluminum foil is usually used as the base material of positive electrode sheet of lithium battery. In the rolling production of lithium batteries, due to the inconsistent elongation of the coated area of ​​the pole piece and the aluminum foil, there will be folding of the aluminum foil, which will lead to the broken strip of the pole piece, which will not be able to produce normally and affect the product quality. Therefore, it is necessary to heat and soften the pole piece base material of the lithium battery, so as to facilitate the stretching and wrinkle removal of the pole piece, and ensure that the extension of the aluminum foil and the coating area is basically consistent. [0003] However, in the existing rolling production process of lithium battery pole pieces, a f...

Claims

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Application Information

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IPC IPC(8): H05B6/02H05B6/06H05B6/10H05B6/36H01M4/04
CPCH01M4/0435H01M4/0471H05B6/02H05B6/06H05B6/10H05B6/36Y02E60/10
Inventor 周三春杨振胡姜耀文
Owner SHENZHEN YINGHE TECH
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