Secondary battery top cover and secondary battery

A secondary battery and top cover technology, applied in the field of energy storage devices, can solve the problems of top cover sheet melting, poor toughness and bending resistance, poor consistency, etc., to protect the flip sheet and top cover, and have good high temperature resistance performance. , the effect of improving safety performance
CN108110159BActive Publication Date: 2021-03-30江西百思利新能源科技股份有限公司
8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
江西百思利新能源科技股份有限公司
Publication Date
2021-03-30

Smart Images

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

Abstract

The invention provides a secondary battery top cover, comprising: a top cover sheet and a first electrode unit, a second electrode unit and a flipping sheet arranged on the top cover sheet, the first electrode unit includes a first pole and a resistor arranged on the first pole, the first pole is electrically connected to the top cover sheet through the resistor, the second electrode unit includes a second pole and a conductive sheet electrically connected to the second pole, the second pole is connected to the second pole The top cover is insulated and assembled, the overturning piece is electrically connected to the top cover, the conductive piece is located above the overturning piece, and the resistor has conductive filler and adhesive. When an accident happens to the battery, the first electrode unit and the second electrode unit are electrically connected to form an external short circuit due to the action of the flipping sheet and the electrical connection of the resistance to the first electrode and the top cover sheet, because the conductive filler and adhesive are used. Resistance, the resistance of the resistance is stable, and the contact resistance is small, which can well control the magnitude of the current, thereby improving the safety performance of the battery.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of energy storage devices, in particular to a secondary battery top cover and the secondary battery. Background technique

[0002] In modern society, more and more driving power sources of electric tools and new energy vehicles are developing in the direction of high capacity and high safety. Batteries are widely used in electric tools and new energy vehicles due to their excellent characteristics such as high capacity . In addition to high capacity, these batteries should also have good safety in order to meet the standard bricks used and meet people's needs.

[0003] In order to ensure the safety of the secondary battery, some batteries in the prior art are equipped with a flip sheet on the top cover, and the first electrode and the top cover sheet are electrically connected by setting a resistor, so that the battery will not be damaged due to accidents such as overcharging or electrolyte reaction. When the air pr...

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