Winding type negative pole plate, battery cell comprising same and lithium paste battery
A technology of slurry battery and negative electrode sheet, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problem of small ratio of current conduction area to electrode reaction area, poor battery heat dissipation performance and high-rate discharge performance, and poor battery connection. Convenience and other issues to achieve the effect of improving production efficiency, improving work performance and safety, and avoiding heat
Active Publication Date: 2017-10-31
南京竞予能源有限公司
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Problems solved by technology
At present, most winding lithium batteries use a positive terminal and a negative terminal on the same side of the battery for conduction, which is easy to cause: (1) For a lithium slurry battery with a large electrode reaction area inside the battery, a positive terminal and a negative terminal are used. One negative terminal carries current, the ratio of the current conduction area to the electrode reaction area is small, and the heat dissipation performance and high-rate discharge performance of the battery are poor; Assembly inconvenience and increased risk of short circuit due to direct contact between positive and negative terminals
Method used
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Embodiment Construction
[0067] The present invention will be further described through embodiments below in conjunction with the accompanying drawings.
[0068] figure 1 According to the wound lithium slurry battery 1 of the present invention, the battery includes a battery case 2, a positive terminal 3, a negative terminal 4, a cell 5, a liquid injection port 6 and an electrolyte. Wherein, the battery cell 5 is arranged in the battery case 2, a plurality of positive pole tabs of the battery cell 5 are electrically connected to the positive terminal 3, a plurality of negative pole tabs of the battery cell 5 are electrically connected to the negative terminal 4, and the positive terminal 3 and the negative pole The terminal 4 protrudes from the battery case 2 and is fluid-tight with the battery case 2 . The electrolyte solution is injected into the battery casing 2 through the liquid injection port 6, so that the battery cell 5 is placed in the electrolyte solution.
[0069] figure 2 , image 3 I...
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Abstract
The invention provides a negative pole plate of a lithium paste battery. The negative pole plate is formed with a plurality of linear parts and a plurality of bending parts by a winding mode, the winding employs a spiral or arched mode, gaps are formed among the linear parts and are used for accommodating positive pole plates of a semi-solid lithium paste battery, the negative pole plate comprises a porous structure body and a plurality of lithium-containing metal bodies, and the lithium-containing metal bodies are connected to the porous structure body in an interval isolation way so that each lithium-containing metal body is arranged in each linear part after the negative pole plate is wound. With the adoption of the winding type negative pole plate, the fabrication efficiency of the semi-solid lithium paste battery can be effectively improved; meanwhile, the problems that an electrode is broken and conductive paste is leaked caused by winding of a sandwiched composite positive pole plate containing the conductive paste are prevented, and the working performance and the safety of the battery are effectively improved; and moreover, the information also provides a battery cell provided with the winding type negative pole plate and the lithium paste battery.
Description
technical field [0001] The invention belongs to the technology of electrochemical power batteries, and in particular relates to a wound-type semi-solid lithium slurry battery. Background technique [0002] Lithium-ion battery is a new type of high-energy battery with lithium-intercalated compounds as positive and negative electrode materials. Compared with lead-acid batteries and nickel-metal hydride batteries, it has a series of advantages such as high specific energy, high voltage, small self-discharge, good cycle performance and long life. Advantages, more and more people's attention. In recent years, lithium-ion battery technology has achieved rapid development and has begun to be used in electric vehicles. [0003] Chinese invention patent 2016101285248 proposes a semi-solid lithium slurry battery. The positive electrode of the battery contains a rheological conductive paste, and the negative electrode is a metal lithium sheet or other lithium-containing negative elect...
Claims
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IPC IPC(8): H01M4/134H01M4/38H01M10/0587
CPCH01M4/134H01M4/382H01M10/0587Y02E60/10Y02P70/50
Inventor 陈永翀张晓虎张彬张艳萍张萍
Owner 南京竞予能源有限公司