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Stack type lithium ion battery and lithium ion battery pack

A technology of lithium-ion batteries and ion conduction, applied in the field of stacked lithium-ion batteries and lithium-ion battery packs, can solve problems such as heating of copper plates or connecting wires, save connections and wiring harnesses, simplify production processes, and simplify the coating process Effect

Inactive Publication Date: 2020-07-31
SUZHOU YOULION BATTERY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there will be a lot of connecting copper plates or connecting wires. These copper plates or connecting wires generally have resistance and generate a certain amount of heat, and most of the battery packs can only be concentrated on the bottom of the car.

Method used

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  • Stack type lithium ion battery and lithium ion battery pack
  • Stack type lithium ion battery and lithium ion battery pack
  • Stack type lithium ion battery and lithium ion battery pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see Figure 2 to Figure 3 , the figure shows a stack type lithium-ion battery provided by Embodiment 1 of the present invention, specifically a square battery, which consists of a positive electrode current collector 1, a negative electrode current collector 2, an electrolyte layer 3, and a positive electrode active material layer 4 and negative electrode active material layer 5, the electrolyte layer 3 is arranged between the positive electrode collector 1 and the negative electrode collector 2, the positive electrode active material layer 4 is arranged between the positive electrode collector 1 and the electrolyte layer 3, and the negative electrode Active material layer 5 is provided between negative electrode current collector 2 and electrolyte layer 3 . The sealant 6 is disposed between the positive electrode current collector 1 and the negative electrode current collector 2 .

[0046] Wherein, the positive electrode current collector 1 can be but not limited to a...

Embodiment 2

[0054] see Figure 6 to Figure 7 , the figure shows a stack type lithium-ion battery and a battery pack based on the single battery provided by the second embodiment of the present invention, which shows the three-dimensional structure of the single battery and the battery pack of the "L" shaped special-shaped battery For example, the shape of the electrode can be formed by stamping with a grinding tool, or cut by a laser.

Embodiment 3

[0056] see Figure 8 to Figure 9 , the figure shows a stack type lithium-ion battery and a battery pack based on the single battery provided by Embodiment 3 of the present invention, which shows the three-dimensional structure of the single battery and the battery pack of a "U" shaped special-shaped battery For example, the shape of the electrode can be formed by stamping with a grinding tool, or cut by a laser.

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Abstract

The invention provides a stack type lithium ion battery, which comprises a positive electrode current collector, a negative electrode current collector, an electrolyte layer, a positive electrode active material layer and a negative electrode active material layer, wherein the electrolyte layer is arranged between the positive electrode current collector and the negative electrode current collector, the positive electrode active material layer is arranged between the positive electrode current collector and the electrolyte layer, the negative electrode active material layer is arranged betweenthe negative electrode current collector and the electrolyte layer, and a sealant is arranged between the positive electrode current collector and the negative electrode current collector. The invention also provides a lithium ion battery pack based on the stack type lithium ion battery. The lithium ion battery provided by the invention is the development direction of the next generation of lithium battery, the energy density of the battery is greatly improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of lithium ion batteries, in particular to a stack type lithium ion battery and a lithium ion battery pack. Background technique [0002] Traditional lithium-ion batteries are first made into a fixed-size monomer and a monomer casing. In the casing, the positive and negative electrodes are separated by a porous diaphragm. In order to achieve the designed battery capacity (Ah), the positive, negative and separator are achieved by winding or multi-layer lamination. This case is permanently sealed after injection of liquid electrolyte. The housing can be cylindrical or square. Shell material can be steel shell, aluminum shell or soft package. Figures 1 to 1A Shown is the winding structure of a traditional lithium-ion battery, which is mainly composed of a positive electrode collector 11, a positive electrode active material ternary material or lithium iron phosphate 21, a separator and an electrolyte 31, a negative e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0585H01M10/0525H01M2/20H01M50/51
CPCH01M10/0525H01M10/0585H01M50/502Y02E60/10Y02P70/50
Inventor 毛焕宇徐晓磊
Owner SUZHOU YOULION BATTERY INC
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