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Energy storage device with multiple cores stacked inside

A device and energy storage technology, which is applied in the field of energy storage manufacturing, can solve problems such as the difficulty in manufacturing high-capacity and high-power energy storage devices, and achieve the effects of making full use of installation space, simple structure, and low cost

Pending Publication Date: 2016-05-25
庄新国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the manufacturing capacity of the winding machine, it is difficult to manufacture high-power energy storage devices with high height and large monomer capacity with positive and negative poles on the same top surface

Method used

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  • Energy storage device with multiple cores stacked inside
  • Energy storage device with multiple cores stacked inside
  • Energy storage device with multiple cores stacked inside

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In order to illustrate the present invention, the present embodiment makes 220Ah cuboid lithium ion battery, and appearance is as follows figure 1 shown. The positive electrode material of lithium ion energy storage device usually adopts LiFePO 4 , LiNiCoMnO 2 , LiNiCoAlO 2 , LiMn 2 o 4 , LiCoO2, or a mixture of two of them, and the negative electrode material is C, Li 4 T 15 o 12 , Si or its compounds, Sn or its compounds, the electrolyte uses 1.2MLiPF 6 +EC+EMC, diaphragm adopts PE film, PP film, PP / PE film, coated with SiO 2 or Ai 2 o 3 PE composite film.

[0022] Prefabricate the energy storage device cover plate 106 with the positive and negative poles on the same top surface, use an aluminum plate with a thickness of 1mm, cut it into 58×135mm, and open it according to the designed position The explosion-proof disk installation hole, The liquid injection hole 104 and the hole for installing the pole; the positive pole 102 and the negative pole 105 ar...

Embodiment 2

[0027] Make a 220Ah cuboid lithium-ion battery, which looks like figure 1shown. Except that the small core package adopts a winding cuboid structure, the materials, method and size of the battery are the same as in Example 1. The coating width of the positive and negative pole pieces and the wide band of the smooth edge are the same as in Example 1; the positive and negative pole pieces of the whole roll are respectively cut into 305 rolls of positive pole pieces and 302 rolls of negative pole pieces with a width of 124mm and 125mm, and the whole roll of diaphragm is cut into 124mm 304 rolls of wide diaphragms; use a winding machine to roll into a small core package with a thickness of 9mm, a length of 134mm, and a width of 56mm, and use ultrasonic welding, laser welding, or riveting methods to connect the positive and negative electrodes of the small core package respectively. As a whole, make a small core pack 401 with a winding rectangular parallelepiped structure of the p...

Embodiment 3

[0029] To make a 22000F supercapacitor, except for the positive and negative materials, the same 1500m 2 The active carbon of / g, the negative current collector are aluminum foil, the conductive connecting sheet 502 is changed into aluminum material and electrolytic solution adopts 1.2MTEABF4+PC, other and embodiment 1 make 220Ah rectangular parallelepiped lithium-ion battery method and size are identical. The size of 22000F supercapacitor 101 is the same as that of the battery 101 in Embodiment 1, and its shape is as follows figure 1 shown. The capacitor is charged to 2.7V with 1000A, and discharged to 1.35V with 1000A constant current. The measured rated capacity is 22000F.

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Abstract

The invention provides an energy storage device with multiple cores stacked inside. The energy storage device comprises a core cladding of a cuboid structure formed by longitudinally laminating and stacking complete-tab small core claddings in parallel connection, an energy storage device cover plate with a positive post and a negative post on a same top surface of the device, and a shell. The small core cladding tab is a complete tab, and large current can pass through the complete tab; and the core cladding structure formed by longitudinally laminating and stacking the small core claddings in parallel connection is adopted, and the core cladding is not subjected to the height limitation, so that the energy storage device is not subjected to the height limitation; and the positive post and the negative post are arranged on the same top surface of the device, and the electrical connection forming the serial connection and the parallel connection is simple, so that an energy storage device group has electrical properties such as high energy and high power and is simple in structure, low in cost and capable of sufficiently utilizing the installation space.

Description

technical field [0001] The invention relates to the field of energy storage manufacturing, in particular to an energy storage device with an internal multi-core stack. Background technique [0002] Energy storage devices include lithium-ion batteries and supercapacitors, which are widely used in electric vehicles, energy storage and other fields. These application fields require the energy storage device system to have high-energy and high-power electrical properties, and a simple structure that can make full use of the installation height space. [0003] Usually, multiple small-capacity devices are connected in parallel to form a large-capacity device block, and then connected in series to meet the large energy needs of electric vehicles and energy storage systems. Multiple devices are externally connected in parallel. Due to the inconsistent performance of each device and only one voltage measurement bit, when the system is used, it is easy to cause overcharge or overdisc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M2/10H01M10/04H01G11/10H01G11/12H01M50/20
CPCH01M10/0431H01M10/058H01G11/10H01G11/12H01M50/20Y02E60/10Y02P70/50
Inventor 庄新国
Owner 庄新国
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