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Parallel network with safety protection function and large-capacity battery using same

A technology of safety protection and function, applied in the direction of batteries, battery pack components, circuits, etc., can solve problems such as fire, severe heating, thermal runaway, etc., and achieve the effect of protecting surrounding batteries and avoiding battery safety accidents

Inactive Publication Date: 2016-05-04
SUZHOU ANKAO ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, repeated cycle push, the heat will become more and more serious, and even thermal runaway will occur, causing a fire

Method used

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  • Parallel network with safety protection function and large-capacity battery using same
  • Parallel network with safety protection function and large-capacity battery using same
  • Parallel network with safety protection function and large-capacity battery using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] figure 1 and figure 2 A specific embodiment of the large-capacity battery of the present invention is shown. The same as the traditional large-capacity battery, it also includes a battery clamp 1, numerous cell mounting holes 10 made on the battery clamp, placed respectively A plurality of shrapnels 2 in each cell installation hole, a plurality of cells 4 respectively inserted in the cell installation holes, and a parallel network 3 . Wherein, the parallel network 3 includes a plurality of cell connection pads arranged on the same plane and distributed at intervals from each other, and a plurality of connection sheets connected between each cell connection pads, and each cell connection pad is correspondingly arranged on each cell connection pad. Core installation hole and connected with the corresponding cell, so that the figure 1 These cells on the same layer are connected in parallel, and the cells are cylindrical lithium-ion cells.

[0030] The key improvement o...

Embodiment 2

[0036] refer to Figure 5 As shown, the structure and working principle of the large-capacity battery in this embodiment are similar to those in the first embodiment, the only difference is that the specific structural form of the fusing protection structure in this example is different from that in the first embodiment. In this example, an arc-shaped notch 6 is formed on one side of the connecting piece 3b in the width direction, thereby forming the fuse protection structure.

[0037] The arc-shaped notch 6 is a semicircular structure.

Embodiment 3

[0039] refer to Figure 6 As shown, the structure and working principle of the high-capacity battery in this embodiment are similar to those in the first embodiment, and the only difference is that the specific structural form of the fusing protection structure in this example is different from that in the first embodiment. In this example, an arc-shaped notch 7 (two in total) is formed on both sides of the connecting piece 3b in the width direction, thereby forming the fuse protection structure.

[0040] In this example, the two arc-shaped notches 7 are also semicircular structures, and their size is smaller than that of the arc-shaped notches 6 in the second embodiment.

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PUM

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Abstract

The invention discloses a parallel network with a safety protection function and a large-capacity battery using the parallel network. The parallel network comprises a plurality of battery cell connecting gaskets which are arranged on a same plane and are mutually distributed at intervals and a plurality of connecting plates connected among the battery cell connecting gaskets; and a fusing protection structure capable of being fused by high temperature is arranged on each connecting plate respectively. The battery cells in short-circuit faults in the large-capacity battery can be quickly isolated, so that the other battery cells in the large-capacity battery are effectively protected, and safety accidents of the battery are avoided.

Description

technical field [0001] The invention relates to a parallel network with a safety protection function and a large-capacity battery using the parallel network, and belongs to the technical field of safety prevention and control of lithium battery packs. Background technique [0002] Lithium-ion battery is a new type of storage battery with the highest specific energy, the longest cycle life, and no harmful substances. Many of its characteristics have reached the highest level of battery products in history. Therefore, it has been widely used, ranging from mobile phones and toys, to automotive power modules and power station energy storage power supplies, and there are markets for it everywhere. But it also has its own shortcomings, which are potential safety hazards. This type of battery has high energy storage and uses an organic electrolyte, so there is a fundamental risk of fire and explosion. All battery manufacturers and scientific research and design units have taken ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/20H01M2/34H01M50/50H01M50/503H01M50/572H01M50/583
CPCH01M2200/30H01M50/597H01M50/503H01M50/583H01M50/50Y02E60/10
Inventor 许玉林王爱淑
Owner SUZHOU ANKAO ENERGY