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Power storage battery fault single body screening structure and method thereof

A power battery and battery technology, applied in structural parts, battery pack parts, circuits, etc., can solve the problems of inability to measure single-cell voltage, time-consuming and labor-intensive, low work efficiency, etc., to improve the efficiency of anatomical analysis, the operation method is simple, The effect of increasing the height of the plate

Active Publication Date: 2020-09-18
ZHEJIANG TIANNENG BATTERY JIANGSU +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a power battery fault cell screening structure and method thereof, which overcomes the defects of the prior art and solves the problem that the busbar of the current battery structure is sealed inside the middle cover by glue. Cutting off the bus bar makes it impossible to measure the voltage of a single cell. Each single cell pole group must be pulled out to find the cause, which is time-consuming and laborious, and the work efficiency is extremely low.

Method used

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  • Power storage battery fault single body screening structure and method thereof
  • Power storage battery fault single body screening structure and method thereof
  • Power storage battery fault single body screening structure and method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0028] Embodiment 1: as Figure 1 to Figure 3 A power battery fault cell screening structure shown includes a battery 1, the battery 1 includes a middle cover 11, a bottom tank 12, and the inside of the bottom tank 12 is divided into a plurality of identical cells 14 by partitions, each cell There is a pole group inside each grid 14, and two adjacent pole groups are directly connected by a bus bar 3, and the bus bar 3 is sealed and fixed inside the middle cover 11 by glue, and the center of each bus bar 3 is directly above Blind holes 5 are drilled, and self-tapping screws 6 are threaded in each blind hole 5, and bolts 7 are threaded on the top of the positive and negative terminals of the battery 1, and the bolts 7 are respectively connected to the discharge instrument 8 through wires.

[0029] The blind hole 5 passes through the middle cover 11 and the glue layer 15 sequentially from top to bottom, and finally extends to the top surface of the bus bar 3; when the self-tappin...

Embodiment 2

[0041] 1. Choose a 12V, 20Ah defective battery;

[0042] 2. The discharge current is set to 40A, and the discharge time is set to 10min;

[0043] 3. Compared with the display of the discharge meter, record the voltage of each single cell:

[0044] V1 V2 V3 V4 V5 V6 1.77 1.96 1.97 1.89 1.93 1.95

[0045] From this, it can be judged that there is an abnormality in the first cell, and a mark is made on the battery cell. When dissecting and analyzing, just pull out the pole group in the first single cell and analyze.

Embodiment 3

[0047] 1. Choose a 12V, 32Ah defective battery;

[0048] 2. The discharge current is set to 62A, and the discharge time is set to 10 minutes;

[0049] 3. Compared with the display of the discharge meter, record the voltage of each single cell:

[0050] V1 V2 V3 V4 V5 V6 1.87 1.91 1.92 1.32 1.94 1.89

[0051]From this, it can be judged that there is an abnormality in the fourth cell, and a mark is made on the battery cell. When dissecting and analyzing, just pull out the pole group in the fourth cell and analyze.

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Abstract

The invention discloses a power storage battery fault single body screening structure and a method thereof. The power storage battery fault single body screening structure comprises a storage battery,wherein the storage battery comprises a middle cover and a bottom groove; the bottom groove is internally divided into a plurality of same single cells through partition plates, each single cell is internally provided with one pole group, and every two adjacent pole groups are directly connected through a busbar; the busbars are fixed inside the middle cover in a sealed mode through glue, blind holes are drilled in the positions right over the centers of the busbars, and self-tapping screws are connected into the blind holes in a threaded mode; and bolts are connected to the tops of a cathodeterminal and a anode terminal of the storage battery in a threaded mode, and the bolts are connected to a discharge instrument through wires. According to the power storage battery fault single bodyscreening structure and the method thereof, the structure is simple, the operation is convenient and quick, the voltage in the single cells is detected through the discharge instrument, the single cells with low voltage can be quickly detected, and the pole groups of the single cells do not need to pulled out for searching for reasons, so that the dissection analysis efficiency is greatly improved, and powerful help is provided for the analysis of faults.

Description

technical field [0001] The invention relates to the field of battery fault detection, in particular to a power battery fault cell screening structure and a method thereof. Background technique [0002] Bus bar, which connects each plate group in series, is equivalent to the internal wire of the battery. In order to improve the volume specific energy and weight specific energy of the battery, the power battery at this stage improves the design of the bridge connection structure to a bus bar direct connection structure. The lead consumption (ie weight) of casting and welding, and the battery basically eliminates the problem of bridge breakage in the past. [0003] However, the new structure brings new technical problems. For example, for defective batteries produced during the manufacturing process, the middle cover needs to be sawed for anatomical analysis. The original battery structure can retain the bus bars of each cell after sawing the middle cover. The voltmeter measu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07C5/344B07C5/02H01M2/20H01M2/04
CPCB07C5/344B07C5/02Y02E60/10
Inventor 李军孙磊胡国柱李明钧
Owner ZHEJIANG TIANNENG BATTERY JIANGSU
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