High voltage power type lithium ion chargeable battery

A rechargeable battery and lithium-ion technology, applied in battery electrodes, secondary batteries, battery pack components, etc., can solve problems such as short circuit between cells, thermal melting of diaphragm, battery scrapping, etc., and achieve perfect structure, scientific design, and structure ingenious effect

Inactive Publication Date: 2008-03-12
雷天电池技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, it is found that multiple batteries are connected in series and placed in a housing containing electrolyte. Although there is a diaphragm between each unit lithium-ion battery, the diaphragm will still be melted due to excessive temperature. Cause short circuit between cells, causing the whole battery to be scrapped

Method used

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  • High voltage power type lithium ion chargeable battery
  • High voltage power type lithium ion chargeable battery

Examples

Experimental program
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Embodiment 1

[0021] Embodiment 1: As can be seen clearly from Fig. 1, this is a kind of square high-voltage power type lithium-ion rechargeable battery, consists of a positive plate 2, a negative plate 3 and a separator 4 and a casing 1 installed therein. The bundle head 5 is composed of a cell body 6, and the casing 1 is provided with a positive pole 7, a negative pole 8, and a liquid injection exhaust valve 9 for injecting electrolyte, and the casing 1 is filled with electrolyte.

[0022] The housing 1 is shown in FIG. 2 , and the housing 1 is divided into eight power supply core units 61 , 62 , 63 , 64 , 65 , 66 , 67 , and 68 separate battery compartments 11 by partitions 10 ; The height of the separator 10 is lower than the guide ear ends 21, 31 of the pole plates of each cell unit, so that the upper part of each cell compartment 11 in the housing 1 forms a channel for the common electrolyte to flow. The through holes 12 and 13 leading out from the positive pole 7 and the negative pole...

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PUM

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Abstract

A high voltage dynamic lithium ion built-in battery is provided, which comprises a shell filled with electrolyte and at least two battery cells inside the shell. The positive and negative electrodes of each of the lithium ion battery cells are connected in series to form a battery cells body that will be wholly encapsulated into a shell. The invention is characterized in separately placing each of the said battery cells connected in series in each battery cell cabin. The invention is scientifically designed with refined and reasonable structure. Based on the characteristics of the invention, the said invention greatly improves its structure and lowers the possible damage due to the rise in temperature when using the battery. The structure can possibly increase the monomeric voltage of the lithium ion battery from 2.0V to hundreds of V, and brings better property of recharge cycles, meeting the requirement in various fields and under different loading conditions.

Description

technical field [0001] The invention relates to a lithium-ion battery, in particular to a high-voltage power lithium-ion rechargeable battery. Background technique [0002] At present, the working voltage of a single lithium-ion battery is between 2.0 and 4.25V. To meet the power consumption of high-voltage loads, multiple single batteries must be used in series. This not only increases the internal resistance, but also relies on the balanced charge and discharge protection circuit set up due to the series connection of multiple single cells, which is seriously restricted by technology and cost. For example, for a portable computer, the DC voltage is 12-18V. If a lithium-ion battery is used, 3-6 single batteries need to be connected in series to meet the power supply. For example, an electric bus with a working voltage of 388V requires more than 100 single lithium-ion batteries connected in series to work. The larger the capacity of the batteries connected in series, the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/38H01M2/02H01M2/24H01M2/30H01M4/58H01M4/48H01M4/62H01M4/02H01M2/12H01M10/0525H01M50/102H01M50/30H01M50/529H01M50/543
CPCY02E60/12Y02E60/10
Inventor 钟馨稼
Owner 雷天电池技术有限公司
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