Battery pack with internal serial structure and manufacture method thereof

An internal series, battery pack technology, used in secondary battery manufacturing, battery pack components, structural parts, etc., can solve problems such as affecting overall performance, increasing combined resistance, reverse installation of positive and negative electrodes, and reducing external short circuits of batteries , Simplify the production process and ensure the effect of consistency

Inactive Publication Date: 2011-06-22
HUNAN CORUN NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This external series combined battery pack requires high consistency between the single cells, otherwise it will seriously affect the overall performance; and with the increase of combined connection points, the combined resistance will inevitably increase, and the exposed conductive connection parts It brings hidden dangers to the safety of the battery pack; at the same time, with the increase in the number of combinations, the volume of the battery pack becomes larger and larger; even during the combination process, there may be phenomena such as reverse installation of positive and negative poles, short circuit, etc., which limits the development of battery application technology

Method used

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  • Battery pack with internal serial structure and manufacture method thereof
  • Battery pack with internal serial structure and manufacture method thereof
  • Battery pack with internal serial structure and manufacture method thereof

Examples

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Embodiment 1

[0020] A 3.6V cylindrical AA NiMH battery pack, figure 1 is a schematic cross-sectional view of its structure. Inside the plastic shell 2 are three pole groups 4a, 4b and 4c with a capacity of 2500mAh and a voltage of 1.2V. There is a metal partition 7 to separate it, and a sealing ring 5 is placed on the partition, see the placement method figure 2 , is to cover the sealing ring 5 on the separator; the positive terminal 3 of the battery top cover and the negative terminal 1 of the casing are used to connect the battery to the outside; the negative terminal of the pole group 4a is connected to the negative terminal of the battery top cover through the ear 6 1 connection, the positive terminal of the pole group 4a is connected to the separator 7 through the tab 6; while the negative terminal of the pole group 4b is connected to the separator 7 through the tab 6, and the positive terminal is connected to the other separator 7 through the pole connected to the ear 6; the negat...

Embodiment 2

[0026] The battery pack manufacturing method of the above-mentioned embodiment 1 is as follows:

[0027] Prepare 3 pole groups (the pole group is no different from conventional high-capacity AA batteries), 1 plastic battery case, 2 sets of metal separators and sealing rings with grooves, 2 top covers (one for each positive and negative pole) ), 6 tabs, one end of the battery cell top cover is used as the negative terminal of the battery pack, and the end of the battery top cover is used as the positive terminal of the battery pack. After the positive and negative terminals of each pole group are welded to one tab respectively, put the first pole group into the shell according to the positive and negative pole marking directions on the shell, and the negative pole tab of the pole set and Connect the negative end of the battery top cover, inject electrolyte, install the metal separator with a sealing ring, and then connect the positive electrode lug of the electrode group with t...

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Abstract

The invention provides a battery pack with an internal serial structure and a manufacture method thereof. The battery pack comprises N pole groups, N-1 baffles with conductivity, an electrolyte and sealing rings in a battery shell and top covers on the battery shell. The manufacture method comprises the following steps of: separating two adjacent pole groups with the baffles; connecting the anode of one pole group with a baffle; connecting the cathode of the other pole group with the other edge of the baffle; and serially connecting the adjacent pole groups. The battery pack is designed according to a needed voltage so that a plurality of unit battery cores are connected serially in the same battery shell for use as a whole to meet the voltage requirement. The battery pack provided by the invention has smaller battery size and lighter mass under the same voltage while meeting the voltage requirement on various electric appliances and has low requirement for a battery packing technology. Meanwhile, due to no connectors for conduction among cell batteries when the batteries are combined, the external short circuit of the batteries can be reduced.

Description

technical field [0001] The invention relates to a battery pack and a manufacturing method, in particular to a battery pack with an internal serial structure and a manufacturing method. Background technique [0002] With the development of society, electric products are becoming more and more diversified and the power is large, which means that the requirements for the voltage and capacity of the batteries used are becoming more and more complex and higher, and the single batteries may have to be connected in series Or parallel combination, even both series and parallel; at the same time, portability and compactness are also the direction of development, that is, the volume is getting smaller and smaller, and the space for the battery is smaller. In the current battery products, the voltage of the single battery is generally low, such as 1.2V for nickel-metal hydride batteries, 2.0V for lead-acid batteries, and 3.6V for lithium-ion batteries. Multiple individual cells will b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M2/20H01M2/34
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 何策衡陈风杨亚男徐冲
Owner HUNAN CORUN NEW ENERGY CO LTD
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