Lead-acid storage battery or battery pack

A technology of lead-acid batteries and battery packs, which is applied in the direction of lead-acid batteries, lead-acid battery construction, capacitor collector combination, etc., and can solve problems such as short service life, low utilization rate of active materials, and large electrode specificity

Pending Publication Date: 2018-10-12
杨春晓
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AI Technical Summary

Problems solved by technology

However, in terms of performance, lead-acid batteries or battery packs show shortcomings such as short service life and low specific energy. At present, the specific energy of lead-acid batteries or battery packs in application is about 20-40Wh / kg, and the cycle life is about 20-40Wh / kg. 150-1500 times, the life of floating charge is about 5-20 years
There are many factors that affect the service life of lead-acid batteries or battery packs, internal factors such as active material composition, crystal form, porosity, plate type and size, grid material and structure, separator type and performance, assembly pressure, electrolyte type And formula, acid density, impurities, battery consistency, etc., external factors such as discharge depth, discharge current density, charge current density, overcharge, undercharge, temperature, mechanical vibration, stress deformation, etc., to sum up, the main, Common battery or battery failure modes that lead to the end of life of lead-acid batteries or lead-acid battery packs include grid corrosion, softening and shedding of positive active materials, irreversible sulfation, early capacity loss, water loss, electrode passivation, negative surface area Shrinkage, poor battery consistency, etc.; the reasons that affect the specific energy of lead-acid batteries or lead-acid battery packs are mainly due to the relatively large proportion of electrodes and low utilization of active materials. For example, lead-acid batteries mostly use pure lead or lead The active material utilization rate of the alloy current collector and the current collector and the power lead-acid battery under the condition of 2h rate discharge is only about 25-32%
The service life of the battery or battery pack can be greatly improved and extended by performing or being reversed positive and negative polarity and subsequent charging or charging and discharging operations of the lead-acid battery or battery pack, because through In this operation, many factors that affect the life of the lead-acid battery or battery pack are avoided or suppressed or reversed or repaired, but the traditional common lead-acid battery or battery pack, due to its structure, performs or is reversed in positive and negative polarity and There is a certain incompatibility in the subsequent charging or charging and discharging operations; on the other hand, this operation also makes some, which is conducive to improving other performances of the battery, such as specific energy, but will reduce (when not combined with this operation) battery life. Yes, the technical means, including the battery structure, may be feasible and effective in combination with this operation; in addition, due to its structure, the production and recycling of traditional ordinary lead-acid batteries or battery packs in application are relatively complicated

Method used

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Examples

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Embodiment 1

[0095] Present embodiment valve-regulated sealed lead-acid accumulator or battery pack (VRLAB), its positive pole, negative pole have identical lead paste and lead paste formula each other before electric formation, and the formula of this lead paste is: 100kg ball-milled lead powder, 0.05kg short fiber, 0.18kg lignin, 0.30kg acetylene black, 0.60kg barium sulfate, 0.06kg silicon dioxide, 8.25kg water, 8.7kg sulfuric acid aqueous solution (45Wt.%), the present embodiment lead-acid accumulator or battery pack The rated voltage is U volts and the rated capacity is C 2 (2h rate, 25℃), C 5 (5h rate, 25℃) or C 20 (20h rate, 25°C), where U=2, 6, 12, 24, 36, 48, 60 or 72, C 2 = 6.5Ah, 12Ah, 14Ah, 16Ah, 20Ah, 24Ah, 30Ah or 32Ah, or, C 5 = 8.6Ah, 15.9Ah, 18.6Ah, 21.2Ah, 26.5Ah, 31.9Ah, 39.8Ah or 42.5Ah or, C 20 = 10.4Ah, 19.2Ah, 22.4Ah, 25.6Ah, 32Ah, 38.4Ah, 48Ah or 51.2Ah. The positive electrodes of the lead-acid storage battery or the battery pack of the present embodiment are e...

Embodiment 2

[0100]One of the embodiments of the lead-acid storage battery or battery pack in this embodiment is that the flat grid-type lead-acid storage battery in this embodiment has a rated voltage of 2V and includes a flat grid-type positive electrode and a flat grid-type negative electrode for convenience. Note that the two planar grid electrodes are respectively referred to as electrode A and electrode B, and there is a separator between the electrodes A and B, and the electrodes A and B are the same as each other or the same type of electrodes before the electrodes are formed, that is, , regardless of the manufacturing error produced when manufacturing the electrode, before the two electrodes are formed, all aspects of electrode manufacturing or composition, such as manufacturing process, material, electrode structure (such as electrode structure, shape, size, current collector , lead paste, lead paste formula, lead paste quality, etc.) and other aspects of electrode manufacturing o...

Embodiment 3

[0128] In the lead-acid storage battery or battery pack of this embodiment, the active material formula of the positive pole and the negative pole or the active material before the electric polarization are the same as each other, or / and, the positive pole and the negative pole are the same or the same as each other before the electric polarization A kind of electrode, that is, the positive electrode and the negative electrode, before the electrode is formed, without considering the manufacturing error, all aspects of electrode manufacturing or composition, such as manufacturing process, material, electrode structure (such as electrode structure, shape, Size, current collector, active material, active material formulation, active material quality, etc.) and other aspects of electrode fabrication or composition are the same.

[0129] In this embodiment, the lead-acid storage battery or battery pack has a positive pole and a negative pole of plane grid type, tubular type, bipolar...

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Abstract

The invention discloses a lead-acid storage battery or battery pack, wherein a positive electrode, a negative electrode, and active substances of the positive electrode and the negative electrode arethe same in formula, or the active substances of the positive electrode and the negative electrode are the same before the electric polarization is formed, and the service life of the lead-acid storage battery or battery pack can be or is actually prolonged by performing or being subjected to positive electrode and negative electrode polarity reversal, and a subsequent charging or discharging operation. The lead-acid storage battery or battery pack disclosed by the invention has remarkably prolonged service life and remarkably improved other performance and is beneficial to simplifying the production and recovery work of the lead-acid storage battery or battery pack.

Description

technical field [0001] The present invention relates to a lead-acid accumulator or a battery pack, in particular to a lead-acid accumulator or a battery pack, the positive and negative poles of which have the same active material formulations or the same active material before the electrodes are formed, and the lead-acid A storage battery or battery pack can and / or actually have its service life improved or extended by performing or being subjected to positive and negative polarity reversal and subsequent charging or charging and discharging operations. Background technique [0002] Due to its low manufacturing cost, high performance / price ratio, safety, stability, and recyclability, lead-acid batteries or battery packs have been widely used for many years and occupy the leading position in the sales share of the secondary battery market. However, in terms of performance, lead-acid batteries or battery packs show shortcomings such as short service life and low specific energ...

Claims

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Application Information

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IPC IPC(8): H01M10/44H01M10/12H01G11/08
CPCH01G11/08H01M10/12H01M10/44H01M10/441Y02E60/10Y02P70/50
Inventor 杨春晓
Owner 杨春晓
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