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A bipolar plate-type unit high-energy lead-acid battery and its high-voltage battery pack and packaging method

A technology of lead-acid batteries and unit batteries, which is applied in the direction of lead-acid batteries, lead-acid battery construction, batteries with bipolar electrodes, etc., and can solve the problems of weak current density, electrochemical reaction depth difference, cascade internal resistance too large, Short life of lead-acid batteries and other problems, to achieve the effect of improving resource utilization, improving mechanical strength, and increasing hydrogen evolution potential

Active Publication Date: 2019-04-09
曾碚凯
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  • Abstract
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Problems solved by technology

In the process of repeated charging and discharging, this cascade structure causes the difference in the depth of electrochemical reaction caused by the weak current density imbalance, which is repeated continuously, and the local first damage caused by continuous accumulation leads to the short life of the lead-acid battery.
[0016] 3. In the prior art, the cause of plate shedding is generally attributed to the bending of the grid caused by thermal overload. Part of the reason for this thermal overload is also caused by the excessive internal resistance of the cascade.
It does not take into account that in the prior art, nearly half of the active materials do not participate in the electrochemical reaction of charge and discharge at all, but only do "logistics work"-acting as the current channel and structural support necessary for electrochemical reactions fact

Method used

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  • A bipolar plate-type unit high-energy lead-acid battery and its high-voltage battery pack and packaging method
  • A bipolar plate-type unit high-energy lead-acid battery and its high-voltage battery pack and packaging method
  • A bipolar plate-type unit high-energy lead-acid battery and its high-voltage battery pack and packaging method

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Embodiment Construction

[0105] Below in conjunction with accompanying drawing, the implementation process of the present invention is described in detail:

[0106] It should be pointed out that, in the case of no conflict, the embodiments of the present application and various technical features in the embodiments and their derivative methods can be combined to form a variety of embodiments that are not in the description of the present invention, but these are all The embodiment of the essence and spirit of the invention also constitutes the protection scope of the present invention. The specific description of this embodiment does not limit other possible embodiments, and the following will make specific explanations with reference to the accompanying drawings and in combination with the embodiments.

[0107] In order to understand the improvement intention of the present invention to traditional lead-acid battery, first with figure 1 - Figure 5 illustrates the structure of a conventional lead-aci...

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Abstract

The invention relates to a lead-acid storage battery, in particular to a bipolar-plate type unit high-energy lead-acid battery, a high-voltage battery pack formed from the same and a package method of the high-voltage battery pack. The unit high-energy lead-acid battery comprises an electronic conductor bipolar plate, wherein a positive active material layer and a negative active material layer are respectively coated on two surfaces of the electronic conductor bipolar plate and are the same active material prepared by taking lead sulfate as main, and a batter partition plate is laid on the active material layer on one surface. After the unit battery disclosed by the invention is adopted to package batteries stacked in series, the battery with high voltage, low internal resistance and long cycle lifetime is easy to achieve, meanwhile, the production process of the battery is simplified, and the production cost is reduced.

Description

technical field [0001] The invention relates to a lead-acid storage battery, in particular to a high-voltage battery pack composed of bipolar plate-type unit high-energy lead-acid batteries connected in series and a compact packaging method for the battery pack. Background technique [0002] Since the French scientist Plante invented the lead-acid battery in 1859, the lead-acid battery industry has experienced 154 years of industrial development history. Although lead-acid batteries are cheap, they have stable performance and safe operation. But it still has many fatal shortcomings, such as small specific energy, low specific power, and short life. Seriously affected the expansion of the application field. [0003] In the existing lead-acid battery technology, the basic structure adopted is: the positive and negative active materials are respectively supported by the positive and negative "grids", and the "bus bar" connects multiple "poles" through the "ears" fixed on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/68H01M4/73H01M10/12H01M10/18
CPCY02E60/10Y02P70/50
Inventor 曾碚凯曾培龙
Owner 曾碚凯
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