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Differing from the electrolyte of ordinary lithium-ion batteries, the electrolyte of zinc-nickel batteries is strongly alkaline and prone to precipitation. This has been a "stumbling block" in the liquid injection process for a long time. Traditional injection pumps often suffer from pump or pipeline blockages, reduced precision, and even frequent shutdowns for maintenance due to sediment accumulation, which seriously affects production efficiency and the consistency of battery liquid injection volume. Guangzhou Ascend Precision Machinery Co.,Ltd succeeded overcoming this problem with the self-developed high-precision linear injection pump system and finally brought stable and reliable injection solutions for zinc-nickel battery customers.

But what exactly makes the electrolyte of zinc-nickel batteries so difficult to inject?

The electrolyte of zinc-nickel batteries is a non-volatile strong alkaline aqueous solution. And the solubility of zinc oxide is limited, so the electrolyte often appears as a milky white suspension and tends to stratify and precipitate when left standing, which contributes to the following problems during the injection process:

Pump valve clogging: Sediment accumulation damages seals or jams moving parts;

Fluctuations in injection precision: Uneven distribution of suspended solids and poor stability of traditional pumps;

Frequent shutdowns for maintenance: Cleaning pipes and pump bodies increases production costs.

Injection pumps of Guangzhou Ascend targeting the characteristics of zinc-nickel battery electrolytes, adopt a customized plunger structure and a specialized pump valve system to fundamentally solve problems such as precipitation and low precision: 

  

 

1. Anti-precipitation plunger technology

    Special material and structural design prevent precipitation adhesion or jamming, ensuring smooth long-term operation.

2. High-precision pump valve control

    Millisecond-level response and precise regulation of micro-flow rates. Even when the liquid contains suspended solids, the liquid injection precision remains within ±0.3%.

3. Ultra-strong stability verification

Extreme test: After injection, left the liquid in the pipeline standing overnight. When restarted the pump next day, the precision still meets the standard with no impact from precipitation.

The following figure shows the repeated test data of the FSH-MLA01-D-SV liquid injection pump:   

① Customer value: dual improvement in efficiency and quality

② Precision without worry: 0.3% ultra-high precision ensures consistency of battery cells and improves yield.

③ Maintenance-free design: anti-precipitation structure significantly reduces shutdown cleaning frequency and lowers comprehensive costs.

④ Wide adaptability: suitable for various corrosive liquids containing micro-precipitates and suspended solids, such as zinc-nickel and zinc-bromine battery electrolytes.

Guangzhou Ascend Precision Machinery Co.,Ltd focuses on high-difficulty liquid injection technology to drive the upgrading of battery manufacturing with an innovation engine. For more production information, please feel free to contact us at any time!

Key words: zinc-nickel battery injection pump, high precision injection, anti-precipitation pump, electrolyte precision metering, Ascend Linear pump

https://www.ascendtechs.com/Ascend-Injection-Pump.html
Guangzhou Ascend Precision Machinery Co.,Ltd.

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