Now there are many voices saying that Li-ion batteries will completely replace NiMH batteries, and NiMH batteries will become a thing of the past and disappear into history. In China, almost all manufacturers have launched Li-ion battery products to replace NiMH batteries, which seems to be true from the general environment. In terms of applicability, the performance of Li-ion batteries is better than NiMH batteries in many aspects, but will NiMH batteries really stop here? Is NiMH battery technology already backward and should be eliminated? The actual situation is, although a large area is replaced by lithium batteries, but the real complete replacement is unlikely, NiMH batteries are now commercially available the safest and most environmentally friendly energy battery, in many areas NiMH batteries are still irreplaceable consumer products, compared to lithium batteries need more complex BMS structure, NiMH battery safety, environmental protection and convenience, in terms of cost, safety issues and environmental protection is far better than lithium-ion batteries, so we can not be too pessimistic about nickel-hydrogen batteries, the next by Rydbatt Electronics Xiaobian take you to understand the advantages and disadvantages of nickel-hydrogen batteries.
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A, the advantages of nickel-hydrogen batteries
1. low internal output impedance.
2. conventional cycle life.
3. can be discharged at high power
4. Can be deeply discharged.
5. Wide range of charge and discharge environments that can be tolerated
6. flat discharge characteristics (but rapid decline at the end of the cycle).
7. wide operating temperature range.
8. can be charged quickly within 1 hour.
9. support for trickle charging, with low memory generated by charging.
10. reusable exhaust valve.
11. easy to repair.
12. Environmentally friendly (no cadmium, mercury or lead)
13. safer than lithium batteries.
Second, the disadvantages of nickel-metal hydride batteries
1. high self-discharge rate.
2. In addition to the ultra-low self-discharge NiMH batteries can be stored for a long time, ordinary NiMH batteries are not suitable for long-term storage.
3. there is still a memory effect, although better than the performance of nickel-chromium batteries, but there is still.
4. storage will also lead to the aging of NiMH batteries.
5. will have the risk of leakage.
Third, structural characteristics
Positive electrode: active material (Ni(OH)2), conductive agent, solvent, binder, substrate.
Negative electrode: active substance (hydrogen storage alloy powder), binder, solvent, conductive agent, substrate
Diaphragm: PP+PE
Electrolyte: KOH+LiOH
Shell: steel shell, cap, pole lug
We are Manly battery Co., Ltd, a professional Lithium battery manufactuerer, if you have requests or queries on batteries, please feel free to contact info@manlybattery.com
