High-energy density battery pack, multi-cell switching test device and test method

Abstract

The present invention provides a high-energy-density battery pack, the electrodes of the battery cells are shaped and connected, so that the function of series-parallel connection combination of the single battery cells is realized; meanwhile, through the arranged voltage, current and temperature monitoring and protection circuit, the functions of charging and discharging protection, short-circuitprotection and equalization of the battery cell are realized; the invention provides a multi-cell switching test device and a multi-cell switching test method, which can perform series-parallel combined switching on single cells in a test state and monitor voltage, current and temperature information at the same time. According to the invention, the production cost is reduced through the modularbattery cell, and the research, development, test and maintenance efficiency of the battery cell and the battery pack is improved.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a battery pack with high energy density, a multi-cell switching test device and a test method. Background technique [0002] With the rapid development of electronic technology, the demand for electronic products is getting smaller and smaller, and the demand for use time is getting longer and longer. There is an urgent need for a battery with high energy density to provide power, and the traditional power supply of electronic products is mostly Nickel-metal hydride batteries, this type of battery has a low voltage platform, has a memory effect, cannot replenish power at any time, and has a high self-discharge rate; while lithium-ion batteries have high energy density, good safety, no memory effect, and can replenish power at any time And been widely used. However, lithium-ion batteries need to be combined in series and parallel during use, and lithium-ion batterie...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of electronic technology, the demand for electronic products is getting smaller and smaller, and the demand for use time is getting longer and longer. There is an urgent need for a battery with high energy density to provide power, and the traditional power supply of electronic products is mostly Nickel-metal hydride batteries, this type of battery has a low voltage platform, has a memory effect, cannot replenish power at any time, and has a high self-discharge rate; while lithium-ion batteries have high energy density, good safety, no memory effect, and can replenish power at any time and is widely used

However, lithium-ion batteries need to be combined in series and parallel during use, and lithium-ion batteries usually have problems such as imbalance between single cells, overcharging, and over-discharging during long-term use, which will affect the service life of lithium-ion batteries. impact, and even cause safety hazards

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