Battery life estimation system and battery life estimation method

Abstract

The invention provides a battery life estimation system and a battery life estimation method. The battery life estimation system comprises a controller, a voltage detection module, a life estimation module and a current acquisition module; the voltage detection module is configured to detect a bus voltage output by a battery and send the bus voltage to the life estimation module; the current acquisition module is configured to acquire the working current of a load and send the working current to the life estimation module; the life estimation module is configured to determine the remaining life of the battery according to the working current of the load; and the life estimation module is further configured to control the on-off of the controller according to the bus voltage and the remaining life of the battery. The on-off of the controller can be controlled according to the bus voltage and the remaining life of the battery, the advantages of the battery can be fully utilized, power-stable power supply of the load in an operation process is achieved, meanwhile, the remaining life of the battery can be estimated, and the remaining use time of the battery is acquired.

Description

technical field [0001] The invention belongs to the technical field of battery life estimation systems, and in particular relates to a battery life estimation system and a battery life estimation method. Background technique [0002] Lithium-ion batteries have the characteristics of high energy density and easy power supply to nonlinear loads. They have good prospects in the application fields of electric vehicles, hybrid vehicles and fuel cell vehicles. [0003] Although lithium-ion batteries have the above-mentioned advantages, the parameters of lithium-ion batteries are highly sensitive, and it is difficult to predict their life when dynamically supplying high-power loads. For lithium-ion batteries, how to give full play to the advantages of lithium-ion batteries is crucial in It is a technical problem that those skilled in the art are facing to achieve a stable power supply to the load power during operation and at the same time to estimate the life of the lithium-ion ba...

AI Technical Summary

Problems solved by technology

[0003] Although lithium-ion batteries have the above-mentioned advantages, the parameters of lithium-ion batteries are highly sensitive, and it is difficult to predict their life when dynamically supplying high-power loads. For lithium-ion batteries, how to give full play to the advantages of lithium-ion batteries is crucial in It is a technical problem that those skilled in the art are facing to achieve a stable power supply to the load power during operation and to be able to estimate the life of the lithium-ion battery and obtain the remaining service time of the lithium-ion battery.

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