Compact battery with high energy density and power density

Abstract

A battery device includes a battery housing and a plurality of units disposed in the battery housing. The units include different electrolytes and conduct at least two different reactions for supplying electricity to an external device. Preferably, the plurality of units includes a first unit and a second unit, wherein the first unit has a higher energy density than the second unit, and the second unit has a higher power density than the first unit.

Description

technical field [0001] The invention relates to a battery device, especially a battery device with high energy density and power density and small volume. Background technique [0002] With the vigorous development of portable multi-functional consumer electronic products such as smart phones, tablets, and wearable devices, the performance and size of the battery have become the key to determining the marketability of the product. While reducing the size, it is necessary to It can meet the instantaneous high power (peak power) required for long-term use and networking, so a battery with high energy density (energy density) and high power density (power density) is required. However, the traditional lithium-ion battery Under high-power applications, the power density that meets the requirements cannot be provided, so the device using this battery usually does not have a long standby time, and the instantaneous high power load (peak power load) may also cause the device to cra...

AI Technical Summary

Problems solved by technology

[0002] With the vigorous development of portable multi-functional consumer electronic products such as smart phones, tablets, and wearable devices, the performance and size of the battery have become the key to determining the marketability of the product. While reducing the size, it is necessary to It can meet the instantaneous high power (peak power) required for long-term use and networking, so a battery with high energy density (energy density) and high power density (power density) is required. However, the traditional lithium-ion battery Under high-power applications, the power density that meets the requirements cannot be provided, so the device using this battery usually does not have a long standby time, and the instantaneous high power load (peak power load) may also cause the device to crash. These problems are common in multi-core computers or The communication system is particularly serious, and the above conditions are even more serious when operating at low temperatures

[0003] Although a supercapacitor (supercapacitor) can be coupled to a lithium-ion battery to avoid instantaneous high-power damage, for example, US 5,587,250, WO 2007 / 097534, and US 5,821,006 describe the use of physical contact or electrical connection to couple a supercapacitor and a lithium-ion battery , but additional components need to be added, and the manufacturing process is complicated, which increases the volume and cost of the battery

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