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Super capacitor and lead-acid cell mixed chemical power supply

A technology of supercapacitor and lead-acid battery, applied in the direction of capacitor collector combination, capacitor, electrolytic capacitor, etc., can solve the problems of poor reliability, high price of high-power components, low specific energy of supercapacitor, etc., to avoid large current impact , the effect of prolonging life

Inactive Publication Date: 2010-08-04
SHANGHAI AOWEI TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the low specific energy of supercapacitors, they are only used as the main energy source in special occasions, and are used as auxiliary energy sources in most occasions. The parallel use of batteries and supercapacitors has always been the direction of chemical power workers. The application numbers are 200610019954.2, 200410011420.6 and other patents The method of parallel connection of storage battery and supercapacitor is introduced, but in these methods, the supercapacitor is first connected in series, the lead-acid battery is first connected in series, and then the two are connected in parallel. It also has unbalance, which is equivalent to the parallel connection of two unbalanced components. To make the system reliable, it must have a reliable equalization circuit, and the supercapacitor is a high-power device. To make it quickly and effectively equalize, a high-power must be used. Components, while the current high-power components are very expensive and have poor reliability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A 100Ah lead-acid battery is connected in parallel with a 2.7V / 1500F organic symmetric supercapacitor, and then connected in series to form a 12V unit power supply. After testing, the maximum current for 13.2s is 300A (voltage higher than 10.8V), and the discharge time is 13.2 at -45°C. s151A, 50A charge and discharge cycle, a 5s 300A pulse every 5 minutes during discharge, has a capacity of 87% at 500 times, while a simple lead-acid battery (voltage higher than 10.8V) 300A discharge is only 5s, -45 ℃ Under the condition of 151A pulse, 50A charge and discharge cycle, a 5s 300A pulse every 5 minutes during discharge, it has a capacity of 55% at 500 times. A 12V unit is used to form a 600V system for pure electric buses. The energy recovery rate is 11%. After half a year of operation, the highest voltage in the single unit is 2.47V and the lowest voltage is 2.35V.

Embodiment 2

[0016] A 100Ah lead-acid battery is connected in parallel with a 2.7V / 3000F organic symmetric supercapacitor, and then connected in series to form a 12V power supply unit. After testing, the maximum current for 13.2 seconds is 527A (voltage higher than 10.8V), and the discharge time is 13.2A at -45°C. s321A, 50A charge and discharge cycle, a 5s 300A pulse every 5 minutes during discharge, has a capacity of 92% at 500 times, while a simple lead-acid battery (voltage higher than 10.8V) 300A discharge is only 5s, -45 ℃ Under the condition of 321A pulse, 50A charge and discharge cycle, a 5s 300A pulse every 5 minutes during discharge, it has a capacity of 55% at 500 times. The 12V unit is used to form a 600V system for pure electric buses. The energy recovery rate is 17%. After half a year of operation, the highest voltage in the single unit is 2.45V and the lowest voltage is 2.38V.

Embodiment 3

[0018] A 100Ah lead-acid battery is connected in parallel with a 2.7V / 5000F organic symmetrical supercapacitor, and then connected in series to form a 12V power supply unit. After testing, the maximum current for 13.2s is 705A (voltage higher than 10.8V), and the discharge time is 13.2A at -45°C. s439A, 50A charge and discharge cycle, a 5s 300A pulse every 5 minutes during discharge, has a capacity of 93% at 500 times, while a simple lead-acid battery (voltage higher than 10.8V) 300A discharge is only 5s, -45 ℃ Under the condition of 439A pulse, 50A charge and discharge cycle, a 5s 300A pulse every 5 minutes during discharge, it has a capacity of 55% at 500 times. The 12V units are used to form a 600V system for pure electric buses. The energy recovery rate is 21%. After half a year of operation, the highest voltage is 2.43V and the lowest voltage is 2.39V.

[0019] It can be seen from the above examples that, taking a 100Ah lead-acid battery as an example, connecting it in pa...

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Abstract

The invention discloses a super capacitor and lead-acid cell mixed chemical power supply. The power supply comprises a lead-acid cell monomer and an organic electric double layer super capacitor which are directly connected in parallel into a mixed monomer, and six mixed monomers are connected in series to form a 12V mixed power supply unit. The power supply system is a passive mixed power supply system that the super capacitor is directly connected in parallel with the lead-acid cell; no control element is required between the super capacitor and the lead-acid cell; the lead-acid cell provides a function of voltage threshold protection for the super capacitor which is connected in parallel with the lead-acid cell to ensure that the super capacitor does not require a voltage threshold protective element; and the super capacitor shares the condition of high-power pulse discharge for the lead-acid cell to avoid high current impact of the lead-acid cell and greatly prolong the service life of the lead-acid cell. The power supply can be widely applied in the fields of electric bicycles, electric motorcycles, golf buggies, automobile starting, electric vehicles and the like.

Description

technical field [0001] The invention relates to a hybrid power supply system, in particular to a hybrid chemical power supply of a supercapacitor and a lead-acid battery. Background technique [0002] Lead-acid battery is the most mature chemical power source so far. It has low production cost and good safety. It is currently the most widely used chemical power source. It has been widely used in electric bicycles, electric motorcycles, golf carts, automobiles Starting and UPS and other fields, but due to the short cycle life of lead-acid batteries, especially under the impact of high current, the frequency of battery replacement in the above application fields is very high. Secondly, the lead-acid battery has poor high-current discharge performance at low temperature, and the starting performance at low temperature is limited. [0003] Supercapacitor is a new type of electrochemical energy storage device between traditional capacitors and batteries. Compared with traditiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M12/00H01G9/28H01G9/155H01G9/08B60L11/18H01G11/08
CPCY02T10/7016Y02T10/7022Y02E60/128Y02E60/13Y02T10/70
Inventor 安仲勋曹小卫吴明霞钱辉原敏
Owner SHANGHAI AOWEI TECH DEV
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