Charging battery pack for electric vehicle and method of production

A production method and technology of battery packs, applied in electric vehicles, battery pack parts, secondary batteries, etc., can solve the problems of low energy density of lead-acid batteries, limited effect, increase the weight and volume of lead-acid batteries, etc., and achieve excellent Large battery discharge performance, short battery life and excellent cycle performance

Inactive Publication Date: 2008-01-30
SHANGHAI FUYAN ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the energy density of lead-acid batteries is low, and the cruising distance of electric vehicles is short
In order to increase the cruising distance, the weight and volume of the lead-acid battery must be greatly increased, but the effect of the increase is very limited, so it cannot be used in many electric vehicles

Method used

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  • Charging battery pack for electric vehicle and method of production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Using a known production process, a lead-acid battery with a capacity of 10Ah is produced, and then 18 of the lead-acid batteries are connected in series, and a protective circuit board is added to form a lead-acid battery pack with an average output voltage of 36V. Then, a known production process is used to produce a lithium-ion battery with a capacity of 10Ah, and then 10 lithium-ion batteries are connected in series, and a protective circuit board is added to form a lithium-ion battery pack with an average output voltage of 36V. Combining the above-mentioned lead-acid battery pack with the lithium-ion battery pack yields a rechargeable battery pack. The structure of the rechargeable battery pack is shown in Figure 1. Both the lead-acid battery pack and the lithium-ion battery pack are connected to the motor of the electric vehicle.

[0036] The performance of the battery pack is as follows: when the rechargeable battery pack is incorporated into the electric bicycle...

Embodiment 2

[0038] Using a known production process, a lead-acid battery with a capacity of 20Ah is produced, and then 18 of the lead-acid batteries are connected in series, and a protective circuit board is added to form a lead-acid battery pack with an average output voltage of 36V. Then, a known production process is used to produce a lithium-ion battery with a capacity of 20Ah, and then 10 lithium-ion batteries are connected in series, and a protective circuit board is added to form a lithium-ion battery pack with an average output voltage of 36V. Combining the above-mentioned lead-acid battery pack with the lithium-ion battery pack yields a rechargeable battery pack. Both lead-acid and lithium-ion battery packs are connected to the electric vehicle's electric motor.

[0039] The performance of the battery pack is as follows: when the rechargeable battery pack is incorporated into the electric motorcycle, when starting, climbing, and accelerating, it is mainly powered by the lead-acid...

Embodiment 3

[0041] Using a known production process, a lead-acid battery with a capacity of 20Ah is produced, and then 36 of the lead-acid batteries are connected in series, and a protective circuit board is added to form a lead-acid battery pack with an average output voltage of 72V. Then, a known production process is used to produce a lithium-ion battery with a capacity of 20Ah, and then 20 of the lithium-ion batteries are connected in series, and a protective circuit board is added to form a lithium-ion battery pack with an average output voltage of 72V. Combining the above-mentioned lead-acid battery pack with the lithium-ion battery pack yields a rechargeable battery pack. Both lead-acid and lithium-ion battery packs are connected to the electric vehicle's electric motor.

[0042] The performance test of this battery pack is as follows. The rechargeable battery pack is incorporated into the electric tricycle. When starting, climbing, and accelerating, it is mainly powered by the le...

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PUM

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Abstract

The invention provides a charging battery pack and a production method for electric vehicles. A mixed charging battery pack is made from a lead-acid battery and a lithium-ion battery to organically integrate the cheap price and good large battery discharge performance of the lead-acid battery, and the good cycle performance and the high capacity density of the lithium-ion battery, which not only solves the problems of the bad starting performance, bad acceleration, bad climbing ability, and extremely high price for electric vehicles with the lead-acid battery, but also solves the problems of short sustained distance and low capacity density for electric vehicles with the lithium-ion battery.

Description

technical field [0001] The invention relates to a rechargeable battery pack for an electric vehicle and a production method thereof. Background technique [0002] Current electric vehicles include electric vehicles such as electric bicycles, electric motorcycles, electric tricycles, and electric cars. In the electric vehicles mentioned above, rechargeable batteries currently available include Ni-Cd rechargeable batteries, lead-acid batteries, Ni-MH batteries and lithium-ion batteries. Due to the problems of low weight density and high environmental pollution, Ni-Cd rechargeable batteries have been greatly restricted, and are no longer used in civilian products. [0003] Among Ni-MH batteries and lithium-ion batteries, the performance / price ratio of the latter has an advantage, because the average voltage of the latter is 3.6V, while the average voltage of the former is 1.2V, so lithium-ion batteries have the most competitive advantage. At the same time, the capacity densit...

Claims

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Application Information

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IPC IPC(8): H01M10/00H01M10/06H01M10/40H01M2/10H01M2/34H01M10/42B60L11/18B60K1/04H01M50/244H01M50/249H01M50/509H01M50/519H01M50/59
CPCY02E60/122Y02T10/7011Y02T10/7016Y02E60/126Y02E60/10Y02T10/70
Inventor 吴宇平戴兴生
Owner SHANGHAI FUYAN ENERGY TECH
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