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Electric vehicle battery plate

A technology for electric vehicle batteries and plates, applied to the electrodes of lead-acid batteries, etc., can solve problems such as limitations, and achieve the effect of increasing the electrochemical reaction area and improving the performance of high-current discharge

Active Publication Date: 2017-03-15
ANHUI ZHONGNENG POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In principle, the lower the MS value, the better the high current characteristics of the battery, but it is also limited by the α value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An electric vehicle battery plate, including a positive plate and a negative plate, characterized in that: the external dimensions of the positive plate are 66.5mm wide; 143mm high; 2.06mm thick; its α value is 1:13; MS value is 3.5 g / cm 2 , which increases the electrochemical reaction area and improves the high-current discharge performance of the battery; the external dimensions of the negative plate are 66.5mm wide; 144mm high; 1.42mm thick; the α value is 1:11; the MS value is 2.3g / cm 2 , increasing the electrochemical reaction area and improving the high-current discharge performance of the battery. Among them, the α value represents the ratio of the mass of the grid to the mass of the active material, and the MS value represents the amount of active material carried on the unit grid area.

Embodiment 2

[0023] Such as figure 1 , figure 2 As shown, a storage battery prepared by using the plates of Example 1 includes a battery case 1, a positive plate 2, a negative plate 3, and a separator 4, and the positive plate 2, the negative plate 3, and the separator 4 are arranged inside the battery case 1, The inside of the battery case 1 is divided into 6 cells, each cell is equipped with five positive plates 2 and six negative plates 3, the positive plates 2 and the negative plates 3 are stacked alternately, and the gap between the positive plates 2 and the negative plates 3 The isolation is done by the separator 4. Positive plate 2 and negative plate 3 are key components. The thickness of positive plate 2 and negative plate 3 plays a decisive factor in the assembly of the battery, so as to increase the effective reaction area of ​​the active material on the plate and improve the utilization rate of the active material. The external dimensions of the positive plate 2 It is: width ...

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Abstract

A high-performance electric vehicle battery electrode plate includes a positive plate and a negative plate. The size of the positive plate is 66.5 mm in width, 143 mm in height and 2.06 mm in thickness, the [alpha] value of the positive plate is 1:13 and the MS value of the positive plate is 3.5 g / cm<2>, thereby increasing the electrochemical reaction area and further improving high-current discharge performance of the battery. The size of the negative plate is 66.5 mm in width, 144 mm in height and 1.42 mm in thickness, the [alpha] value of the positive plate is 1:11 and the MS value of the positive plate is 2.3 g / cm<2>, thereby increasing the electrochemical reaction area and further improving high-current discharge performance of the battery. According to the invention, during design of the polar plates, by means of accurate design of the [alpha] value and the MS value and improvement of shape structure and design with combination of the shape and structure of the battery, the electrochemical reaction area of the plates can be increased, and further the high-current discharge performance of the battery is enhanced and circulating service life of the battery is prolonged.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a high-performance electric vehicle battery pole plate. Background technique [0002] Lead-acid batteries have a history of 130 years. They have the advantages of reliable performance, mature production technology, and lower cost than nickel-metal hydride batteries and lithium batteries. The vast majority of current electric vehicles use sealed lead-acid batteries. The sealed lead-acid battery is to stack the positive and negative plates in the battery box, and the positive and negative plates are separated by insulating separators. When the electrolyte is charged into the battery box, the electrolyte and the positive and negative plates lead chemical reaction. When the battery is charged, the lead on the positive and negative plates that become lead sulfate releases the sulfuric acid component fixed in it into the electrolyte, and turns into lead and lead oxide res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/14
CPCH01M4/14Y02E60/10
Inventor 杨新明肖林李超雄王子清杨振印
Owner ANHUI ZHONGNENG POWER SUPPLY CO LTD
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