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Composite current collector of lead-acid storage battery and battery

A technology of lead-acid batteries and current collectors, which is applied in the direction of lead-acid batteries, battery electrodes, electrode carriers/collectors, etc. It can solve problems such as unsatisfactory mechanical properties, complicated electroplating procedures, and difficult quality control, so as to save time and energy. Improvement of performance in various aspects and the effect of avoiding lead pollution

Inactive Publication Date: 2021-02-02
杨春晓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current collector of lead-acid battery is an important part of the electrode. It mainly plays the role of conducting electricity, supporting and fixing the active material, and also needs to have good properties such as good corrosion resistance and convenient production and manufacturing; it is purely made of lead or lead alloy. Lead-acid battery current collectors have been widely used in the positive and negative electrodes of lead-acid batteries. , and make the specific energy, capacity, and high-current discharge performance of the lead-acid battery significantly improved. Applied only in special cases

Method used

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  • Composite current collector of lead-acid storage battery and battery
  • Composite current collector of lead-acid storage battery and battery
  • Composite current collector of lead-acid storage battery and battery

Examples

Experimental program
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Effect test

Embodiment 1

[0131] The composite current collector of the lead-acid storage battery in this embodiment includes lead or lead alloy lead skin, carrier plastic plate, lightweight conductor aluminum sheet, and anti-corrosion layer lead sheet, wherein, each of the aluminum sheet and the anti-corrosion layer lead sheet has 2 piece. In the current collector, such as figure 1 As shown, the lead skin 1 includes grid body 2 and solid plane body 3, 4, 5 in its sheet body, and solid plane body 3, 4, 5 is connected with grid body 2 to form a whole, and solid plane body The bodies 3 and 4 are parallel to each other in the length direction (in the vertical direction in the figure), and their length direction is also the length direction of the current collector. The bodies 3 and 4 are connected, the lug connection area 6 is connected to the connection ends of the solid planar bodies 3 and 5 , and the solid planar bodies are also connected to each other through the grid body 2 . In this embodiment, th...

Embodiment 2

[0145] The difference from Example 1 is that, as Figure 6 As shown, the composite current collector of this embodiment includes a lead skin 1 and a carrier plastic plate 12, both of which are in contact and connected, and the plastic plate 12 acts as a mechanical load, support, fixation and skeleton for the lead skin 1.

[0146] optional, such as Figure 7 As shown, the thickness of the part 20 of the lead skin 1 that is closer to the tab is greater than the thickness of the part 21 that is farther from the tab, which is conducive to reducing the lead skin 1 as much as possible while meeting the requirements of current distribution and current transmission. weight and dosage.

[0147] Optionally, only one side surface (partial surface) of the carrier plastic plate 12 contacts and connects with one side surface of the lead skin 1 , and the lead skin 1 does not wrap and seal the entire surface of the carrier plastic plate 12 .

[0148] Optionally, the lead skin 1 wraps and se...

Embodiment 3

[0150] The difference from Example 1 is that, as Figure 8 As shown, there is no anti-corrosion layer to protect the light conductor aluminum sheet 7 in the composite current collector of this embodiment, the aluminum sheet 7 is conductively connected with the solid plane body 3 of the lead skin, and is also in contact with the carrier plastic plate 12, the lead The bonding area formed by bonding the solid plane body 3 of the skin and the plastic plate 12 to each other, and the solid plane body 3 of the lead skin enable the aluminum sheet 7 to be sealed and sealed in the closed space in the current collector, and the aluminum sheet 7 is sealed with the outer surface of the current collector. The environment space is disconnected and isolated.

[0151] Optionally, the lightweight conductor aluminum sheet 7 in this embodiment may be replaced by a lightweight conductor copper sheet or a graphene sheet.

[0152] Optionally, between the surface of the solid plane body 3 of the lea...

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Abstract

The invention discloses a composite current collector of a lead-acid storage battery. The composite current collector comprises a lead sheath and a bearing body; the lead sheath is combined with the bearing body; the bearing body has the effects of mechanical bearing, supporting, fixing and a framework on the lead sheath; the lead sheath is made of lead or lead alloy, lead or lead alloy compositematerial; the bearing body is made of but not limited to the following materials: plastic, a plastic composite material, titanium and a titanium composite material; the composite current collector canalso comprise a light conductor which is conductively connected with the lead sheath. The invention also discloses a lead-acid storage battery comprising the composite current collector. According tothe composite current collector disclosed by the invention, the weight of the current collector of the lead-acid storage battery, and the usage amount and the cost of the lead material can be greatlyreduced, and the conductivity of the current collector can be improved; the lead-acid storage battery disclosed by the invention has remarkably improved properties in multiple aspects, such as specific energy, capacity, high-current charging and discharging capacity, internal resistance, lead usage amount and cost.

Description

technical field [0001] The invention relates to a current collector and a battery, in particular to a lead-acid storage battery composite current collector and a lead-acid storage battery. Background technique [0002] The current collector of lead-acid battery is an important part of the electrode. It mainly plays the role of conducting electricity, supporting and fixing the active material, and also needs to have good properties such as good corrosion resistance and convenient production and manufacturing; it is purely made of lead or lead alloy. Lead-acid battery current collectors have been widely used in the positive and negative electrodes of lead-acid batteries. , and make the specific energy, capacity, and high-current discharge performance of the lead-acid battery significantly improved. It can only be applied in special occasions. On the other hand, the polarity reversal of the positive and negative poles of the lead-acid battery and the subsequent charge and dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66H01M4/68H01M10/06
CPCH01M4/667H01M4/68H01M4/685H01M10/06Y02E60/10
Inventor 杨春晓
Owner 杨春晓
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