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Lead-acid storage battery and silica gel for filling in lead-acid storage battery

A lead-acid battery, silicon gel technology, applied in lead-acid battery, lead-acid battery construction, secondary battery and other directions, can solve the problems of rapid battery capacity decay, thermal runaway battery heating, small electrolyte capacity, etc., to avoid Thermal runaway phenomenon, delayed capacity decay, effect of high assembly pressure

Inactive Publication Date: 2017-03-22
ANHUI LEOCH BATTERY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the weight and volume of the separator between the positive and negative electrodes in the lead-acid battery is limited, and its adsorption capacity for the electrolyte is small, which makes the electrolyte capacity in the lead-acid battery small, and the temperature rise is large during charging and discharging. The problem of thermal runaway (battery heating and damage) occurs, resulting in rapid early capacity decay and premature failure of the battery

Method used

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  • Lead-acid storage battery and silica gel for filling in lead-acid storage battery
  • Lead-acid storage battery and silica gel for filling in lead-acid storage battery
  • Lead-acid storage battery and silica gel for filling in lead-acid storage battery

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Embodiment 1

[0021] The invention provides a battery of a lead-acid storage battery. The interior of the lead-acid storage battery includes a three-dimensional network structure made of silicon gel, which is used to contain electrolyte in the voids of the three-dimensional network structure. The schematic diagram of the internal structure of the battery is as follows: figure 1 shown.

[0022] In actual implementation, the three-dimensional network structure may be a honeycomb structure.

[0023] combine figure 2 and image 3 ,in, figure 2 It is a schematic diagram of the front structure inside the lead-acid battery, image 3 It is a schematic diagram of the side structure inside the lead-acid battery, such as figure 2 and image 3 As shown, the lead-acid battery includes a three-dimensional network structure 201, and also includes a separator, a positive plate 204, and a negative plate (202 and 203). The three-dimensional network structure 201 is located between the negative plat...

Embodiment 2

[0044] Embodiment 2 of the present invention provides a silicone gel for filling lead-acid batteries, the silicone gel is used to form a three-dimensional network structure inside the lead-acid battery, so that the electrolyte is stored in the three-dimensional network structure In the voids, the composition of the silica gel is fumed silica SiO 2 , sulfuric acid H 2 SO 4 and water H 2 O, where gas phase SiO 2 :H 2 SO4 :H 2 O is prepared according to the ratio of (2~10):(100~150):(10~50).

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Abstract

The embodiment of the invention provides a lead-acid storage battery. The interior of the lead-acid storage battery comprises a three-dimensional network structure formed by silica gel, and is used for containing electrolyte into gaps of the three-dimensional network structure. On one hand, compared with a common storage battery, the filling volume of the electrolyte in the lead-acid storage battery can be increased by 5%-8% due to the three-dimensional network structure, so the lead-acid storage battery is large in hot melting and small in temperature rise during charging and discharging, and the thermal runaway phenomenon generated by the common storage battery can be avoided; on the other hand, a higher assembling pressure provided by the three-dimensional network structure can ensure the higher capacity of the battery. In addition, the structures of active substances of the battery can be effectively locked and do not change due to the supporting effect of the three-dimensional network structure, the electrolyte filling in the battery has no stratification phenomenon, and accordingly the battery capacity fading is slowed down. The embodiment of the invention further provides the silica gel filling in the lead-acid storage battery.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a lead-acid battery and silicone gel for filling the lead-acid battery. Background technique [0002] A lead-acid battery is a battery whose electrolyte is a sulfuric acid solution. However, the weight and volume of the separator between the positive and negative electrodes in the lead-acid battery is limited, and its adsorption capacity for the electrolyte is small, which makes the electrolyte capacity in the lead-acid battery small, and the temperature rise is large during charging and discharging. The problem of thermal runaway (battery heating and damage) occurs, resulting in rapid early capacity decay and premature failure of the battery. Not only that, when the lead-acid battery is placed on hold, due to the influence of natural sedimentation, the density of sulfuric acid at the top of the battery is lower than that at the bottom, which often causes stratification of the electroly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/12H01M10/42
CPCH01M10/12H01M10/4235Y02E60/10Y02P70/50
Inventor 林晓东魏士洋南祖社
Owner ANHUI LEOCH BATTERY TECH