Patent classifications
H01M4/21
BATTERY ELECTRODE PLATE PREPARATION METHOD
A new type of battery electrode plate preparation method is described. The method can include the following steps: a) a mixing process; b) a milling and polishing process; c) an extrusion shearing and extending process; d) cutting to obtain an electrode membrane; and e) pressing at a high temperature and a high pressure to obtain a battery electrode plate. The method can adopt the active material of different electrochemical batteries as the main body to prepare a thick type battery electrode plate with a high conductivity, a high capacity and a high active material loading, which has a viscoelastic body. The electrode plate can have a flexible organic network structure and an excellent mechanical strength, and can still exist in a variety of electrolytes after hundreds of times or even thousands of times of deep charge and discharge cycles. The thick electrode plate prepared by using the method can be applied to a variety of batteries such as lead-acid battery positive and negative electrode plates, a lead carbon battery electrode plate, a lithium ion battery electrode plate, a supercapacitor electrode plate, a Ni-MH battery electrode plate, and others.
BATTERY ELECTRODE PLATE PREPARATION METHOD
A new type of battery electrode plate preparation method is described. The method can include the following steps: a) a mixing process; b) a milling and polishing process; c) an extrusion shearing and extending process; d) cutting to obtain an electrode membrane; and e) pressing at a high temperature and a high pressure to obtain a battery electrode plate. The method can adopt the active material of different electrochemical batteries as the main body to prepare a thick type battery electrode plate with a high conductivity, a high capacity and a high active material loading, which has a viscoelastic body. The electrode plate can have a flexible organic network structure and an excellent mechanical strength, and can still exist in a variety of electrolytes after hundreds of times or even thousands of times of deep charge and discharge cycles. The thick electrode plate prepared by using the method can be applied to a variety of batteries such as lead-acid battery positive and negative electrode plates, a lead carbon battery electrode plate, a lithium ion battery electrode plate, a supercapacitor electrode plate, a Ni-MH battery electrode plate, and others.
Silicon current collector for lead acid battery
Apparatus and techniques are described herein for providing a battery plate assembly including a silicon current collector. The silicon current collector can include apertures. A lead layer or lead alloy layer can be formed on the silicon current collector. A monopolar battery assembly can be provided, such as including monopolar battery plate assemblies comprising silicon current collectors. The silicon can include a conductive metallurgical grade silicon, such as cast and cut to provide individual current collector substrates.
Silicon current collector for lead acid battery
Apparatus and techniques are described herein for providing a battery plate assembly including a silicon current collector. The silicon current collector can include apertures. A lead layer or lead alloy layer can be formed on the silicon current collector. A monopolar battery assembly can be provided, such as including monopolar battery plate assemblies comprising silicon current collectors. The silicon can include a conductive metallurgical grade silicon, such as cast and cut to provide individual current collector substrates.
PASTING PAPER FOR BATTERIES COMPRISING MULTIPLE FIBER TYPES
Articles and methods involving pasting papers are generally provided. In certain embodiments, a pasting paper may comprise a plurality of cellulose fibers, a plurality of multicomponent fibers, and a plurality of glass fibers. In some embodiments, the average fiber diameter of each plurality of fibers is greater than or equal to 1 micron. In some embodiments, a pasting paper may have a thickness of less than 0.2 mm, an air permeability of less than or equal to 300 CFM, a 1.28 spg sulfuric acid wicking height of greater than 3 cm, and/or may be configured to have a dry tensile strength in a machine direction of greater than or equal to 1 lb/in after storage in 1.28 spg sulfuric acid at 75 C. for 168 hours. In some embodiments, a pasting paper may be disposed on a battery paste, such as a battery paste for use in a lead-acid battery. In certain cases, forming a battery plate may comprise disposing a pasting paper on a battery paste. In certain cases, a lead-acid battery may be assembled by assembling a first battery plate comprising a pasting paper with a separator and a second battery plate.
PASTING PAPER FOR BATTERIES COMPRISING MULTIPLE FIBER TYPES
Articles and methods involving pasting papers are generally provided. In certain embodiments, a pasting paper may comprise a plurality of cellulose fibers, a plurality of multicomponent fibers, and a plurality of glass fibers. In some embodiments, the average fiber diameter of each plurality of fibers is greater than or equal to 1 micron. In some embodiments, a pasting paper may have a thickness of less than 0.2 mm, an air permeability of less than or equal to 300 CFM, a 1.28 spg sulfuric acid wicking height of greater than 3 cm, and/or may be configured to have a dry tensile strength in a machine direction of greater than or equal to 1 lb/in after storage in 1.28 spg sulfuric acid at 75 C. for 168 hours. In some embodiments, a pasting paper may be disposed on a battery paste, such as a battery paste for use in a lead-acid battery. In certain cases, forming a battery plate may comprise disposing a pasting paper on a battery paste. In certain cases, a lead-acid battery may be assembled by assembling a first battery plate comprising a pasting paper with a separator and a second battery plate.
Core-shell particles based on red lead for lead-acid batteries
Core-shell particles may be based on red lead coated with pyrogenically produced titanium dioxide and/or a pyrogenically produced aluminum oxide, and a process may prepare such core-shell particles which may be used in lead-acid batteries. The red lead may include PbO.sub.2 in a range of from 25 to 32 wt. %.
Core-shell particles based on red lead for lead-acid batteries
Core-shell particles may be based on red lead coated with pyrogenically produced titanium dioxide and/or a pyrogenically produced aluminum oxide, and a process may prepare such core-shell particles which may be used in lead-acid batteries. The red lead may include PbO.sub.2 in a range of from 25 to 32 wt. %.
Lead-acid battery
A lead-acid battery includes an electrode plate assembly, a battery case, a positive electrode strap, a negative electrode strap, a positive electrode post, a negative electrode post, a cover, and an electrolyte solution. A negative electrode bushing provided in the cover and the negative electrode post together constitute a negative electrode terminal. A maximum value of a gap between an outer circumferential surface of the negative electrode post and an inner circumferential surface of the negative electrode bushing in the negative electrode terminal is 0.5 mm or more and 2.5 mm or less. A rib is provided in a lower part of the negative electrode bushing, and a minimum value of a protrusion height of the rib is 1.5 mm or more and 4.0 mm or less. A distance between a surface of the electrolyte solution and a lowermost portion of the negative electrode bushing is 15 mm or less.
Lead-acid battery
A lead-acid battery includes an electrode plate assembly, a battery case, a positive electrode strap, a negative electrode strap, a positive electrode post, a negative electrode post, a cover, and an electrolyte solution. A negative electrode bushing provided in the cover and the negative electrode post together constitute a negative electrode terminal. A maximum value of a gap between an outer circumferential surface of the negative electrode post and an inner circumferential surface of the negative electrode bushing in the negative electrode terminal is 0.5 mm or more and 2.5 mm or less. A rib is provided in a lower part of the negative electrode bushing, and a minimum value of a protrusion height of the rib is 1.5 mm or more and 4.0 mm or less. A distance between a surface of the electrolyte solution and a lowermost portion of the negative electrode bushing is 15 mm or less.