CN-224204126-U - 1.5V lithium battery with built-in pressure reducing plate

Abstract

The utility model discloses a 1.5V lithium battery with a built-in voltage reducing plate, which comprises a cap assembly, a winding battery core assembly, an electrolyte, a metal shell and an insulating sleeve, wherein the insulating sleeve is coated outside the metal shell, the winding battery core assembly and the cap assembly are sequentially arranged in the metal shell from bottom to top, a rolling groove is inwards arranged at the upper end of the metal shell, a sealing buckling edge capable of inwards bending is arranged at the top of the metal shell, the rolling groove limits the winding battery core assembly to the inner side of the metal shell below the rolling groove of the metal shell, the electrolyte is arranged in the winding battery core assembly at the inner side of the metal shell, the cap assembly comprises the voltage reducing plate, the cap assembly is arranged at the inner side of the metal shell at the upper side of the rolling groove and is inwards extruded and fixed by the sealing buckling edge, and a plastic sealing ring of the cap assembly realizes sealing between the cap assembly and the metal shell. The utility model has high processing efficiency, reduces cost and effectively improves battery capacity.

Inventors

• WEI XIAOMA

Assignees

• 柳州市华以新能源科技有限公司

Dates

Publication Date

20260505

Application Date

20250423

Claims (3)

1. 1. The utility model provides a built-in 1.5V lithium cell of falling plate, includes block subassembly (7), coiling electricity core subassembly (22), electrolyte, metal casing (1) and insulating tube, and insulating tube cladding is outside metal casing (1), its characterized in that, coiling electricity core subassembly (22) and block subassembly (7) are put into metal casing (1) in proper order from supreme down, metal casing (1) is inwards equipped with rolling groove (6) by the upper end, and metal casing (1) top is equipped with sealing knot limit (8) that can inwards buckle, rolling groove (6) are with coiling electricity core subassembly (22) limit in metal casing (1) rolling groove (6) below metal casing (1) inboard, and the electrolyte sets up in metal casing (22) of metal casing (1) inboard, including falling plate (4) in block subassembly (7), block subassembly (7) set up in metal casing (1) inboard of rolling groove (6) upside and by sealing knot limit (8) inwards extrude fixed subassembly (7), seal between block subassembly (7) and the sealing washer (1) of plastic casing (7).
2. 2. The lithium battery with the built-in pressure reducing plate as claimed in claim 1, wherein the cap assembly (7) further comprises a plastic sealing ring (2), an explosion-proof valve (3) and a steel cap (5), the pressure reducing plate (4) of the cap assembly (7) comprises a PCB (10), a positive electrode ring (16), a positive electrode outer ring (9), a negative electrode ring (13), an IC (15), an inductor (11), a capacitor (12) and an indicator lamp (14), the IC (15), the inductor (11), the capacitor (12) and the indicator lamp (14) are respectively connected to the PCB (10), the positive electrode ring (16) is arranged on the upper surface of the PCB (10), a circle of insulating layer is surrounded on the outer side of the positive electrode ring (16), the negative electrode ring (13) is surrounded on the insulating layer, the positive electrode outer ring (9) is arranged on the bottom surface of the PCB (10) and is electrically connected with the positive electrode ring (16) on the upper surface of the PCB (10), the steel cap (5) is connected with the positive electrode ring (16) on the upper surface of the PCB (10), the explosion-proof valve (3) is connected with the bottom surface of the PCB (10) and the positive electrode ring (9) on the inner side of the PCB (4) respectively, the explosion-proof valve (16) is positioned on the outer ring (2), the sealing buckling edge (8) of the metal shell (1) is connected with the negative electrode ring (13) of the PCB (10).
3. 3. The 1.5V lithium battery with the built-in pressure reducing plate according to claim 2, wherein the winding battery core assembly (22) comprises a winding battery core (18), a positive electrode tab (17), a negative electrode tab (19), an upper insulating gasket (20) and a lower insulating gasket (21), the upper insulating gasket (20) is connected to the upper end face of the winding battery core (18), the positive electrode tab (17) is arranged in the middle of the winding battery core (18), the positive electrode tab (17) penetrates out of a central hole of the upper insulating gasket (20) and is connected with the bottom end of an explosion-proof valve (3) of the cap assembly (7), the negative electrode tab (19) is folded to the bottom face from the side face of the winding battery core (18), a lower insulating gasket (21) is arranged between the bottom face of the winding battery core (18) and the negative electrode tab (19), and the lower end part of the negative electrode tab (19) is connected with the bottom of the metal shell (1) through welding.

Description

1.5V lithium battery with built-in pressure reducing plate Technical Field The utility model relates to a lithium battery, in particular to a 1.5V lithium battery with a built-in pressure reducing plate. Background The 1.5V battery is widely applied to various fields including electric toothbrushes, shavers, wireless microphones, toys and the like, and the 1.5V battery is mainly an alkaline battery and a nickel-hydrogen battery, and the two batteries are convenient to use, but have short service life and low capacity, can only be used once, can be discarded after being used up, and can cause environmental pollution and are not environment-friendly. For such circumstances, some rechargeable batteries capable of being recycled are also appeared on the market, such as 1.5V lithium batteries, the structure of the existing 1.5V lithium batteries can be referred to as a constant voltage 1.5V lithium battery described in the chinese patent with patent application number 202022509514.3, although the overall performance of the 1.5V lithium batteries is good, the existing lithium batteries need to put a battery core into a battery shell, a nickel plate and a battery core anode are welded by spot welding, a lithium battery protection plate and a sealing ring are put into the battery shell, the battery core needs to be externally provided with the lithium battery protection plate by a secondary processing mode, and the existing lithium batteries are complex in processing procedure, low in efficiency and high in cost, meanwhile, because the battery core and a connecting element need to be assembled in the battery shell, part of space can be occupied, the volume of the battery core can be correspondingly smaller when the volume of the battery shell is inconvenient, and the battery capacity can be reduced when the volume of the battery core is small. Disclosure of Invention The utility model aims to overcome the defects in the prior art and provide a 1.5V lithium battery with a built-in pressure reducing plate, which has high processing efficiency, reduces cost and effectively improves battery capacity. The technical scheme includes that the 1.5V lithium battery with the built-in voltage reducing plate comprises a cap assembly, a winding battery core assembly, electrolyte, a metal shell and an insulating sleeve, wherein the insulating sleeve is coated outside the metal shell, the winding battery core assembly and the cap assembly are sequentially arranged in the metal shell from bottom to top, a rolling groove is formed in the upper end of the metal shell inwards, a sealing buckling edge capable of inwards bending is formed in the top of the metal shell, the rolling groove limits the winding battery core assembly to the inner side of the metal shell below the rolling groove of the metal shell, the electrolyte is arranged in the winding battery core assembly on the inner side of the metal shell, the voltage reducing plate is arranged in the cap assembly, the cap assembly is arranged on the inner side of the metal shell on the upper side of the rolling groove and is fixedly extruded by the sealing buckling edge inwards, and a plastic sealing ring of the cap assembly realizes sealing between the cap assembly and the metal shell. The utility model further adopts the technical scheme that the cap assembly further comprises a plastic sealing ring, an explosion-proof valve and a steel cap, the pressure reducing plate of the cap assembly comprises a PCB, an anode ring, an anode outer ring, a cathode ring, an IC, an inductor, a capacitor and an indicator lamp, the IC, the inductor, the capacitor and the indicator lamp are respectively connected to the PCB, the anode ring is arranged on the upper surface of the PCB, a circle of insulating layer is surrounded on the outer side of the anode ring, the cathode ring is surrounded on the insulating layer, the anode outer ring is arranged on the bottom surface of the PCB and is in conductive connection with the anode ring on the upper surface, the steel cap is connected with the anode ring on the upper surface of the PCB, the explosion-proof valve is connected with the anode outer ring on the bottom surface of the PCB, the assembly formed by connecting the explosion-proof valve and the pressure reducing plate is positioned on the inner side of the plastic sealing ring, and the sealing buckling edge of the metal shell is connected with the cathode ring of the PCB. The winding battery core assembly comprises a winding battery core, a positive electrode tab, a negative electrode tab, an upper insulating gasket and a lower insulating gasket, wherein the upper insulating gasket is connected to the upper end face of the winding battery core, the positive electrode tab is arranged in the middle of the winding battery core, the positive electrode tab penetrates out of a central hole of the upper insulating gasket and is connected with the bottom end of an explosion-proof valve of the cap assembly