CN115000605B - Lithium battery with intelligent charging protection structure - Google Patents

Lithium battery with intelligent charging protection structure Download PDF

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Publication number
CN115000605B
CN115000605B CN202210702251.9A CN202210702251A CN115000605B CN 115000605 B CN115000605 B CN 115000605B CN 202210702251 A CN202210702251 A CN 202210702251A CN 115000605 B CN115000605 B CN 115000605B
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CN
China
Prior art keywords
lithium battery
mounting groove
mounting
splash guard
lithium
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Active
Application number
CN202210702251.9A
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Chinese (zh)
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CN115000605A (en
Inventor
唐玉银
张荣生
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Kurz Electronic Technology Nantong Co ltd
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Kurz Electronic Technology Nantong Co ltd
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Priority to CN202210702251.9A priority Critical patent/CN115000605B/en
Publication of CN115000605A publication Critical patent/CN115000605A/en
Application granted granted Critical
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • H01M10/443Methods for charging or discharging in response to temperature
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/572Means for preventing undesired use or discharge
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention relates to the technical field of lithium batteries, in particular to a lithium battery with an intelligent charging protection structure, which comprises a lithium battery shell, wherein sliding grooves are formed in the front side and the rear side of the upper surface of the lithium battery shell, wiring terminal protection structures are slidably arranged in the sliding grooves, wiring terminals are arranged on the left side and the right side of the upper surface of the lithium battery shell, a threaded column is movably arranged in the middle of the upper surface of the lithium battery shell, a threaded sleeve is arranged on the outer side of the threaded column in a threaded penetrating manner, supporting rods are movably arranged on the front side and the rear side of the threaded sleeve, and one end, far away from the threaded sleeve, of each supporting rod is movably arranged on the upper surface of the wiring terminal protection structure. The invention is convenient for outdoor charging and use, protects the lithium battery, improves the safety of the lithium battery, can stop charging in time when the internal temperature of the lithium battery is too high, and can effectively prevent the lithium battery from expanding or even exploding due to charging.

Description

Lithium battery with intelligent charging protection structure
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a lithium battery with an intelligent charging protection structure.
Background
The lithium battery is a battery using a nonaqueous electrolyte solution and using lithium metal or lithium alloy as a positive/negative electrode material, and the lithium metal has very high requirements on environment due to the very active chemical characteristics of the lithium metal.
At present, the internal temperature of the battery can be increased in the charging process of the lithium battery, so that expansion and even explosion can occur when a plurality of lithium batteries are charged, the safety is poor, most of the existing lithium batteries are not suitable for outdoor use or charging, the use conditions are harsh, and the practicability of the lithium batteries is reduced. Therefore, we propose a lithium battery with an intelligent charging protection structure.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides the lithium battery with the intelligent charging protection structure, which is convenient for outdoor charging and use, protects the lithium battery, improves the safety of the lithium battery, can stop charging in time when the internal temperature of the lithium battery is too high, and can effectively prevent the expansion or even explosion of the lithium battery due to charging.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a lithium cell with intelligent charge protection architecture, includes the lithium cell casing, the spout has all been seted up to the front and back both sides of the upper surface of lithium cell casing, spout internally sliding mounting has wiring end protection architecture, the wiring end is all installed on lithium cell casing upper surface left and right sides, surface mounting has the screw thread post on lithium cell casing upper surface middle part movable mounting, screw thread post outside screw thread runs through and installs the thread bush, both sides all movable mounting has the bracing piece around the thread bush, the one end movable mounting that the thread bush was kept away from to the bracing piece is at wiring end protection architecture upper surface, first mounting groove has been seted up on lithium cell casing right side, the connecting rod is installed on the thread bush right side, connecting rod movable penetration lithium cell casing is inside first mounting groove, a plurality of tooth teeth are installed on the connecting rod right side, first mounting groove internally mounted has waterproof construction, lithium cell casing right side lower part movable mounting has the waterproof board, the wire casing has been seted up on the surface, the second mounting groove has been seted up to the screw thread bush on lithium cell casing right side lower part, second mounting groove left side installs the one end movable mounting groove, the one end movable mounting at wiring end protection architecture upper surface of thread bush, the second mounting groove installs the temperature sensor top, the singlechip installs between the sensor top, the sensor top is installed to the second mounting groove.
Preferably, the wiring terminal protection structure comprises a sliding block which is slidably mounted in the sliding groove, a sliding plate is mounted on the upper surface of the sliding block, L-shaped fixing rods are mounted on the left side and the right side of the upper surface of the sliding plate, a protective cover is mounted at one end of each L-shaped fixing rod, and one end of each supporting rod, far away from the threaded sleeve, is movably mounted on the upper surface of the sliding plate.
Preferably, the wiring hole is formed in the right side of the protective cover, and the wiring hole and the protective cover are integrally designed.
Preferably, a sealing gasket is arranged on one side of the protective cover, and the sealing gasket is made of rubber.
Preferably, the waterproof structure is including installing the telescopic link at first mounting groove top, the rack is installed to the telescopic link lower extreme, the waterproof structure still includes movable mounting at the inside gear of first mounting groove, gear and tooth meshing, gear and rack meshing, gear openly one side lower part is installed and is supported the feeler lever, the waterproof structure still includes movable mounting at the inside splash guard of first mounting groove, torsion spring is installed to the splash guard rear side, torsion spring keeps away from the one end of splash guard and installs at first mounting groove rear side, the cooperation is between conflict pole and the splash guard, the spring is installed to splash guard one side, the one end that the splash guard was kept away from to the spring is installed in first mounting groove bottom.
Preferably, the control structure comprises a motor arranged at the rear side of the second mounting groove, a rotary drum is arranged at the output end of the motor, two rotating plates are arranged at the outer side of the rotary drum, a slot is formed in the surface of each rotating plate, the slot and the rotating plates are integrally designed, two rollers are movably arranged at one side of each rotating plate, and the single chip microcomputer is connected with the motor through wires.
The lithium battery with the intelligent charging protection structure has the beneficial effects that: when the lithium battery charging device is used outdoors, the threaded sleeve is driven to move upwards through the rotating threaded column, the connecting rod is driven to move upwards, the gear is driven to rotate, the rack is driven to move downwards, the anti-splash plate at the moment rotates clockwise under the action of the torsion spring, so that the flow guiding effect can be achieved, if the temperature is too high, rainwater can be guided to one side surface of the waterproof plate, the rainwater is prevented from entering the second mounting groove, in the process of moving upwards through the threaded sleeve, the two sliding plates can be driven to move towards the direction close to each other through the supporting rod, the two protective covers at the same side are driven to be closed, the connecting wire is led out from the wiring hole, the protection effect can be achieved on the terminal, the lithium battery is enabled to be more stable and safe in outdoor use, when the lithium battery is charged, the temperature sensor can monitor the temperature of the lithium battery in real time, the singlechip is opened through the control motor, the rotary drum is driven to rotate, the rolling plate is driven to enable the roller to be separated from the second mounting groove through the anti-collision plate, the charging plug is enabled to stop the charging plug, and further the expansion of the lithium battery is prevented, and the safety of the lithium battery is improved.
Drawings
Fig. 1 is a schematic diagram of a front view structure of a lithium battery with an intelligent charging protection structure according to the present invention;
fig. 2 is a schematic diagram of a top view structure of a lithium battery with an intelligent charging protection structure according to the present invention;
fig. 3 is a schematic diagram of a lithium battery protection cover with an intelligent charging protection structure according to the present invention;
fig. 4 is a schematic diagram of the internal structure of a first mounting groove of a lithium battery with an intelligent charging protection structure according to the present invention;
fig. 5 is a schematic diagram of the internal structure of a second installation groove of a lithium battery with an intelligent charging protection structure.
Fig. 6 is a schematic diagram of a structure of a lithium battery a with an intelligent charging protection structure according to the present invention.
In the figure: lithium battery case 1, chute 2, slider 3, sliding plate 4, L-shaped fixing rod 5, protective cover 6, gasket 7, terminal 8, screw column 9, screw sleeve 10, support rod 11, first mounting groove 12, connecting rod 13, tooth 14, telescopic rod 15, rack 16, gear 17, contact rod 18, splash guard 19, spring 20, waterproof plate 21, wire slot 22, second mounting groove 23, charging plug 24, baffle 25, motor 26, drum 27, rotating plate 28, slot 29, roller 30, temperature sensor 31, singlechip 32, torsion spring 33, wiring hole 34.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-6, a lithium battery with intelligent charging protection architecture, including lithium battery case 1, spout 2 has all been seted up to both sides around the upper surface of lithium battery case 1, and spout 2 internally sliding mounting has terminal protection architecture, and terminal protection architecture includes slider 3 of slidable mounting in spout 2 inside, and slider 3 upper surface mounting has slide plate 4, and L type dead lever 5,L type dead lever 5 one end is installed to slide plate 4 upper surface left and right sides, and protection casing 6 has seted up wiring hole 34 on the right side, and wiring hole 34 is integrated with protection casing 6 and designs, can conveniently draw forth the connecting wire.
And the sealing gasket 7 is arranged on one side of the protective cover 6, and the sealing gasket 7 is made of rubber, so that the protective performance of the protective cover 6 is improved.
One end movable mounting that screw thread cover 10 was kept away from to bracing piece 11 is at the sliding plate 4 upper surface, at the in-process of screw thread cover 10 upward movement, can drive two sliding plates 4 through bracing piece 11 and move to the direction that is close to each other to drive two protection casings 6 on the same side and close, wherein connecting wire draws from wiring hole 34, can play the guard effect to terminal 8, thereby makes the lithium cell use more stable and safe outdoors.
The left and right sides of the upper surface of the lithium battery shell 1 are provided with wiring terminals 8, the middle part of the upper surface of the lithium battery shell 1 is movably provided with a threaded column 9, threads on the outer side of the threaded column 9 penetrate through and are provided with a threaded sleeve 10, the front side and the rear side of the threaded sleeve 10 are movably provided with supporting rods 11, one ends of the supporting rods 11, which are far away from the threaded sleeve 10, are movably arranged on the upper surface of a wiring terminal protection structure, the right side of the lithium battery shell 1 is provided with a first mounting groove 12, the right side of the threaded sleeve 10 is provided with a connecting rod 13, the connecting rod 13 penetrates through the lithium battery shell 1 to the inside of the first mounting groove 12, the right side of the connecting rod 13 is provided with a plurality of teeth 14, the inside of the first mounting groove 12 is provided with a waterproof structure, the waterproof structure comprises a telescopic rod 15 arranged at the top of the first mounting groove 12, the lower end of the telescopic rod 15 is provided with racks 16, the waterproof structure further comprises gears 17 movably arranged inside the first mounting groove 12, the gear 17 is meshed with the tooth 14, the gear 17 is meshed with the rack 16, the lower part of one side of the front surface of the gear 17 is provided with a contact resisting rod 18, the waterproof structure further comprises a splash guard 19 movably arranged in the first mounting groove 12, the rear side of the splash guard 19 is provided with a torsion spring 33, one end of the torsion spring 33, which is far away from the splash guard 19, is arranged at the rear side of the first mounting groove 12, the contact resisting rod 18 is matched with the splash guard 19, one side of the splash guard 19 is provided with a spring 20, one end of the spring 20, which is far away from the splash guard 19, is arranged at the bottom of the first mounting groove 12, the thread bush 10 is driven to move upwards by rotating the thread post 9, so as to drive the connecting rod 13 to move upwards, so as to drive the gear 17 to rotate, so as to drive the rack 16 to move downwards, the contact resisting rod 18 is driven to move downwards, the splash guard 19 at the moment rotates clockwise under the action of the torsion spring 33, so that the splash guard 19 can play a diversion effect, if it is rained at this time, rainwater may be guided to one side surface of the waterproof plate 21, thereby preventing entry into the inside of the second installation groove 23.
The lower part of the right side of the lithium battery shell 1 is movably provided with a waterproof board 21, the surface of the waterproof board 21 is provided with a wire slot 22, the lower part of the right side of the lithium battery shell 1 is provided with a second mounting groove 23, the left side of the second mounting groove 23 is provided with a charging plug 24, the outer side of the charging plug 24 is provided with a baffle 25, the top of the second mounting groove 23 is provided with a singlechip 32, the upper part of the left side of the second mounting groove 23 is provided with a temperature sensor 31, the singlechip 32 is connected with the temperature sensor 31 through a wire, the rear side of the second mounting groove 23 is provided with a control structure, the control structure comprises a motor 26 arranged at the rear side of the second mounting groove 23, the output end of the motor 26 is provided with a rotary drum 27, the outer side of the rotary drum 27 is provided with two rotating plates 28, the slot 29 has been seted up on the rotor plate 28 surface, slot 29 is integrated with rotor plate 28 design, rotor plate 28 one side movable mounting has two gyro wheels 30, be connected through the wire between singlechip 32 and the motor 26, when lithium cell charges, temperature sensor 31 can the real-time supervision lithium cell, when the high temperature, singlechip 32 opens through control motor 26, drive rotary drum 27 and rotate, thereby drive rotor plate 28 rotation, make gyro wheel 30 break away from second mounting groove 23 through contradicting baffle 25, the work that stops the charging has been accomplished, and then prevent lithium cell inflation and explode even, lithium cell's security has been improved.
Working principle: when the lithium battery charging plug is used outdoors, the threaded sleeve 10 is driven to move upwards through the rotating threaded column 9, the connecting rod 13 is driven to move upwards, the gear 17 is driven to rotate, the rack 16 is driven to move downwards, the contact rod 18 is driven to move downwards through the rack 16, the splash guard 19 at the moment rotates clockwise under the action of the torsion spring 33, so that a diversion effect can be achieved, if rain can lead rainwater to the surface of one side of the waterproof plate 21, the rainwater can be prevented from entering the inside of the second installation groove 23, in the process of moving the threaded sleeve 10 upwards, the two sliding plates 4 can be driven to move towards the direction close to each other through the supporting rod 11, the two protective covers 6 on the same side are driven to be closed, the connecting wires are led out from the wiring holes 34, the protective effect can be achieved, the lithium battery can be used outdoors more stably and safely, the temperature sensor 31 can monitor the temperature of the lithium battery in real time, when the temperature is overhigh, the temperature sensor 31 is controlled to be opened through the control motor 26, the rotating drum 27 is driven to rotate, the rotating plate 28 is driven to rotate, the rotating plate 30 is stopped, the lithium battery charging plug is prevented from being separated from the second plug, and the lithium battery charging plug is prevented from being further expanded, and the charging plug is prevented from being installed by the second plug, and the lithium battery is prevented from being expanded, and the charging plug is further expanded.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (4)

1. The utility model provides a lithium battery with intelligent protection architecture that charges, includes lithium battery housing (1), its characterized in that, spout (2) have all been seted up to both sides around the upper surface of lithium battery housing (1), spout (2) internally sliding mounting has wiring end protection architecture, wiring end (8) are all installed to lithium battery housing (1) upper surface left and right sides, lithium battery housing (1) upper surface mid-section movable mounting has screw post (9), screw post (9) outside screw thread runs through and installs screw shell (10), both sides all movable mounting have bracing piece (11) around screw shell (10), one end movable mounting that screw shell (10) were kept away from to bracing piece (11) is at wiring end protection architecture upper surface, first mounting groove (12) have been seted up on lithium battery housing (1) right side, connecting rod (13) are installed on screw shell (10) right side, connecting rod (13) movable run through lithium battery housing (1) to first mounting groove (12) inside, a plurality of tooth posts (14) are installed on connecting rod (13) right side, waterproof board (21) are seted up on the surface mounting groove (21), the utility model discloses a lithium battery shell, including lithium cell casing (1), lithium cell casing (1) right side lower part has seted up second mounting groove (23), charging plug (24) are installed in second mounting groove (23) left side, charging plug (24) outside is installed baffle (25), singlechip (32) are installed at second mounting groove (23) top, temperature sensor (31) are installed on second mounting groove (23) left side upper portion, be connected through the wire between singlechip (32) and temperature sensor (31), control structure is installed to second mounting groove (23) rear side, wiring end protection architecture includes slider (3) of slidable mounting in spout (2), slider (3) upper surface mounting has sliding plate (4), L type dead lever (5) are all installed on sliding plate (4) upper surface left and right sides, protection casing (6) are installed to L type dead lever (5) one end, one end movable mounting that screw thread bush (10) were kept away from to bracing piece (11) is at sliding plate (4) upper surface, waterproof structure includes that one installs in first gear (12) and install in first gear (17) and install tooth (17) at the inside one and install tooth (17), gear (17) and rack (16) meshing, gear (17) openly one side lower part is installed and is supported feeler lever (18), waterproof construction still includes movable mounting splash guard (19) inside first mounting groove (12), torsion spring (33) are installed to splash guard (19) rear side, torsion spring (33) are kept away from one end of splash guard (19) and are installed in first mounting groove (12) rear side, cooperate between feeler lever (18) and splash guard (19), spring (20) are installed to splash guard (19) one side, spring (20) are kept away from one end of splash guard (19) and are installed in first mounting groove (12) bottom.
2. The lithium battery with the intelligent charging protection structure according to claim 1, wherein a wiring hole (34) is formed in the right side of the protection cover (6), and the wiring hole (34) and the protection cover (6) are integrally designed.
3. The lithium battery with the intelligent charging protection structure according to claim 2, wherein a sealing gasket (7) is installed on one side of the protective cover (6), and the sealing gasket (7) is made of rubber.
4. The lithium battery with the intelligent charging protection structure according to claim 1, characterized in that the control structure comprises a motor (26) arranged at the rear side of the second mounting groove (23), a rotary drum (27) is arranged at the output end of the motor (26), two rotating plates (28) are arranged at the outer side of the rotary drum (27), slots (29) are formed in the surfaces of the rotating plates (28), the slots (29) and the rotating plates (28) are integrally designed, two rollers (30) are movably arranged at one side of the rotating plates (28), and a single chip microcomputer (32) is connected with the motor (26) through wires.
CN202210702251.9A 2022-06-21 2022-06-21 Lithium battery with intelligent charging protection structure Active CN115000605B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210702251.9A CN115000605B (en) 2022-06-21 2022-06-21 Lithium battery with intelligent charging protection structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210702251.9A CN115000605B (en) 2022-06-21 2022-06-21 Lithium battery with intelligent charging protection structure

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CN115000605A CN115000605A (en) 2022-09-02
CN115000605B true CN115000605B (en) 2023-11-24

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111740061A (en) * 2020-07-06 2020-10-02 深圳中顺新能源科技有限公司 5V lithium battery protection structure
CN213584093U (en) * 2020-11-19 2021-06-29 杭州汉松智能科技有限公司 Overcharge explosion-proof lithium cell
CN213782195U (en) * 2021-01-08 2021-07-23 江西百腾创达科技有限公司 Lithium battery with charging protection structure
CN214227868U (en) * 2020-11-23 2021-09-17 常州市博轩电子有限公司 Lithium battery charger with adjusting device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111740061A (en) * 2020-07-06 2020-10-02 深圳中顺新能源科技有限公司 5V lithium battery protection structure
CN213584093U (en) * 2020-11-19 2021-06-29 杭州汉松智能科技有限公司 Overcharge explosion-proof lithium cell
CN214227868U (en) * 2020-11-23 2021-09-17 常州市博轩电子有限公司 Lithium battery charger with adjusting device
CN213782195U (en) * 2021-01-08 2021-07-23 江西百腾创达科技有限公司 Lithium battery with charging protection structure

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