CN112670678A

CN112670678A - Lithium battery charger with automatic locking overload power-off function

Info

Publication number: CN112670678A
Application number: CN202011560703.1A
Authority: CN
Inventors: 林臣怀
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-04-16

Abstract

The invention relates to the technical field of lithium battery chargers, and discloses a lithium battery charger capable of automatically locking an overload power-off function. This lithium battery treasured that charges of automatic closure overload outage, through the positive plate, the negative plate, dielectric plate's mutually supporting in piezo-resistor and the carriage release lever, when the connector inserts inside the spread groove completely, control electro-magnet two circular telegrams produce magnetic field, drive in the recess that the card key got into the connector outside, thereby the position of locking connector, guaranteed the connector can not be because of the external force disturbance disconnection that receives in the design range at the in-process that the circular telegram was used, product performance has been promoted, the damage that the lithium cell received because of the outage suddenly has been prevented.

Description

Lithium battery charger with automatic locking overload power-off function

Technical Field

The invention relates to the technical field of lithium battery chargers, in particular to a lithium battery charger capable of automatically locking overload power failure.

Background

The treasured self that charges's charging plug directly can charge and self has the electricity storage device to mobile device through alternating current power supply, can provide stand-by power supply for digital product when not having direct current power supply or going out, however in the precious use that charges, it is not hard up often to appear connecting the position, and lead to charging unstability, or the condition of direct disconnection, not only be unfavorable for user's use, still can cause the damage for the electrical part of connecting simultaneously, caused the unnecessary loss for the user.

In precious use that charges, the removal is precious and the condition of connecting the electrical apparatus often can appear, often can lead to connecting the position to receive drawing of external force, thereby lead to the connector and the precious condition of separation even that appears loosening between charging, make to charge and stop or contact failure, be unfavorable for user's use, the precious in-process that uses that charges simultaneously can appear the overload condition, if untimely stop work, can lead to the precious overheat that charges, damage lithium cell and connecting electrical apparatus, make the user place in danger simultaneously.

Therefore, we propose a lithium battery charger with automatic locking overload power-off to solve the above problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a lithium battery charger capable of automatically locking overload power-off, which has the advantages of automatically locking a connecting part, protecting a lithium battery by automatically popping a connector to cut off a circuit when overload occurs, and solves the problems that the common charger is not firmly connected, and the charger is overheated and damages the lithium battery because the common charger continues to work when overload occurs.

(II) technical scheme

In order to realize the purpose that the connecting part is automatically locked, the connector is automatically popped to cut off a circuit when overload is used, and a lithium battery is protected, the invention provides the following technical scheme: a lithium battery charger capable of automatically locking overload power failure comprises a shell, wherein a connecting groove is formed in the top of the shell, elastic grooves are formed in two sides of the shell, a fixing rod is fixedly connected to the top of each elastic groove, a first spring is fixedly connected to the top of each elastic groove, a moving rod is movably connected to the outer side of each fixing rod, a positive plate is fixedly connected to two sides of the shell, a negative plate is fixedly connected to two sides of the shell, piezoresistors are fixedly connected to two sides of the shell, two symmetrical first electromagnets are fixedly connected to the bottom of the shell, two symmetrical starting grooves are formed in the bottom of the shell, a second spring is fixedly connected to the top of each starting groove, a starting block is fixedly connected to the bottom of the second spring, a first permanent magnet is fixedly connected to the inner part of each starting block, a second electromagnet is fixedly connected to two sides, the inside fixedly connected with permanent magnet two of card key, the inside joint of spread groove has the connecting head.

Preferably, the casing is insulating plastic material, and the cavity is placed to the inside lithium cell that is provided with of casing, and the installation of the lithium cell of being convenient for has prevented the product electric leakage, has increased the security of product.

Preferably, the dead lever is metal material, and the diameter of dead lever equals the through-hole diameter of carriage release lever, and the surface of dead lever is smooth, the installation of the dead lever of being convenient for and carriage release lever for the carriage release lever can remove along the dead lever, thereby makes carriage release lever extrusion spring one increase elastic potential energy, pops out the connector when realizing the product and transshipping, and open circuit protects the product and does not receive the damage, prolongs the life of product.

Preferably, the through-hole has been seted up to the inside of carriage release lever, and the diameter of carriage release lever is less than the diameter of bullet groove, and the surface of carriage release lever is provided with the recess, and the inboard of carriage release lever is provided with dielectric plate, through the removal of carriage release lever for dielectric plate inserts to between the negative plate, changes the relative area of positive plate and negative plate, makes piezo-resistor circular telegram work, and control electro-magnet two-way electricity produces magnetic field, thereby the locking connector prevents that the connector from being extracted because of external force at the in-process that uses, thereby damage product and electrical part.

Preferably, the opposite surfaces of the first electromagnet and the first permanent magnet are opposite in magnetism, when the first electromagnet is electrified, the first electromagnet generates a magnetic field, the first electromagnet and the first permanent magnet attract each other due to the opposite in magnetism, the starting block is driven to overcome the elastic force of the second spring to move upwards, the locking of the moving rod is released, the moving rod is enabled to eject out the connector under the elastic force of the first spring, and the function of cutting off a circuit is achieved.

Preferably, the starting block comprises a movable block body and a clamping block body, the diameter of the movable block body is smaller than that of the starting groove, friction force between the starting block and the starting groove is reduced, and the starting block can move in the starting groove conveniently.

Preferably, the opposite surfaces of the second electromagnet and the second permanent magnet are the same in magnetism, when the second electromagnet is electrified, the second electromagnet generates a magnetic field, the second electromagnet and the second permanent magnet repel each other due to the same opposite surface magnetism, the clamping key is driven to move outwards to enter the groove in the outer side of the connector, the connector is locked, and the function that the connector cannot be pulled out due to external force in a design range when the connector is used is achieved.

Preferably, the card key is including removing block and joint block, and the diameter that removes the block is less than the diameter of draw-in groove, has reduced the frictional force between card key and draw-in groove, the removal of the card key of being convenient for in the draw-in groove.

Preferably, the degree of depth that highly is greater than the spread groove of connector, the recess of two symmetries has been seted up in the outside of connector for the card key when two circular telegrams of electro-magnet pop out, with the card key joint together, the removal of restriction connector strengthens being connected of connector and casing, prevents the connector because of receiving the emergence of the condition of being extracted of the external force of design within range when using.

(III) advantageous effects

Compared with the prior art, the invention provides a lithium battery charger capable of automatically locking overload power-off, which has the following beneficial effects:

1. this lithium battery that automatic closure overload outage charges treasured, through the positive plate, the negative plate, mutually support of dielectric plate in piezo-resistor and the carriage release lever, insert to the spread groove when inside at the connector, control electro-magnet two-way electricity produces magnetic field, drive in the recess that the card key got into the connector outside, thereby the position of locking connector, guaranteed the connector can not be because of the external force disturbance disconnection that receives the design range at the in-process that the circular telegram was used, product performance has been promoted, the damage that the lithium cell received because of sudden power failure has been prevented.

2. This lithium battery treasured that charges of automatic closure overload outage, mutually support through electro-magnet one and permanent magnet one, make the magnetic field reinforcing that electro-magnet one produced when the product transships, thereby make the elasticity upward movement of starting block overcoming spring two, remove the locking effect to the carriage release lever, the carriage release lever outwards pops out under the effect of spring one, drive connector upward movement, thereby make connector and casing separation cut-off circuit, the function of product stop work when transshipping has been realized, the security of user's use has been guaranteed, lithium cell and electrical part have been avoided receiving the damage because of overloading, the service life of product has been prolonged.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the travel bar of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 1 according to the present invention;

FIG. 4 is a partially enlarged view of portion B of FIG. 1 according to the present invention.

In the figure: 1. a housing; 2. connecting grooves; 3. a spring slot; 4. fixing the rod; 5. a first spring; 6. a travel bar; 7. a positive plate; 8. a negative plate; 9. a voltage dependent resistor; 10. an electromagnet I; 11. starting a groove; 12. a second spring; 13. a start block; 14. a first permanent magnet; 15. an electromagnet II; 16. a card slot; 17. a third spring; 18. a card key; 19. a permanent magnet II; 20. a connecting head.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a lithium battery charger with automatic locking overload power-off function comprises a housing 1, wherein the housing 1 is made of an insulating plastic material, a lithium battery accommodating cavity is arranged inside the housing 1, the lithium battery is convenient to install, product leakage is prevented, and product safety is improved, a connecting groove 2 is formed in the top of the housing 1, elastic grooves 3 are formed in two sides of the housing 1, fixing rods 4 are fixedly connected to the tops of the elastic grooves 3, the fixing rods 4 are made of a metal material, the diameter of each fixing rod 4 is equal to the diameter of a through hole of a movable rod 6, the surfaces of the fixing rods 4 are smooth, the fixing rods 4 and the movable rod 6 are convenient to install, the movable rod 6 can move along the fixing rods 4, the movable rod 6 extrudes a spring 5 to increase elastic potential energy, a connector 20 is ejected when a product is overloaded, a circuit is disconnected, the product is, 3 top fixedly connected with springs of elastic groove 5, 4 outside swing joint of dead lever have carriage release lever 6, the through-hole has been seted up to the inside of carriage release lever 6, the diameter of carriage release lever 6 is less than the diameter of elastic groove 3, the surface of carriage release lever 6 is provided with the recess, the inboard of carriage release lever 6 is provided with dielectric plate, removal through carriage release lever 6, make dielectric plate insert as to between negative plate 8, change the relative area of positive plate 7 and negative plate 8, make piezo-resistor 9 circular telegram work, control two 15 circular telegrams of electro-magnet produce magnetic field, thereby locking connector 20, prevent that connector 20 from being extracted because of external force in the in-process that uses, thereby damage product and electrical apparatus.

The two sides of the shell 1 are fixedly connected with positive plates 7, the two sides of the shell 1 are fixedly connected with negative plates 8, the two sides of the shell 1 are fixedly connected with piezoresistors 9, the bottom of the shell 1 is fixedly connected with two symmetrical electromagnets 10, the opposite surfaces of the electromagnets 10 and the permanent magnets 14 are opposite in magnetism, when the electromagnets 10 are electrified, the electromagnets 10 generate magnetic fields, the electromagnets 10 and the permanent magnets 14 attract each other due to the opposite surfaces in magnetism, the starting block 13 is driven to move upwards to overcome the elasticity of the spring II 12, the locking of the moving rod 6 is released, the moving rod 6 is driven to eject out the connector 20 under the elasticity of the spring I5, the function of cutting off a circuit is realized, the bottom of the shell 1 is provided with two symmetrical starting grooves 11, the top of the starting groove 11 is fixedly connected with the spring II 12, the bottom of the spring II 12 is fixedly connected with a starting block 13, the starting block 13 comprises a, the diameter of the movable block body is smaller than that of the starting groove 11, the friction force between the starting block 13 and the starting groove 11 is reduced, the starting block 13 can move in the starting groove 11 conveniently, the permanent magnet I14 is fixedly connected inside the starting block 13, the two electromagnets 15 are fixedly connected to the two sides of the shell 1, the opposite faces of the two electromagnets 15 and the two permanent magnets 19 are same in magnetism, when the two electromagnets 15 are powered on, the two electromagnets 15 generate a magnetic field, the two electromagnets 15 and the two permanent magnets 19 are mutually exclusive due to the same opposite faces in magnetism, the clamping key 18 is driven to move outwards to enter the groove in the outer side of the connector 20, the connector 20 is locked, and the function that the connector 20 cannot be pulled out due to external force in a design range during use is achieved.

The two sides of the shell 1 are both provided with a clamping groove 16, the inner side of the clamping groove 16 is fixedly connected with a spring III 17, the outer side of the spring III 17 is fixedly connected with a clamping key 18, the clamping key 18 comprises a moving block body and a clamping block body, the diameter of the moving block body is smaller than that of the clamping groove 16, the friction force between the clamping key 18 and the clamping groove 16 is reduced, the clamping key 18 can move in the clamping groove 16 conveniently, a permanent magnet II 19 is fixedly connected inside the clamping key 18, a connector 20 is clamped inside the connecting groove 2, the height of the connector 20 is larger than the depth of the connecting groove 2, two symmetrical grooves are formed on the outer side of the connector 20, so that when the electromagnet II 15 is electrified, the locking key 18 is locked together to limit the movement of the connector 20, enhance the connection between the connector 20 and the housing 1, and prevent the connector 20 from being pulled out due to external force within the design range during use.

The working principle is as follows: when the product normally works, the connector 20 is completely inserted into the connecting groove 2, the movable rod 6 overcomes the elastic force of the first spring 5 to move inwards, the starting block 13 moves downwards under the action of the second spring 12 and is clamped in the groove on the surface of the movable rod 6, meanwhile, the dielectric plate on the movable rod 6 is inserted between the positive plate 7 and the negative plate 8 in the moving process, the contact area between the positive plate 7 and the negative plate 8 is changed, so that the voltage at the two ends of the piezoresistor 9 is changed, the piezoresistor 9 is electrified to work, the circuit of the second electromagnet 15 is controlled to be switched on, the second electromagnet 15 generates a magnetic field and repels the second permanent magnet 19 to drive the clamp key 18 to move outwards, the second electromagnet is clamped in the groove on the outer side of the connector 20, the connector 20 is stably connected with the shell 1, and the situation that the connector 20 is pulled out due to external force disturbance within the design range is prevented, stability when having promoted the use, be favorable to prolonging the life of product, when product internal circuit transships, electro-magnet 10 makes the magnetic field intensity reinforcing that produces because of the electric current grow, electro-magnet 10 and permanent magnet 14 interact, drive the elasticity rebound that the start block 13 overcome spring two 12, remove the locking to movable rod 6, movable rod 6 outwards pops out under the effect of spring 5, drive connector 20 rebound, press card key 18 simultaneously and can to the draw-in groove 16 in, remove the locking to connector 20, make connector 20 and casing 1 separation, the function of disconnection circuit when realizing overloading, avoided the product to damage because of overloading, the product life has been prolonged, user's safety in utilization has been guaranteed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automatic lithium battery treasured that charges of shutting overload outage, includes casing (1), its characterized in that: the improved energy-saving starting device is characterized in that a connecting groove (2) is formed in the top of the shell (1), elastic grooves (3) are formed in the two sides of the shell (1), fixing rods (4) are fixedly connected to the tops of the elastic grooves (3), springs (5) are fixedly connected to the tops of the elastic grooves (3), moving rods (6) are movably connected to the outer sides of the fixing rods (4), positive plates (7) are fixedly connected to the two sides of the shell (1), negative plates (8) are fixedly connected to the two sides of the shell (1), piezoresistors (9) are fixedly connected to the two sides of the shell (1), two symmetrical electromagnets I (10) are fixedly connected to the bottom of the shell (1), two symmetrical starting grooves (11) are formed in the bottom of the shell (1), springs II (12) are fixedly connected to the tops of the starting grooves (11), starting blocks (13) are fixedly connected to, the two sides of the shell (1) are fixedly connected with the second electromagnets (15), the two sides of the shell (1) are provided with the clamping grooves (16), the third springs (17) are fixedly connected to the inner sides of the clamping grooves (16), the clamping keys (18) are fixedly connected to the outer sides of the third springs (17), the second permanent magnets (19) are fixedly connected to the inner portions of the clamping keys (18), and the connecting heads (20) are clamped inside the connecting grooves (2).

2. The lithium battery charger with automatic locking and overload power failure of claim 1 is characterized in that: the shell (1) is made of insulating plastic materials, and a lithium battery placing cavity is arranged inside the shell (1).

3. The lithium battery charger with automatic locking and overload power failure of claim 1 is characterized in that: the fixing rod (4) is made of metal materials, the diameter of the fixing rod (4) is equal to that of the through hole of the moving rod (6), and the surface of the fixing rod (4) is smooth.

4. The lithium battery charger with automatic locking and overload power failure of claim 1 is characterized in that: a through hole is formed in the moving rod (6), the diameter of the moving rod (6) is smaller than that of the elastic groove (3), a groove is formed in the surface of the moving rod (6), and a dielectric plate is arranged on the inner side of the moving rod (6).

5. The lithium battery charger with automatic locking and overload power failure of claim 1 is characterized in that: the opposite surfaces of the electromagnet I (10) and the permanent magnet I (14) are opposite in magnetism.

6. The lithium battery charger with automatic locking and overload power failure of claim 1 is characterized in that: the starting block (13) comprises a moving block body and a clamping block body, and the diameter of the moving block body is smaller than that of the starting groove (11).

7. The lithium battery charger with automatic locking and overload power failure of claim 1 is characterized in that: and the opposite surfaces of the second electromagnet (15) and the second permanent magnet (19) have the same magnetism.

8. The lithium battery charger with automatic locking and overload power failure of claim 1 is characterized in that: the clamping key (18) comprises a moving block body and a clamping block body, and the diameter of the moving block body is smaller than that of the clamping groove (16).

9. The lithium battery charger with automatic locking and overload power failure of claim 1 is characterized in that: the height of connector (20) is greater than the degree of depth of spread groove (2), and two symmetrical recesses have been seted up in the outside of connector (20).