CN201146226Y

CN201146226Y - Battery charger with function of temperature control protection switch over-loading

Info

Publication number: CN201146226Y
Application number: CNU2008200435041U
Authority: CN
Inventors: 萧晋邦
Original assignee: LIU JIANGXIU
Current assignee: LIU JIANGXIU
Priority date: 2008-01-29
Filing date: 2008-01-29
Publication date: 2008-11-05
Anticipated expiration: 2018-01-29

Abstract

The utility model particularly relates to a battery charger with the switch protection function of overload and temperature control. A battery pack seat of the charger comprises an overload and temperature control switch that is embedded under the position at the battery pack seat where a to-be-charged battery is placed; the thermal sensitive surface clings closely to the to-be-charged battery for thermal sensitivity; a switch-in flake of the overload and temperature control switch is connected with a power input anode of the charging power socket; a come-out flake of the overload and temperature control switch is connected with an anode output contact small plate at the battery pack seat, that is, the overload and temperature control switch is connected in series between the anode output terminal of a PCB circuit board in the battery pack seat and the anode output contact small plate at the battery pack seat; a cathode output of the PCB circuit board is electrically connected with a cathode output flake of the battery pack seat. The battery charger solves the problem that the explosion accident occurs in the process of battery charging, and leads each user to master whether the battery pack used has calorific accident, thus preventing the problem battery pack from being used.

Description

Battery charger with switch overload temperature control defencive function

Technical field:

The utility model relates to the charger technical field, refers in particular to a kind of battery charger with switch overload temperature control defencive function.

Technical background:

Along with development of science and technology, the palm electric equipment products presents variation, carries electric equipment products as mobile phone, camera, computer, game machine or the like palm.Above product all will use rechargable battery, because rechargable battery quality, diversified in specifications, most of products use the additional standby rechargable battery, and these rechargable batteries often are non-original factory product (even former factory product also can be defective in quality), and during in fact mobile phone uses battery cross thermal explosion, computer use in the battery phenomenon of crossing thermal explosion happen occasionally.Thereby use overheated and charging safety product research and development that can detect strick precaution in advance come into one's own at rechargable battery.What this type of charging device was representative at present has two kinds; first kind of fuse of adorning overcurrent fusing in the transformer frequency response input; cause short circuit when being recharged the pond damage; after making the current rush overload; the fusing of fusing protective tube; circuit disconnects; when needs continue to use; must keep in repair or change protective tube or transformer; the shortcoming of this kind current protective device is that rechargable battery has problem; must burn the fuse melting pipe in the charging transformer, just block power supply, but bad rechargable battery can't be detected immediately.Second kind; temperature detect switch (TDS) is installed in transformer; though it is more progressive to some extent in the protection than the fusing protective tube is installed; protected useful life of this part of transformer, problem is the rechargable battery self-heating, and superheating phenomenon can not be found when unusual and action; because above-mentioned two kinds of devices are not all monitored the rechargable battery heating; be that pond to be charged is damaged, cause super-high-current, protective tube will fuse and the thermostat open circuit is just protected transformer and super-high-current generation high temperature just will fuse.And the automatic temperature control switch of dress is when temperature decline in the transformer, and circuit power is switched on again.Bad rechargable battery is recharged again again.So far unsafe condition will be than for the first time serious.The unusual unfavorable condition of rechargable battery under such charging device even do not realized after the charging, is used the rechargable battery of not checking the heating situation to use and is had hidden danger all the time.

Summary of the invention:

The purpose of this utility model is not have at existing rechargable battery charging process the defective of the protective device of temperature anomaly; providing a kind of not only can supply with by auto power off when current overload; simultaneously again can be when the normal and rechargable battery quality of electric current be bad; battery produces self temperature adstante febre; also can supply with by deenergization, allow the user know the battery charger with switch overload temperature control defencive function of rechargable battery abnormal heating.

For achieving the above object; the technical scheme that the utility model provides is: include the charging stall; transformer; connect the charging input plug; have charging indicator light on the charging stall; have the charge power supply socket on the charging stall; also comprise an overload temperature control protection switch on the charging stall; described overload temperature control protection switch assembly is put under the position in the pond to be charged of charging stall; temperature-sensitive is close in temperature-sensitive face and pond to be charged; the access sheet of overload temperature control protection switch connects the power supply input positive pole of charge power supply socket; the positive pole that picks out on the sheet connection charging stall of overload temperature control protection switch is exported contact chip; the temperature control protection switch that promptly transships is connected between the cathode output end of the PCB wiring board in the charging stall and the positive pole output contact chip on the charging stall, and the negative pole output of PCB wiring board electrically connects with the negative pole output chip of charging stall.

Be provided with a thermometal sheet in the described overload temperature control protection switch; one end of this thermometal sheet is fixed on picking out on the sheet of power supply; the other end is provided with a lower contact; be mounted with a upper contact on the described access sheet; lower contact on the thermometal sheet contacts conducting with upper contact on inserting sheet; the lower contact back side of thermometal sheet is provided with a push rod, and an end of push rod is enclosed within on the switch key.

The utility model is to load onto an overload temperature control protection switch in the charger seat; this overload temperature control protection switch not only has the overcurrent protection effect; can be when current overload the automatic disconnection state; can also work as the rechargable battery quality problem; when unusual the intensification taken place; by sensible heat sheet metal enclosing cover; thermometal sheet expanded by heating; outwardly-bent; cause; lower contact is thrown off open circuit; be that power circuit disconnects; after having only the user to check out rechargable battery; by the moving switch key of hand over hand; could continue charging; avoided the undesired heating situation of rechargable battery to go down always; cause the accident of blast; because rechargable battery is when accepting charging; voltage; electric current is all greater than rechargable battery voltage and current in use; so in charging, not overheated, normally accept charging; that is the blast with regard to not worrying to take place because of overheated in use; solve the accident that present rechargable battery is in use blasted, also can allow each user can both grasp the rechargable battery that oneself the uses accident of to generate heat, the problem rechargable battery has not been brought use.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model

Accompanying drawing 2 is the whole front appearance structural representation of the utility model

Accompanying drawing 3 is the whole back appearance structural representation of the utility model

Embodiment:

See shown in the accompanying drawing 1,2,3,4; present embodiment includes battery tray 1; transformer 2; connect charging input plug 3, on the charging stall 1 charging indicator light 4 is arranged, have charge power supply socket 5 on the charging stall 1; also comprise an overload temperature control protection switch 6 on the rechargable battery 1; described overload temperature control protection switch 6 assemblies are in the position in the placement pond to be charged of charging stall 1, and temperature-sensitive is close in temperature-sensitive face and pond to be charged, and these overload temperature control protection switch 6 temperature-sensitive face back sides are provided with reset switch 15.

Cathode output end behind the cathode power supply input PCB wiring board 19 of the access pin connection charge power supply socket 5 of overload temperature control protection switch 6; the pin that picks out of overload temperature control protection switch 6 is electrically connected on the positive pole output contact chip 7 on the charger seat 1, and the cathode output end behind the negative power supply input PCB wiring board 19 of charge power supply socket 5 electrically is connected directly on the negative pole output contact chip 8 on the charging stall 1.

Be provided with a thermometal sheet 9 in the overload temperature control protection switch 6; one end of this thermometal sheet is fixed on power supply and picks out on the sheet 10; the other end is mounted with a lower contact 11; the inner that power supply inserts sheet 12 is mounted with a upper contact 13; lower contact 11 on the thermometal sheet 9 cooperates with the upper contact 13 that power supply inserts on the sheet 12, makes overcurrent protection switch 6 conductings.

The back side of the lower contact 11 of thermometal sheet 9 is connected with hand switch button 15 by a push rod 14; when pressing hand switch 15; by push rod 14; depress the lower contact 11 that thermometal sheet 9 is provided with; lower contact 11 on the thermometal sheet 9 is contacted with the upper contact 13 that power supply inserts on the sheet 12, can be by manually reseting the protection switch conducting.

When charger normally uses; lower contact 11 on the thermometal sheet 9 and power supply insert upper contact 13 contact matching in the sheet 12; overcurrent protection switch 6 place's normally states; when current overload; thermometal sheet 9 heatings of overcurrent protection switch 6, the 9 downward perks of thermometal sheet are with push rod 14 and continuous manual reset switch 15 jack-up; lower contact 11 on the thermometal sheet 9 disconnects with the upper contact 13 that power supply inserts on the sheet 12, overcurrent protection switch 6 is disconnected and the maintenance off-state.After checking that charger and battery are normal, press manual reset switch 15, make the overcurrent protection switch conducting, charger just can continue charging.

When charger normally uses; when the rechargable battery that uses because of quality problems; in charging process, produce high temperature; the temperature-sensitive face 16 that is installed in the overcurrent protection switch 6 of charger seat is recharged battery because of being close to; porcelain knob 17 and upper contact 13 that temperature is reached in the overcurrent protection switch 6 reach lower contact 11 again, make thermometal sheet 9 temperature influences, perk downwards; with push rod 14 and continuous manual reset switch 15 jack-up, the lower contact 11 of thermometal sheet 9 disconnects with the upper contact 13 that power supply inserts on the sheet 12.Overcurrent protection switch 6 is disconnected and the maintenance off-state; after checking that charger and battery are normal; press manual reset switch 15; make the overcurrent protection switch conducting; charger just can continue to use; detect the battery of finding that high temperature cuts off charging automatically to the switch overload through this, can determine to be placed on the problem battery that mobile phone uses.

The embodiment of the above is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model with this, so the equivalence that all shapes according to the utility model, structure and principle are done changes, all should be covered by in the protection range of the present utility model.

Claims

1; battery charger with switch overload temperature control defencive function; include charging stall (1); transformer (2); connect charging input plug (3); have charging indicator light (4) on the charging stall (1); have charge power supply socket (5) on the charging stall (1); it is characterized in that: also comprise an overload temperature control protection switch (6) on the charging stall (1); described overload temperature control protection switch (6) assembly is put under the position in the pond to be charged of charging stall (1); temperature-sensitive face (16) is close to temperature-sensitive with pond to be charged; this overload temperature control protection switch (6) temperature-sensitive face back side is provided with reset switch (15); the access sheet (12) of overload temperature control protection switch (6) connects the power supply input positive pole of charge power supply socket (5); the positive pole that picks out on sheet (10) the connection charging stall (1) of overload temperature control protection switch (6) is exported contact chip (7); the temperature control protection switch (6) that promptly transships is connected between the cathode output end and the positive pole output contact chip (7) on the charging stall (1) of the PCB wiring board (19) in the charging stall (1), and the negative pole output of PCB wiring board (19) electrically connects with the negative pole output chip (8) of charging stall (1).

2; according to the battery charger with switch overload temperature control defencive function according to claim 1; it is characterized in that: be provided with a thermometal sheet (9) in the described overload temperature control protection switch (6); one end of this thermometal sheet (9) is fixed on power supply and picks out on the sheet (10); the other end is provided with a lower contact (11); described power supply inserts on the sheet (12) and is mounted with a upper contact (13); lower contact (11) on the thermometal sheet (9) contacts conducting with the upper contact (13) that power supply inserts on the sheet (12); lower contact (11) back side of thermometal sheet (9) is provided with a push rod (14), and an end of push rod (14) is enclosed within on the switch key (15).