CN2469561Y

CN2469561Y - Granular chargign type lithium battery

Info

Publication number: CN2469561Y
Application number: CN01215655U
Authority: CN
Inventors: 钟道广
Original assignee: KEBIYA PHOTOELECTRICITY TECHONLOGY CO Ltd SHENZHEN CITY
Current assignee: KEBIYA PHOTOELECTRICITY TECHONLOGY CO Ltd SHENZHEN CITY
Priority date: 2001-03-20
Filing date: 2001-03-20
Publication date: 2002-01-02
Anticipated expiration: 2011-03-20

Abstract

A granular charging type lithium battery belongs to an all-purpose charging lithium battery; and is characterized in that the utility model is composed of a lithium ion core, a protective circuit board and an external electrode plate; wherein the protective circuit board is arranged on a circuit board positioning rack at one end of the lithium ion core; the protective circuit is composed of a switch-control circuit and an algorithm circuit; wherein, the switch-control circuit comprises an analog switch integrated circuit 1C2 containing two analog switches. The utility model is used flexibly and conveniently and can be combined freely and used according to the demands of an electrical appliance. The utility model is safe and reliable; and has long service life. Also, the utility model can be applied to all electrical appliances that use the dry battery.

Description

The graininess rechargeable lithium batteries

The utility model relates to a kind of rechargeable lithium battary, particularly a kind of graininess rechargeable lithium batteries that can be general.

Existing charged lithium cells is all made for a certain electrical appliance is special, and these charged lithium cells are because its structural reason, all can only singly only use, can not connect and use and raising voltage, or parallel connection makes the increase capacity that is used for, so it can not resemble and has good universal performance the general dry battery.But common dry cell is short its useful life, causes a large amount of wastes, and discarded dry cell also can cause than serious environmental and pollute.

The purpose of this utility model is to provide a kind of long service life, but and the graininess charged lithium cells of arbitrary combination use.

The purpose of this utility model is achieved in that

A kind of graininess rechargeable lithium batteries is characterized in that it is made up of lithium-ion electric core, protective circuit plate and dispatch from foreign news agency pole plate; Described protective circuit plate is set in place on the circuit board locating rack of an end of lithium-ion electric core.Protective circuit on the described protective circuit plate is made up of control switch circuit and algorithm circuit; Described control switch circuit is made up of an integrated circuit (IC) 2 that contains two analog switches; Described algorithm circuit is an integrated circuit (IC) 1 that includes short-circuit protection, overcurrent protection, mistake high voltage protective and cross low-voltage protection circuit; The positive pole of described lithium-ion electric core is connected on the positive external polar plate of external electrode, and negative pole is connected the discharge input of analog switching ic IC2, and the pin 1 of the analog switching ic IC2 of the output by switch is connected on the negative external polar plate; The

5,6,7,8 of analog switching ic IC2 is connected in parallel; Constitute the signal input end of analog switch by the pin 2,4 of analog switching ic IC2, the pin 4 of algorithm IC circuit 1 was the discrepancy end of current circuit, and be connected by a dropping resistor R3 on the pin 1 of IC2, be used to detect the supply pin 5 that under-voltage and resistance R 2 overvoltage is serially connected in arithmetic integration circuit IC1; The pin 2 of arithmetic integration circuit IC1 is connected on the negative pole of lithium-ion electric core;

The utility model is flexible and convenient to use, and can arbitrarily be used in combination according to the requirement of electrical appliance; Owing to combine protective circuit in the utility model, institute is so that the utility model uses and all safe and reliable when charging, and long service life also can reduce the pollution to environment.The output voltage of single battery of the present utility model is 3.6V, and output current is less than or equal to 2.5A.On the electrical appliance that is applied in the use disposable battery that the utility model can be a large amount of.

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

Accompanying drawing 2 is a STRUCTURE DECOMPOSITION schematic diagram of the present utility model

Accompanying drawing 3 is the circuit diagram of circuit board of the present utility model

Be embodiment of the present utility model with accompanying

drawing

1,2,3 below, the utility model be further detailed:

The contour structures basically identical of the utility model and common dry cell, the positive external polar plate of the positive pole of lithium-ion electric core 1 and battery is at same end, and the negative pole of lithium-ion electric core 1 and cell negative plate are at same end.Circuit board locating rack 2 card can be located at an end or an anodal end of the negative pole of lithium-ion electric core 1 according to the requirement of electrical appliance, is provided with protective circuit plate 3 on circuit board locating rack 2, the negative external polar plate 4 of battery be fixed on protective circuit plate 3 above.5 for connecting lead.Protective circuit on the described protective circuit plate is made up of control switch circuit and algorithm circuit; Described control switch circuit is made up of an integrated IC2 of analog switch that contains two analog switches; Described algorithm IC circuit 1 is the integrated circuit that includes short-circuit protection, overcurrent protection, mistake high voltage protective and cross low-voltage protection circuit.Integrated circuit (IC) 1 can adopt existing electronic integrated circuit chip, as AIC1811.Lithium-ion electric core 1 in the circuit, it is an accumulation of energy electricity core, its positive pole is directly connected to the positive external polar plate 6 of battery, negative pole is not directly connected to the negative external polar plate 4 of battery, but receives the discharge input of analog switching ic IC2, and this end also is the output of charging simultaneously, output by switch, 1 pin of analog switching ic IC2 is connected to cell negative plate, and this end also is simultaneously the input port of charging, and 5,6,7,8 pin of IC2 connect together.This method of attachment need only be wanted opening or closing of control IC 2 just can reach and open and close battery powered purpose.2 pin of IC2 and 4 pin are signal input end of analog switch, and IC2 also is overcurrent and the short-circuit sensor that discharges and recharges simultaneously, because 1 pin of IC2 and 3 pin when having electric current to flow through, can produce the pressure reduction that press the direct ratio rising between 3 pin and 1 pin; 4 pin of arithmetic integration circuit IC1 were inputs of flow algorithm circuit, it is serially connected on 1 pin of IC2 by a dropping resistor R3, regulate the size of R3 and R1, can be used to set the boundary of overcurrent, if the 1 pin voltage of IC2 rises to boundary value, will close the external power supply of battery by 1,3 pin of IC1.For under-voltage and detection overvoltage, be the power supply pin 5 that is connected to IC1 by R2, be input to the builtin voltage comparator of algorithm circuit, 2 pin of IC1 are received the negative pole of lithium-ion electric core.Analog switching ic IC2 can select FDS9926 of the prior art for use.

Claims

1, a kind of graininess rechargeable lithium batteries is characterized in that it is made up of lithium-ion electric core (1), protective circuit plate (3) and dispatch from foreign news agency pole plate (4,6); Described protective circuit plate (3) is set in place on the circuit board locating rack (2) of an end of lithium-ion electric core (1).

2, the graininess rechargeable lithium batteries described in claim 1 is characterized in that the protective circuit on the described protective circuit plate (3) is made up of control switch circuit and algorithm circuit; Described control switch circuit is made up of an integrated circuit (IC) 2 that contains two analog switches; Described algorithm circuit is an integrated circuit (IC) 1 that includes short-circuit protection, overcurrent protection, mistake high voltage protective and cross low-voltage protection circuit; The positive pole of described lithium-ion electric core (1) is connected on the positive external polar plate (6) of external electrode, and negative pole is connected the discharge input of analog switching ic IC2, and the pin 1 of the IC2 of the output by switch is connected on the negative external polar plate (4); The pin 5,6,7,8 of analog switching ic IC2 is connected in parallel; Constitute the signal input end of analog switch by the pin 2,4 of analog switching ic IC2, the pin 4 of algorithm IC circuit 1 was the discrepancy end of current circuit, and be connected by a dropping resistor R3 on the pin 1 of IC2, be used to detect the supply pin 5 that under-voltage and resistance R 2 overvoltage is serially connected in arithmetic integration circuit IC1; The pin 2 of arithmetic integration circuit IC1 is connected on the negative pole of lithium-ion electric core (1);