CN2489487Y

CN2489487Y - Charger with checking and protecting cell function

Info

Publication number: CN2489487Y
Application number: CN 01229506
Authority: CN
Inventors: 吴天德
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-29
Filing date: 2001-06-29
Publication date: 2002-05-01
Anticipated expiration: 2011-06-29

Abstract

The utility model discloses a charger with checking and protecting cell function, including charge lines, control circuits and cells. The control circuits are arranged between the charge circuits and cells. The characteristics of the control circuits and the electrode slices can be used for determining whether the cells are damaged. For the sake that the cells can be automatically cut off to end the charge state, the damaged cell has no risk of explosion caused by continuous electricity charging.

Description

Has the charging device that detects with the protection battery functi on

The utility model relates to a kind of charging device that detects with the protection battery functi on that has, and relates in particular to a kind of characteristic of utilizing electrode slice to form and judges detection and the protective device that battery damages.

Existing nickel-based battery group is all formed battery pack such as 3.0V, 4.5V, 6V with the battery body of a 1.2V～1.3V, and lead-acid battery can be divided into 6V and 12V haply, each lead-acid battery is formed with some electrode slices, as being example with the 12V lead-acid battery, its electrode slice by 6 utmost points, 2.0～2.3V is formed, when wherein a pole piece damages, exist the voltage in this lead-acid battery to have only 10.0V～11.5V.

Nickel-based battery of the type or lead-acid battery are the chargings of finishing secondary cell at charge cycle, though it has monitored charging or detects the battery capacity function, so judge this battery fill full before, charger is not known if an electrode slice fault is arranged, even take for it and do not fill full, thereby it is more than to continue charging, like this, easily the dangerous thing of blasting because of trickle charge.

The purpose of this utility model; be to provide one to have the charging device that detects with the protection battery functi on; it is to be provided with a control circuit in charger; control circuit is connected between charging circuit and the battery; by the characteristic that the electrode slice of this control circuit and battery is formed, judge whether battery damages.

Another purpose of the present utility model is to provide one to have the charging device that detects with the protection battery functi on, whereby, when guaranteeing that battery is damaged, can not cause explosion hazard because of trickle charge.

Be to realize the purpose of this utility model, we propose a kind of charging device that detects with the protection battery functi on that has, and it is to be connected a control circuit between the charging circuit of charger and battery, declare to know and damage battery, and this control circuit comprises:

One charging/charging control circuit not, it is connected with the output of charging circuit, is used to control battery in the charging of charge cycle and do not charge;

One timer is connected between the output and battery of the charging control circuit of charging/not, and the control battery charges and the time that stops filling;

One detects and comparison circuit, respectively with timer, charging/charging control circuit is not connected, it is after battery stops charging, detects the voltage of battery, when the accumulative total secondary judges that cell voltage is lower than the ceiling voltage of few utmost point, then can send caution.

One integrating instrument, it is not respectively with detection and comparison circuit, charging/charging control circuit is connected, and the output of integrating instrument connects a caution unit, and it is the number of times that counting cell charges at charge cycle, and informs by the caution unit: and

For the moment number is selected circuit, is connected in integrating instrument and charging/not between the charging control circuit, and cuts off automatically the charger power supply of battery, complete charge cycle.

Described charging device with detection and protection battery functi on, its described caution unit is luminescence component or siren.

Described have a charging device that detects with the protection battery functi on, the selection circuit of number number when to select circuit be 12/24 hour or other when it is described.

Described charging device with detection and protection battery functi on, its described control circuit is a control chip.

In sum, by the utility model circuit design, have as following many characteristics:

1. utilize the electrode slice of battery to form characteristic, declare and know the damage battery.

2. can guarantee the battery that damages can not cause the danger of blast because of trickle charge.

3. select by 12/24 hour (or At All Other Times), cut off battery automatically, the complete charge process has double protection.

In order to further specify feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet appended icon only for reference with the explanation usefulness, be not to be used for the utility model is limited.

Fig. 1 is a structure chart of the present utility model;

Fig. 2 is a circuit block diagram of the present utility model;

Fig. 3 is a circuit diagram of the present utility model;

Fig. 4 is that the utility model is at operational flow chart;

Fig. 5 is the flow chart of the utility model on detecting.

See also Fig. 1 to Fig. 4; the utility model is a kind of charging device that detects with the protection battery functi on that has; it is to be connected one by comparator U1A to U1D, IC, U2, U4 between the charging circuit 1 of charger and battery 3 ... the control circuit 2 that connects to form Deng assembly; as Fig. 3; by the characteristic that this control circuit 2 and the electrode slice of battery 3 are formed, judge whether damage battery 3.

This control circuit 2 comprises the charging control circuit 21 of a charging/not, a timer 22, detects and comparison circuit 23, an integrating instrument 24, a luminescence component 25, one sirens 26 and selected circuit 27 in one 12/24 hours: wherein:

Charging/the input of charging control circuit 21 is not to be connected with the output of charging circuit 1, and charging/the output of charging control circuit 21 is not to be connected with the input of timer 22, and the output of timer 22 is to be connected with battery 3;

This timer 21 be control battery 3 the charging of charge cycle with stop the time of filling, so that charging/charging control circuit 21 can not charge and stop filling to battery 1 according to setting-up time, in embodiment of the present utility model, be to carry out battery charge 70 minutes at a charge cycle, stop to charge 10 minutes, carry out the recharging cycle so, continuously.

Detection and comparison circuit 23 are with charging/charging control circuit 21, timer 22 and battery 3 are not connected, the output of detection and comparison circuit 23 is to be connected with integrating instrument 24, charge and the number of times that stops filling at charge cycle with accumulative total battery 1, the output of integrating instrument 24 is connected with luminescence component 25 and siren 26 respectively, and integrating instrument 24 with charge/be not connected one 12/24 hours between the charging control circuit 21 and select circuit 27, selecting circuit 27 in this 12/24 hour is to be used as to cut off battery, complete charge process for the second time.

This detection and comparison circuit 23 detect the voltage of battery 1 after battery 1 stops recharging, when judging that battery 1 voltage is lower than the ceiling voltage of a few pole piece, and reached cumulative number, and this luminescence component 25 is promptly glittering; The warning of sounding of 26 of sirens.

As being example with a 12V lead-acid battery, its pole piece by 6 utmost point 2.0V～2.3V is formed, when wherein a pole piece damages, exist the voltage of this lead-acid battery to have only 10.0V～11.5V in it, and at 12 or 24 hours setting-up time one then, then can cut off the charger power supply automatically, when guaranteeing that this battery damages, can be because of trickle charge, and cause the danger of blast.

Seeing also Fig. 5, is to explain with a 12V lead-acid battery.Is it to differentiate the voltage of battery 1 less than 11.5V by detection and comparison circuit on detecting? 41.

If the accumulative total secondary voltage, represents that this battery has been to damage battery (damagebattery) less than 11.5V, at this moment, luminescence component 25 is glittering; Siren 26 was sounded 20 seconds and was cut off AC power, per hour sounded 42 2 seconds.

If voltage is not less than 11.5V, whether then detect cell voltage big by 13.2? 43.

If accumulative total secondary cell voltage is greater than 13.2V, then stop to charge 44, at this moment, judge that battery has filled full (full charge), luminescence component is bright always, because of battery in idle process, this detection and comparison circuit are being worked always, in case when detecting this cell voltage and being lower than 12.4V, begin again charging cycle to the next cycle 45 until the full charging pond; If less than 13.2V, then continue charging 45, until the full charging pond in following one-period.

At this moment, if this battery continues charging and all do not reach the accumulative total secondary, and voltage does not reach 13.2V, then can cut off battery charge 47 automatically through 12 or 24 hours (or At All Other Times) 46, the complete charge process is to guarantee this cell degradation or when damaging, can not cause the danger of blast because of trickle charge.

The above; it only is the specific embodiment of one of the utility model the best; but structural feature of the present utility model is not limited thereto; anyly be familiar with the people of this technology in field of the present utility model; can think easily and variation or modification; assembly as control circuit can be integrated into a single-chip, all can be encompassed in the protection range of following claim of the present utility model.

Claims

1. one kind has the charging device that detects with the protection battery functi on, it is characterized in that, is connected a control circuit between the charging circuit of charger and battery, declares to know and damage battery, and described control circuit comprises:

2. the charging device with detection and protection battery functi on as claimed in claim 1, it is characterized in that: described caution unit is luminescence component or siren.

3. as claimed in claim 1 have a charging device that detects with the protection battery functi on, it is characterized in that: the selection circuit of number number when to select circuit be 12/24 hour or other when described.

4. the charging device with detection and protection battery functi on as claimed in claim 1, it is characterized in that: described control circuit is a control chip.