CN2391207Y

CN2391207Y - Apparatus for detecting accumulator capacitance

Info

Publication number: CN2391207Y
Application number: CN 99214163
Authority: CN
Inventors: 林赞煌
Original assignee: 林赞煌
Current assignee: Guangling Technology Holding Co., Ltd.
Priority date: 1999-06-10
Filing date: 1999-06-10
Publication date: 2000-08-09
Anticipated expiration: 2009-06-10

Abstract

The utility model discloses a device for detecting electric capacity of an accumulator, which is arranged on a proper position of the accumulator. In the utility model, a circuit part comprises a voltage detecting circuit, a current detecting circuit, a switching circuit, an electric capacity display circuit, a time keeping circuit and a drive circuit, wherein, the voltage detecting circuit and the current detecting circuit are simultaneously arranged, the switching circuit is an electronic switch and arranged between the current detecting circuit and the electric capacity display circuit, and the electric capacity display circuit is composed of more than one group of LEDs, which matches with more than one group of resistors; the voltage detecting circuit is additionally provided with a time keeping loop device, which forms the time keeping circuit; the voltage detecting circuit is additionally provided with a drive loop device, which forms the drive circuit. The utility model has the function of detecting the corresponding electric capacity of the accumulator under the condition of a plurality of kinds of loads, and when polarities are erroneously connected or a short circuit or an excessive discharge accident arises, the utility model can accurately isolate the accumulator and the loads.

Description

A kind of detection capacity of the accumulator device

The utility model relates to a kind of detection capacity of the accumulator device, refers to especially a kind ofly detect the function of capacity of the accumulator and when polarity wrong, short circuit or over-discharge can, will cut off the control device of accumulator for the driving action of load voluntarily.

Press, society is more and more progressive now, people's standard of living improves, make that science and technology is at a tremendous pace, weed out the old and bring forth the new, right just now society, traffic convenience be everybody the common target of pursuing, even if but flourishing traffic is arranged, walking is to arrive the destination fast, a kind of vehicles easily still must be arranged, as: bicycle, locomotive, automobile, train, aircraft, ships etc. are especially emphasized the people of individual leisure taste, and the luxury car that has an one even multi-section is very usual, automobile has freedom to the people, comfortable interior assembling is equipped with and spacious reverie space, having a kind of unspeakable fine enjoyment especially when placing oneself in the midst of in the car, similarly is that to place oneself in the midst of the Land of Peach Blossoms the same, and we can seek various car money desirable in the own mind from various newspapers and magaziness or news media.

Only, the non-automobile of tourist communications instrument does not belong to easily at present, no matter be private motor car, station wagon ..., etc., all be sage's product of tourist communications, even when ordering less than restaurant, hotel rest in the tourist season, also can be reluctantly in car, have a rest an evening with conserving strength and store up energy, spend the night in the streets and need not worry suffer from not having the place to go.

There is car no doubt to enjoy, but, modern the easiest criminal's defect is exactly often to forget car light to be turned off and direct cutting the engine or long-time music, cold wind and the lamp of overtaking other vehicles opened under situation about not starting the engine automobile, hereat, easily make the accumulator over-discharge can, cause load to burn or phenomenon such as battery damage and can't normally dispatching a car.In addition, owing to collide or the huge current flow that the automobile line short circuit is caused, cause major accidents such as storage battery burns, automobile burning.Above-mentioned all factors are not have the puzzlement that function caused of automatic outage because of automobile now, for meeting modern's demand, how to conceive and produce renewal, more practical product easily, and be present one big problem.

In view of this, the purpose of this utility model just is to provide a kind of device that detects capacity of the accumulator, when the electric weight deficiency of accumulator or electric current are excessive, can cut off the driving action of accumulator for load voluntarily.

Another purpose of the present utility model is to provide the device of this detection capacity of the accumulator, its simple structure and can detect and show the electric capacity of accumulator under different loads.

For achieving the above object, the utility model detects the capacity of the accumulator device, and its circuit part comprises that a voltage detection circuit, a current-sensing circuit, switch circuit, an electric capacity display circuit, a timing circuit and one drive circuit; Wherein, described current-sensing circuit and described voltage detection circuit install simultaneously, described commutation circuit is an electronic switch, be installed between this current-sensing circuit and this electric capacity display circuit, this electric capacity display circuit cooperates the resistance more than one group to form by the LED more than a group, this timing circuit is for to add a timing loop apparatus at voltage detection circuit, and this driving circuit drives loop apparatus for add one at voltage detection circuit.

Described electric capacity display circuit also can connect hand switch operation control, and whether the electric weight of observation accumulator is sufficient.

This shows, the detection capacity of the accumulator device of the utility model, can detect the effect of battery current amount, can allow the user can understand accumulator easily and under different load current amounts, learn that electric weight is whether sufficient, and when polarity wrong, short circuit or over-discharge can, really accumulator and load are isolated.

Below in conjunction with drawings and the specific embodiments the utility model is further described in more detail.

Fig. 1 is a circuit theory synoptic diagram of the present utility model;

Fig. 2 is a calcspar of the present utility model;

Fig. 3 is a process flow diagram of the present utility model.

At first, please consult Fig. 1, shown in Figure 2, detection capacity of the accumulator device provided by the utility model is switched institutes such as circuit 12, an electric capacity display circuit 13, a timing circuit 14 and one drive circuit 15 and is combined by a voltage detection circuit 10, a current-sensing circuit 11, substantially.Wherein:

This voltage detection circuit 10 utilizes an operational amplifier A 0 output voltage to do energy spectrometer, when being lower than protection voltage, will prevent voltage, and is as described below:

(1) resistance R 5 provides the voltage that does not change Vref1 with voltage stabilizing diode (Zener diode) Z1.

(2) resistance R 6 provides reference voltage Vref 2 with voltage stabilizing diode (Zener diode) Z2.

(3) as V01 during greater than reference voltage Vref 2, the voltage of expression accumulator is greater than protection voltage, this circuit operate as normal (V01 is the voltage that utilizes R01, R02 two electric resistance partial pressures).

(4) as V01 less than the voltage of reference voltage Vref 2 expression accumulators less than protection voltage, then cut off load voluntarily.(V01 is the voltage that utilizes R01, R02 two electric resistance partial pressures).

This current-sensing circuit 11 is provided with simultaneously with this voltage detection circuit 10, accumulator required current signal when detecting and when carrying out deciding Current Control is provided, be to utilize Hall effect (Hall effect) current sensor, to obtain the current signal of battery discharging, because of it has isolation features, so can avoid control circuit to be subjected to the interference of power circuit.Wherein, when being rated for 100 amperes, turn ratio is 1/1000, so work as primary side around a circle coil, when flowing through 1 ampere electric current, secondary side can obtain 0.001 ampere electric current, flow through 100 Ohmages of secondary side output terminal serial connection of this electric current, can produce 0.1 volt voltage, gain factor (the AF=(R4+RF)/R4) that cooperates operational amplifier again, the magnitude of voltage corresponding to the magnitude of current that current sensor can measure then produces the D. C. value VC1 of equivalence in current-sensing circuit 11 operational amplifier A 1, sends the current levels circuit again to and goes hierarchical analysis (as to be divided into 10 amperes, 20 amperes, 50 amperes ...):

1, do not reach 10 ampere-hours when electric current, operational amplifier A 2 outputs "-", operational amplifier A 3 outputs "-";

2, reach 10 amperes and do not reach 20 ampere-hours, operational amplifier A 2 outputs "+", operational amplifier A 3 outputs "-" when electric current;

3, reach 20 ampere-hours when electric current, operational amplifier A 2 outputs "+", operational amplifier A 3 outputs "+";

4, reach 50 ampere-hours when electric current, the driving action control device of accumulator for load then cut off in operational amplifier A 4 outputs "-" voluntarily.

This commutation circuit 12 is an electronic switch (Multi plexers), be installed between this current-sensing circuit 11 and this electric capacity display circuit 13, wherein, comprise non-loaded X0, low load X1 and high capacity X3 and pairing LED7, LED8, LED9, see also shown in the following truth table:

Truth table

Input control				Switch ON
Input control					Forbid (INH)	Select
C	B	A	MC14051B			Select
C	B	A	MC14051B	0		0	0	0	X0
0	0	0	1	0	X1	0	0	0	X0
0	0	0	1	0	X1	0	1	0	X2
0	0	1	1	0	X3	0	1	0	X2

1, do not reach 10 ampere-hours when electric current, A="-", B="-", non-loaded X0="+", this moment, LED7 was with bright lamp;

2, surpass 10 amperes when electric current, do not reach 20 ampere-hours, A="+", B="-", low load X1="+", this moment, LED8 was with bright lamp;

3, surpass 20 amperes when electric current, do not reach 50 ampere-hours, A="+", B="+", high capacity X3="+", this moment, LED9 was with bright lamp;

4, as non-loaded X0, low load X1 and the pairing LED7 of high capacity X3, LED8, LED9, export " ten " and can light, be illustrated in the scope of electric current at that time;

5, surpass 50 amperes when electric current, A4 export "-", represents overburden X4, then cuts off the driving action control device of accumulator for load voluntarily.

This electric capacity display circuit 13 cooperates the resistance more than one group to be constituted by the LED more than a group, when load state not simultaneously, contrast commutation circuit 12, contrast above-mentioned non-loaded X0, low load X1 and three kinds of current situation of high capacity X3, input end V05, V06, V07, V08, V09, the V10 of the dividing potential drop of different impedances corresponding to operational amplifier A 5, A6, A7, A8, A9, A10 arranged respectively.Magnitude of voltage (voltage that promptly refers to V05～V10) after dividing potential drop when accumulator:

1, as V05 during less than reference voltage Vref 2, the then pairing LED1 signal that can flash the redlight with the electric capacity deficiency of caution accumulator, will be prevented storage battery power supply;

2, as V05 during greater than reference voltage Vref 2, LED1 will extinguish, and the electric capacity of expression accumulator is perhaps sufficient, but still needs next LED2 of observation, with the accumulator of confirming this moment whether sufficient electric capacity is arranged;

3, as V06 during greater than reference voltage Vref 2, then pairing LED2 can light steady yellow, and the electric capacity of expression accumulator will be used up;

4, as V06 during less than reference voltage Vref 2, then pairing LED2 is lamp bright signal not, and the expression accumulator need charge;

5, as V07 during greater than reference voltage Vref 2, then pairing LED3 can light green light signals, the electric capacity abundance of expression accumulator;

6, as V07 during less than reference voltage Vref 2, then pairing LED3 is lamp bright signal not, and the electric capacity of expression accumulator may be with deficiency;

7, as above-mentioned the 5th point, as V08, V09 and V10 during greater than reference voltage Vref 2, then pairing LED3, LED4, LED5 and LED6 can light green light signals, then represent the electric capacity abundance (the lamp number that is lighted is many more, and the electric capacity of expression accumulator is sufficient more) of accumulator;

8, as above-mentioned the 6th point, as V08, V09 and V10 during less than reference voltage Vref 2, then pairing LED3, LED4, LED5 and LED6 be lamp bright signal not, represents that then accumulator does not reach corresponding electric capacity;

Hence one can see that, and the electric weight of accumulator can learn whether the electric weight of accumulator is sufficient by the lamp number state that LED1, LED2, LED3, LED4, LED5 and LED6 lighted; This electric capacity display circuit 13 also can be via the operation of hand switch 16, and whether the electric weight of observation accumulator under different loads be sufficient.

This timing circuit 14 is for to add a timing loop C1 at voltage detection circuit 10 ^*The R2 device, wherein, this timing circuit 14 installs simultaneously with above-mentioned voltage detection circuit 10 and current-sensing circuit 11, when a voltage V01 enters (V01 is for utilizing R01, R02 two electric resistance partial pressures),, will connect circuit if when the voltage of accumulator is higher than reference voltage Vref 2, relative, when the voltage of accumulator is lower than reference voltage Vref 2, surpass the time that sets, then cut off the driving action control device of accumulator voluntarily for load.

This driving circuit 15 drives loop apparatus for add one at voltage detection circuit 10, wherein, driving circuit 15 installs simultaneously with above-mentioned voltage detection circuit 10 and current-sensing circuit 11, when the voltage of accumulator is lower than reference voltage Vref 2, surpass timing circuit during 14 times, or current-sensing circuit 11 is when detecting A4 output "-" (expression current anomaly), then cuts off the electric loop of accumulator for the driving action control device of load voluntarily.

The above for being installed in an appropriate location of accumulator, promptly is each circuit arrangement relevant position of the present utility model.

At last,, please cooperate and consult Fig. 3 workflow diagram of the present utility model, have following described by above-mentioned structure:

1, behind device the utility model, this voltage detection circuit 10 can have not unusual by Auto-Sensing voltage:

(1) when voltage detection circuit 10 detects brownout (or abnormal occurrence just can be stopped power supply) will skip to timing circuit 14 automatically, and after surpassing the time that sets, power supply source is continued in the source of just stopping power supply after the involution.

(2) when voltage detection circuit 10 detect voltage all just often, this current-sensing circuit 11 is with driving circuit 15 Auto-Sensing electric currents.

Stop power supply when 2, timing circuit 14 surpasses the time that sets, during reversion, must get back to above-mentioned voltage detection circuit 10 systems.

3, current-sensing circuit 11 can be divided into no-load current X0, low load current X1 and kinds such as high load currents X3 and overburden electric current X4 with current levels:

(1) when electric current is excessive, will test automatically and could continue power supply source, when determining that uncomfortable continuation is powered, will skip to timing circuit 14 automatically, and after surpassing the time that sets, power supply source is continued in the source of just stopping power supply after the involution.

(2) when electric current all just often, this current-sensing circuit 11 will drive electric capacity display circuits 13 by commutation circuit 12.

4, can learn that accumulator has enough electric capacitys really and continues power supply by electric capacity display circuit 13.

The detection capacity of the accumulator device of the utility model is one can detect the effect of battery current amount, can allow the user can understand accumulator easily and under different load current amounts, learn that electric weight is whether sufficient, and when polarity wrong, short circuit or over-discharge can, really accumulator and load are isolated.

Claims

1, a kind of detection capacity of the accumulator device is characterized in that: the circuit part of this device comprises that a voltage detection circuit, a current-sensing circuit, switch circuit, an electric capacity display circuit, a timing circuit and one drive circuit; Wherein, described current-sensing circuit and described voltage detection circuit install simultaneously, described commutation circuit is an electronic switch, be installed between this current-sensing circuit and this electric capacity display circuit, this electric capacity display circuit cooperates the resistance more than one group to form by the LED more than a group, this timing circuit is for to add a timing loop apparatus at voltage detection circuit, and this driving circuit drives loop apparatus for add one at voltage detection circuit.

2, detection capacity of the accumulator device according to claim 1 is characterized in that: described electric capacity display circuit can connect hand switch operation control.