CN104062593A - Battery power detection system - Google Patents
Battery power detection system Download PDFInfo
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- CN104062593A CN104062593A CN201310723424.6A CN201310723424A CN104062593A CN 104062593 A CN104062593 A CN 104062593A CN 201310723424 A CN201310723424 A CN 201310723424A CN 104062593 A CN104062593 A CN 104062593A
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- accumulator
- chip microcomputer
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- electric quantity
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a battery power detection system, comprising an accumulator, for powering the system; a single chip microcomputer, which is ATmega64L connected to the accumulator; a load circuit, including a system and external power circuit connected to the single chip microcomputer and the accumulator; an electric quantity monitoring module, which is a BQ2013H chip connected to the single chip microcomputer and the accumulator; an LED display module, which includes a control chip and is connected to the single chip microcomputer and the accumulator for displaying the state of charge. The battery power detection system has the advantages that: the structure is simple, usage is convenient, online detection of battery power is effectively achieved, and meanwhile, accurate measurement of the battery power is achieved through the BQ2013H chip and measured value is displayed by the LED display lamp, thus achieving efficient control of the battery power.
Description
Technical field
the present invention relates to field of medical, particularly a kind of battery electric quantity detection system for Medical Devices.
Background technology
accumulator, as long period power supply, is widely used in the fields such as traffic, communication, control system.For ensureing the stability of using electricity system, be a very important job to the monitoring of accumulator dump energy, conventional detection method has: densimetry, open-circuit voltage method, electric discharge and internal resistance method.The shortcoming of these 4 kinds of methods is that measuring accuracy is low, is not suitable for on-line measurement, and complex circuit designs or algorithm are loaded down with trivial details.Therefore, how to provide a kind of battery electric quantity detection system of on-line measurement, become the major issue that field of medical need to solve.
Summary of the invention
the problem that is not suitable for on-line measurement in order to solve existing electromagnetism detection method of quantity of electricity, the present invention proposes following technical scheme:
a kind of battery electric quantity detection system, this detection system comprises:
accumulator: described accumulator is for system power supply;
single-chip microcomputer: described single-chip microcomputer is ATmega64L, is connected in described accumulator;
load circuit: comprise system self and external power circuit, be connected in described single-chip microcomputer and accumulator;
electric quantity monitoring module: described electric weight detection module is chip BQ2013H, is connected in described single-chip microcomputer and accumulator;
lED display module: comprise control chip, this module is connected in described single-chip microcomputer and accumulator, for showing dump energy, control chip makes the measured value on ATmega64L control LED demonstration output by ATmega16 by RS232 communication.
as a preferred embodiment of the present invention, between the negative pole of described accumulator and the ground of wiring board, be serially connected with detection resistance, described detection resistance is the resistance of 0.005 Ω/3 W.
as another kind of preferred version of the present invention, the capacity of described accumulator is 12V/12Ah.
as another preferred version of the present invention, the control chip of described LED display module is ATmega16A.
as another preferred version of the present invention, described accumulator is provided with the voltage-regulating system of field effect transistor composition.
as another preferred version of the present invention, between described single-chip microcomputer and described LED display module control chip, carry out communication by RS232.
the beneficial effect that the present invention brings is: the present invention is simple in structure, easy to use, effectively realize the online detection of battery electric quantity, realized the accurate measurement of battery electric quantity by chip BQ2013H simultaneously, show by LED display lamp simultaneously, realized the efficient control to battery electric quantity.
Brief description of the drawings
accompanying drawing 1 is single-chip microcomputer schematic diagram of the present invention;
accompanying drawing 2 is control chip schematic diagram of the present invention;
accompanying drawing 3 is chip BQ2013 testing circuit of the present invention.
Embodiment
below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
as shown in single-chip microcomputer schematic diagram as of the present invention in accompanying drawing 1, accompanying drawing 2 control chip schematic diagram of the present invention and accompanying drawing 3 chip BQ2013 of the present invention testing circuit figure, a kind of battery electric quantity detection system, this detection system comprises:
accumulator: described accumulator is for system power supply;
single-chip microcomputer: described single-chip microcomputer is ATmega64L, is connected in described accumulator;
load circuit: comprise system self and external power circuit, be connected in described single-chip microcomputer and accumulator;
electric quantity monitoring module: described electric weight detection module is chip BQ2013H, is connected in described single-chip microcomputer and accumulator;
lED display module: comprise control chip, this module is connected in described single-chip microcomputer and accumulator, for showing dump energy, control chip makes the measured value on ATmega64L control LED demonstration output by ATmega16 by RS232 communication.
bQ2013H can accurately measure the dump energy of rechargeable battery, and the battery that can monitor comprises NI-G, ni-mh and lead-acid accumulator.Chip directly drives the LED lamp showing for capacity, can apply internal temperature sensor and automatically carry out charging and discharging compensation, and simple unibus serial communication interface is provided.
bQ2013H chip can keep accurate record to the available power of battery.Between the negative pole of battery and the ground of wiring board, be connected in series one and detect resistance, the voltage drop that chip detects resistance by monitoring judges that battery is in charging or discharge condition.BQ2013H is generally used for the monitoring of high-capacity battery electric weight in high rate discharge system.The self discharge of battery is estimated by inner timer and temperature sensor, and the compensation of battery temperature, charge rate and self-discharge rate is applied to charge counter, and this counter can provide active volume information under a wide operating conditions.Initial battery capacity, self-discharge rate, display mode and charge compensation can arrange with the pin of chip.Battery is from full to a discharge cycle of sky, and actual battery capacity can be by automatically " study " of chip.
bQ2013H supports that a simple mongline bidirectional serial ports is connected to external microprocessor (altogether), and the external command of die response serial ports, exports corresponding battery information.In order to support the test of electric battery, output can be controlled by ordering, and microprocessor can be revised some data registers of chip.BQ2013H can directly monitor 4 nickel-based battery unit and 3 lead-acid battery cells, connects a transistor at the REF of BQ2013H chip output pin, can form simple, a cheap voltage regulator.In the cellular system of multiple batteries, power supply is provided can to the VCC pin of chip.Internal register comprises available power, temperature, capacity, battery ID, battery status register; BQ2013H monitoring inputs or outputs the number of rechargeable battery electric charge, judges battery capacity.BQ2013H measures electric discharge and charging current, estimates self discharge electric charge, and the battery of monitoring low voltage threshold, does the compensation of temperature and charge rate.Between battery cathode and wiring board ground, be connected in series a little value and detect resistance, carry out charge measurement by the voltage of monitoring this resistance.The measurement of available power is by monitoring time dependent voltage, and proofreaies and correct that the error that causes completes because environment and service condition affect.
bQ2013H accumulative total is measured charging and discharging electric current, self discharge is estimated, according to charge rate and temperature compensation charging current simultaneously.The numerical value of the offset of discharge current based on being stored in register LCOMP.LCOMP register allows chip automatically to adjust with continuous little discharge current.BQ2013H repays self-discharge rate according to the value complement of LC-OMP register and temperature.
whole system comprises the modules such as accumulator, load circuit, electric quantity monitoring, single-chip microcomputer, LED demonstration, and system adopts the storage battery power supply of 12 V/12 Ah, and load also comprises external power partial circuit except system self.The electric weight of BQ2013H monitoring accumulator, and driving LED shows dump energy with 20% increment.Chip adopts HDQ protocol communication, sends the value of related register to single chip computer AT mega64L, and then single-chip microcomputer handles accordingly the data that collect.And by the master chip ATmega16A communication in RS232 communication port and manual control box, the data on BQ2013H are shown by the LED of manual control box.
this system adopts the power management chip BQ2013H of TI company as the core of system, and accumulator 12 V voltages carry out voltage-regulation by field effect transistor BSS138, for BQ2013H chip provides the supply voltage about 5.2 V.Battery tension is through two electric resistance partial pressures of resistance, as the discharge threshold voltage of chip.Detect the resistance that resistance adopts 0.005 Ω/3 W, the voltage signal collecting is input to the SR pin of chip after RC filtering, according to battery types, capacity, detection resistance, be to wire jumper setting, and make to meet the situation that current battery uses.HDQ connects the I/O mouth of single-chip microcomputer by pull-up resistor.RB provides power down protection voltage for register.
the above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; the variation that can expect without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (6)
1. a battery electric quantity detection system, is characterized in that: this detection system comprises:
Accumulator: described accumulator is for system power supply;
Single-chip microcomputer: described single-chip microcomputer is ATmega64L, is connected in described accumulator;
Load circuit: comprise system self and external power circuit, be connected in described single-chip microcomputer and accumulator;
Electric quantity monitoring module: described electric weight detection module is chip BQ2013H, is connected in described single-chip microcomputer and accumulator;
LED display module: comprise control chip, this module is connected in described single-chip microcomputer and accumulator, for showing dump energy, control chip makes the measured value on ATmega64L control LED demonstration output by ATmega16 by RS232 communication.
2. a kind of battery electric quantity detection system according to claim 1, is characterized in that: between the negative pole of described accumulator and the ground of wiring board, be serially connected with detection resistance, described detection resistance is the resistance of 0.005 Ω/3 W.
3. a kind of battery electric quantity detection system according to claim 2, is characterized in that: the capacity of described accumulator is 12V/12Ah.
4. a kind of battery electric quantity detection system according to claim 1, is characterized in that: the control chip of described LED display module is ATmega16A.
5. a kind of battery electric quantity detection system according to claim 1, is characterized in that: described accumulator is provided with the voltage-regulating system of field effect transistor composition.
6. a kind of battery electric quantity detection system according to claim 1, is characterized in that: between described single-chip microcomputer and described LED display module control chip, carry out communication by RS232.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310723424.6A CN104062593A (en) | 2014-04-03 | 2014-04-03 | Battery power detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310723424.6A CN104062593A (en) | 2014-04-03 | 2014-04-03 | Battery power detection system |
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| CN104062593A true CN104062593A (en) | 2014-09-24 |
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| CN201310723424.6A Pending CN104062593A (en) | 2014-04-03 | 2014-04-03 | Battery power detection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113176514A (en) * | 2021-04-28 | 2021-07-27 | 广州市宇连电子有限公司 | Intelligent battery electric quantity monitoring isolation circuit of battery car |
| CN113640689A (en) * | 2021-06-22 | 2021-11-12 | 宁波市信测检测技术有限公司 | Electric quantity system tester |
-
2014
- 2014-04-03 CN CN201310723424.6A patent/CN104062593A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113176514A (en) * | 2021-04-28 | 2021-07-27 | 广州市宇连电子有限公司 | Intelligent battery electric quantity monitoring isolation circuit of battery car |
| CN113176514B (en) * | 2021-04-28 | 2024-02-02 | 广州市宇连电子有限公司 | Intelligent battery electric quantity monitoring isolation circuit of storage battery car |
| CN113640689A (en) * | 2021-06-22 | 2021-11-12 | 宁波市信测检测技术有限公司 | Electric quantity system tester |
| CN113640689B (en) * | 2021-06-22 | 2024-04-16 | 宁波市信测检测技术有限公司 | Electric quantity system tester |
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Application publication date: 20140924 |