CN203037826U - Lithium battery charging tester - Google Patents
Lithium battery charging tester Download PDFInfo
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- CN203037826U CN203037826U CN 201220717546 CN201220717546U CN203037826U CN 203037826 U CN203037826 U CN 203037826U CN 201220717546 CN201220717546 CN 201220717546 CN 201220717546 U CN201220717546 U CN 201220717546U CN 203037826 U CN203037826 U CN 203037826U
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- lithium battery
- master control
- circuit
- charging
- control borad
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Abstract
The utility model provides a lithium battery charging tester and relates to the technical field of batteries. The main input power of the tester is supplied by two 12V plumbic acid batteries. The voltage is 24V, and allowed voltage fluctuation is +/-5V. The plumbic acid batteries are mainly used for charging 10 lithium batteries with 28V voltage. The lithium battery charging tester is characterized in that the tester comprises a main control board; the main control board is connected with a main circuit; the plumbic acid batteries are connected with the main circuit through a filter and a DC-DC converter, so as to power the main circuit; the main circuit is connected with the lithium batteries to charge the lithium batteries; the lithium batteries are connected with a discharging board; and the discharging board is connected with the main control board through a discharging control circuit. The lithium battery charging tester provided by the utility model has the advantages of reliable and economic hardware circuit and strong anti-interference ability, and has accurate residual capacity estimation through practical testing.
Description
Technical field
The utility model relates to the battery technology field, is specifically related to a kind of lithium battery charging detector.
Background technology
Along with the development of society, human demand for the energy will constantly increase, and natural energy sources such as traditional oil, rock gas, coal, approach exhaustion gradually, and the environmental problem that thereupon causes is also being increasingly sharpened.Therefore, the epoch are given our an arduous mission, seek a kind of substitute energy exactly, substitute the natural calculus-dissolving energy that uses at present.Electric energy is a kind of secondary energy, is characterized in that the approach that obtains is many, and generation is polluted also smaller.Therefore, electric energy might become the substitute energy in next epoch.
Yet for the storage of electric energy, to carry be that very stubborn problem, especially an electric energy are used for these facilities that movably consume energy such as automobile, it is a critical problem that the storage of electric energy is carried.More effective means utilize accumulator to come storage of electrical energy exactly now.So to accumulators store electric energy and effectively utilize electric energy, will become a very crucial problem.Battery management system manages and some corresponding safeguard measures for the charging and discharging of accumulator.Battery management system mainly comprises the management of charging and discharging of battery, and battery temperature detects, cell voltage current detecting, electric weight estimation etc.Yet accumulator is of a great variety, and relatively commonly used have lead-acid battery, nickel-cadmium battery, a lithium battery etc.The specific volume of lead-acid battery is little, and just under identical capacity, the weight and volume of battery is all bigger, and the life-span of its battery is undesirable; Nickel-cadmium battery, its material has severe toxicity, and the capacity of battery and life-span, and is also all undesirable, so be difficult to generally use.
And the research of lithium battery and produce and all to have obtained great progress, in the application of every field also more and more widely.Sparking voltage is stable because lithium battery has, and operating temperature range is wide, and self-discharge rate is low, storage life is long, memory-less effect, and volume is little, advantage such as in light weight and nuisanceless substitutes lead-acid accumulator, cadmium-nickel storage cell at present gradually, becomes the main flow of electrokinetic cell.In recent years, lithium battery also is studied personnel and is used on underwater robot and the electric automobile as power source, and the management of lithium battery and application become one of gordian technique of development such as underwater robot and electric automobile.Battery management system directly detects and manages the overall process of energy-storage battery work, comprise that battery charge and discharge process management, battery temperature detection, cell voltage current detecting, electric weight are estimated, several aspects such as the equilibrium between cell, battery failures diagnosis, domestic battery management system at electric automobile still is in the starting stage.
The utility model content
It is a kind of simple in structure that technical problem to be solved in the utility model is to provide, the lithium battery charging detector that intelligent degree is high.
Technical problem to be solved in the utility model realizes by the following technical solutions:
A kind of lithium battery charging detector, described detector primary input power supply is that the lead-acid battery by two 12V provides, its voltage is about 24V, allow the fluctuation of its voltage to be ± 5V, it mainly is the lithium cell charging that is 28V for 10 voltages, it is characterized in that: described detector comprises a master control borad, described master control borad control linkage has main circuit, and described lead-acid battery is connected to main circuit through wave filter and DC-DC transducer, is the main circuit power supply, described main circuit is connected to lithium battery, be lithium cell charging, described lithium battery is connected with discharge electrode, and described discharge electrode is connected by charge/discharge control circuit with master control borad, accept the control of master control borad, mainly for discharge, prevent from that main circuit from going wrong to cause battery to damage because overcharging, be subjected to the control of master control borad, come lithium battery is discharged, discharge resistance mainly is the bigger aluminium Shell resistance of power ratio, and because discharge electrode produces a large amount of heat sometimes, so when design, one group of special small fan is arranged, it is lowered the temperature.
Described master control borad communication link is connected to display board, the message reflection that needs are shown is to the charactron that shows, comprise charging current, lithium battery voltage, discharge current, discharge time, electric weight estimation (AH of unit) etc., communication mode with master control borad, it is the iic bus of simulation, because the distance of master control borad and display board closer (general 10cm) is so this communication pattern also can satisfy the needs of system fully.
Described master control borad comprises that mainly data sampling, data are handled and driving control three parts, and described data sampling is connected to data and handles, and described data are handled to be connected to drive and controlled;
Data sampling circuit is to input and output voltage; output current; the switching tube electric current; lithium battery temperature etc. is sampled; by single-chip microcomputer the data of gathering are focused on then; send steering order at last; realize regulating defencive functions such as output and over-voltage and over-current by Drive and Control Circuit; average current and peak point current double-current ring control mode are adopted in control; effectively protection switch pipe and fast recovery diode; avoid under the situation of short circuit and overcurrent, damaging switching tube and fast recovery diode; overvoltage/undervoltage; holding circuit such as overheated can effectively guarantee the to charge process of monitor work is safer; reliably, make complete machine carry out work under the complex environment more.
In addition, in order to guarantee the realization of functions such as data sampling, data are handled, driving control, also need some auxiliary circuit, single chip circuit, control panel feed circuit, single chip circuit, it is the control center of whole master control borad circuit, all control signals are all handled by it, and give an order, the master control borad feed circuit, because the voltage of input is 24V ± 5V, and required voltage has 3.3V, 5V and 15V on the master control borad, so need change from 24V, so on the control circuit board master control borad feed circuit must be arranged.
Described display board is shown, worked by data, and warning is indicated and duty selects three parts to form, and described data show to be finished by three charactrons, and the work warning is indicated and finished by LED light, and the duty selection is then finished by change-over switch.
Carry out data transmission by the IIC communication between display board and the master control borad, display board is responsible for selecting signal to send master control borad to duty and is handled, master control borad then is sent to display board to displaying contents and system state and shows, simultaneously, display board circuit also comprises a series of circuit, comprise single-chip microcomputer, program burn writing mouth, with the master control board communication port, show charactron diode, gauge tap.
The beneficial effects of the utility model are: the utility model hardware circuit is reliable, economy, antijamming capability are strong, and is more accurate through the estimation of practice test residual capacity.
Description of drawings
Fig. 1 is the utility model frame principle figure.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, a kind of lithium battery charging detector, detector primary input power supply is that the lead-acid battery by two 12V provides, its voltage is about 24V, allow the fluctuation of its voltage to be ± 5V, it mainly is the lithium cell charging that is 28V for 10 voltages, the electric weight of general two lead-acid batteries, can not satisfy 10 lithium batteries is full of, two kinds of ways can be arranged, the one, one group of lead-acid battery of changing-over, the 2nd, charge to lead-acid battery with the charging set limit again, the latter uses the reason to the lead-acid battery charging, is that the discharge current of lead-acid battery is better than the DC current quality of charging set charging.Detector comprises a master control borad, master control borad connects control linkage main circuit, lead-acid battery is connected to main circuit through wave filter and DC-DC transducer, be the main circuit power supply, main circuit is connected to lithium battery, is lithium cell charging, lithium battery is connected with discharge electrode, discharge electrode is connected with master control borad, accepts the control of master control borad, mainly for discharge, preventing that main circuit from going wrong causes battery to damage because overcharging, be subjected to the control of master control borad, come lithium battery is discharged, discharge resistance mainly is the bigger aluminium Shell resistance of power ratio, and because discharge electrode, produce a large amount of heat sometimes, so when design, one group of special small fan is arranged, it is lowered the temperature.Because the voltage of input is 24V ± 5V, be 28V and need the battery of charging, so charging voltage must be greater than 28V, just might realize the charging to the 28V lithium battery, therefore, must boost, be raised to the state that is higher than 28V by 24V ± 5V, concrete voltage how much, then has master control borad to decide.Master control borad is the brain of total system, and the various piece work of command system also is the key point of total system, is the topmost part of system's design effort.
The master control borad communication link is connected to display board, and the message reflection that needs are shown comprises that charging current, lithium battery voltage, discharge current, discharge time, electric weight estimate (AH of unit) etc. to the charactron that shows, with the communication mode of master control borad, be the I of simulation
2The C bus, because the distance of master control borad and display board closer (general 10cm), so this communication pattern also can satisfy the needs of system fully.
Main circuit is a booster circuit, its principle is boost chopper, input direct current 24V for the power supply of DC-DC transducer, obtains direct current square wave that frequency be 50kHz by the control to switching tube Q2, Q3 through wave filter, obtains required DC voltage through filtering circuit filtering then.
The input voltage that detects Charging Instrument is direct current 24V ± 5V, be output as 10 the tunnel, every road Maximum Power Output is that 3.5A * 29.4V (the lithium battery constant-voltage charge is 29.4V) approximates 102W, the peak power output of battery detecting charging system is about 10 * 102W=1020W, efficient is 90%, the power input of battery detecting charging system is 1020 ÷ 0.9=1133W, so maximum input current I
InBe P
Output÷ U
In=1133 ÷ 19=59A, average every road 5.9A.Therefore every road input side should be selected the wave filter of 30V/6A specification at least, and wave filter could safe work like this.Switching tube is selected metal-oxide-semiconductor IRF540 (27A/100V, RDS=0.044 Ω) for use, and withstand voltage and maximum current are all greater than the required voltage electric current.L1 selects D05022-474 for use, and sensibility reciprocal 200uH though sensibility reciprocal is the bigger the better, and is enough to satisfy the needs of circuit.Diode is selected MBR10100 (10A/100V) for use, and withstand voltage and maximum current is all greater than the required voltage electric current, and in order to consider the cost problem, selects for use this class component enough.Electrochemical capacitor selects two parallel connections of 50V/470 μ F, and the appearance value is 940uF like this, can satisfy the circuit needs.
Master control borad mainly comprises data sampling; control three parts are handled and driven to data; data sampling circuit is to input and output voltage; output current; the switching tube electric current; lithium battery temperature etc. is sampled; by single-chip microcomputer the data of gathering are focused on then; send steering order at last; realize regulating defencive functions such as output and over-voltage and over-current by Drive and Control Circuit; average current and peak point current double-current ring control mode are adopted in control; effectively protection switch pipe and fast recovery diode; avoid under the situation of short circuit and overcurrent, damaging switching tube and fast recovery diode; overvoltage/undervoltage; holding circuit such as overheated can effectively guarantee the to charge process of monitor work is safer; reliably, make complete machine carry out work under the complex environment more.
In addition, in order to guarantee the realization of functions such as data sampling, data are handled, driving control, also need some auxiliary circuit, single chip circuit, control panel feed circuit.Single chip circuit is the control center of The whole control plate circuit, and all control signals are all handled by it, and give an order.The control panel feed circuit, because the voltage of input is 24V ± 5V, and required voltage has 3.3V, 5V and 15V on the control panel, thus need change from 24V, so on the control circuit board control panel feed circuit must be arranged.
Display board is shown, worked by data, and warning is indicated and duty selects three parts to form, and data show to be finished by three charactrons, and the work warning is indicated and finished by LED light, and the duty selection is then finished by change-over switch.Carry out data transmission by the IIC communication between display board and the master control borad, display board is responsible for selecting signal to send master control borad to duty and is handled, master control borad then is sent to display board to displaying contents and system state and shows, simultaneously, display board also comprises a series of circuit, comprise single-chip microcomputer, program burn writing mouth, with the master control board communication port, show charactron diode, gauge tap.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. lithium battery charging detector, described detector primary input power supply is that the lead-acid battery by two 12V provides, its voltage is 24V, allow the fluctuation of its voltage to be ± 5V, it mainly is the lithium cell charging that is 28V for 10 voltages, it is characterized in that: described detector comprises a master control borad, described master control borad control linkage has main circuit, described lead-acid battery is connected to main circuit through wave filter and DC-DC transducer, be the main circuit power supply, described main circuit is connected to lithium battery, is lithium cell charging, described lithium battery is connected with discharge electrode, and described discharge electrode is connected by charge/discharge control circuit with master control borad.
2. lithium battery according to claim 1 charging detector, it is characterized in that: described master control borad communication link is connected to display board.
3. lithium battery according to claim 1 charging detector, it is characterized in that: described master control borad comprises that data sampling, data are handled and driving control three parts, described data sampling is connected to data and handles, and described data are handled to be connected to and driven control.
4. lithium battery according to claim 2 charging detector, it is characterized in that: described display board is shown, worked by data, and warning is indicated and duty selects three parts to form, described data show to be finished by charactron, work is reported to the police to indicate and is finished by LED light, and duty is selected then to be finished by change-over switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220717546 CN203037826U (en) | 2012-12-07 | 2012-12-07 | Lithium battery charging tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220717546 CN203037826U (en) | 2012-12-07 | 2012-12-07 | Lithium battery charging tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203037826U true CN203037826U (en) | 2013-07-03 |
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ID=48689937
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220717546 Expired - Fee Related CN203037826U (en) | 2012-12-07 | 2012-12-07 | Lithium battery charging tester |
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| Country | Link |
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| CN (1) | CN203037826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340477A (en) * | 2017-01-22 | 2017-11-10 | 中电科海洋信息技术研究院有限公司 | A kind of underwater robot energy management control system and control method |
-
2012
- 2012-12-07 CN CN 201220717546 patent/CN203037826U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340477A (en) * | 2017-01-22 | 2017-11-10 | 中电科海洋信息技术研究院有限公司 | A kind of underwater robot energy management control system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20131207 |