CN100538384C - A kind of test macro of power cell source - Google Patents
A kind of test macro of power cell source Download PDFInfo
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- CN100538384C CN100538384C CNB2007100724287A CN200710072428A CN100538384C CN 100538384 C CN100538384 C CN 100538384C CN B2007100724287 A CNB2007100724287 A CN B2007100724287A CN 200710072428 A CN200710072428 A CN 200710072428A CN 100538384 C CN100538384 C CN 100538384C
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Abstract
A kind of test macro of power cell source, what it related to is the technical field of measurement and test of battery source.It is for solving that prior art is measured the working current of electrokinetic cell and the meter of the energy SOC of battery is counted in the bigger error of existence, and its error is more than ± 10%, and causes single battery overvoltage or under-voltage and problem that damage.Its display circuit (3), CAN transceiver (4) connect respectively on the microprocessor chip (2), a plurality of electric voltage equalization testing circuits (12), current sensor (13) are connected on the microprocessor chip (2) by a plurality of multiselect one analog switching circuits (1), and audible-visual annunciator (6) is connected on the microprocessor chip (2) by feedback module circuit (5).The present invention can measure accurately to the working current of power cell source and the energy SOC of battery, the range of current of its measurement reaches-200A～+ 200A, its precision of measuring the energy SOC of battery can reach ± 4%, and have simple in structure, be easy to safeguard advantage.
Description
Technical field
What the present invention relates to is the field of measuring technique of battery source.
Background technology
Power battery pack refers to the electric battery that very strong driving force can be provided.It is applicable to hybrid vehicle, electric automobile, portable station, Mobile Data Base Station etc.Power battery pack generally is to be in series by multiple batteries.After the multiple batteries series connection; each battery discharge unbalanced phenomena in use can appear; the energy SOC of the battery that is embodied in (State of Charge; be called for short SOC; be battery electric quantity) can be lower than other batteries, if continue discharge, then when assembled battery total voltage does not also drop to protection voltage; the voltage that some single battery can occur has dropped to the lower limit of this batteries, if continue the permanent damages that this batteries will appear in discharge again.But prior art is measured the working current of electrokinetic cell and the meter of the energy SOC of battery is counted in the bigger error of existence, and its error is more than ± 10%, and causes single battery overvoltage or under-voltage and damage.
Summary of the invention
The objective of the invention is in order to solve that prior art is measured the working current of electrokinetic cell and the meter of the energy SOC of battery to be counted in the bigger error of existence, its error is more than ± 10%, and causes single battery overvoltage or under-voltage and problem that damage.And a kind of test macro of power cell source is proposed.
The present invention by a plurality of multiselect one analog switching circuits 1, microprocessor chip 2, display circuit 3, CAN transceiver 4, feedback module circuit 5, audible-visual annunciator 6, show current cell voltage button 7, show current battery current button 8, show current battery SOC button 9, show current operating temperature button 10, form by normal button 11, a plurality of electric voltage equalization testing circuit 12, current sensor 13 for display working condition;
Each multiselect one analog switching circuit 1 enable that the control input end all is connected to microprocessor chip 2 each enable the control output end; The selection signal input part of each multiselect one analog switching circuit 1 all is connected on the selection signal output part of microprocessor chip 2, the analog signal output of each multiselect one analog switching circuit 1 all is connected on the A/D conversion input end of microprocessor chip 2, the video data input bus end and the signal input end of display circuit 3 is connected the video data output bus end and the display control signal output terminal of microprocessor chip 2 respectively, the data output input bus end and the signal input end of CAN transceiver 4 is connected the CAN communication data output input bus end and the CAN control signal output ends of microprocessor chip 2 respectively, the CAN bus port of CAN transceiver 4 connects the CAN bus, the data output input bus end of feedback module circuit 5 connects the external control data output input bus end of microprocessor chip 2, an external control signal output terminal of feedback module circuit 5 connects the signal input end of audible-visual annunciator 6, an end that shows current cell voltage button 7, an end that shows current battery current button 8, an end that shows current battery SOC button 9, an end that shows current operating temperature button 10, a display working condition whether end of normal button 11 all connects five signal input end of microprocessor chip 2 respectively, the other end that shows current cell voltage button 7, the other end that shows current battery current button 8, the other end that shows current battery SOC button 9, the other end that shows current operating temperature button 10, whether display working condition other end ground connection all of normal button 11, two voltage signal output ends of each electric voltage equalization testing circuit 12 all are connected on the respective input of corresponding multiselect one analog switching circuit 1, three input ends of each electric voltage equalization testing circuit 12 connect in the electric battery 14 end of a batteries in adjacent two batteries respectively, the common port of two batteries and the other end of another batteries, current sensor 13 is connected in series with electric battery 14, and the sensed current signal output terminal of current sensor 13 connects the respective input of multiselect one analog switching circuit 1.
Principle of work: microprocessor chip 2 is by the gating to a plurality of multiselect one analog switching circuits 1, read the voltage signal of single battery in the balanced testing circuit 12 detected battery sources of correspondent voltage, also read simultaneously the current signal of the battery source of current sensor 13 collections, carry out the integrated logic calculation process, send the instruction of control and sound and light alarm, by 6 work of feedback module circuit 5 guide sound light crossing-signals, by showing current cell voltage button 7, show current battery current button 8, show current battery SOC button 9, show current operating temperature button 10, whether normal button 11 demonstrates corresponding data to display working condition in display circuit 3.
The present invention can measure accurately to the working current of power cell source and the energy SOC of battery, the range of current of its measurement reaches-200A～+ 200A, its precision of measuring the energy SOC of battery can reach ± 4%, and have simple in structure, be easy to safeguard advantage.
Description of drawings
Fig. 1 is an electrical block diagram of the present invention.
Embodiment
Embodiment one: in conjunction with Fig. 1 present embodiment is described, this embodiment by a plurality of multiselect one analog switching circuits 1, microprocessor chip 2, display circuit 3, CAN transceiver 4, feedback module circuit 5, audible-visual annunciator 6, show current cell voltage button 7, show current battery current button 8, show current battery SOC button 9, show current operating temperature button 10, form by normal button 11, a plurality of electric voltage equalization testing circuit 12, current sensor 13 for display working condition;
Each multiselect one analog switching circuit 1 enable that the control input end all is connected to microprocessor chip 2 each enable the control output end; The selection signal input part of each multiselect one analog switching circuit 1 all is connected on the selection signal output part of microprocessor chip 2, the analog signal output of each multiselect one analog switching circuit 1 all is connected on the A/D conversion input end of microprocessor chip 2, the video data input bus end and the signal input end of display circuit 3 is connected the video data output bus end and the display control signal output terminal of microprocessor chip 2 respectively, the data output input bus end and the signal input end of CAN transceiver 4 is connected the CAN communication data output input bus end and the CAN control signal output ends of microprocessor chip 2 respectively, the CAN bus port of CAN transceiver 4 connects the CAN bus, the data output input bus end of feedback module circuit 5 connects the external control data output input bus end of microprocessor chip 2, an external control signal output terminal of feedback module circuit 5 connects the signal input end of audible-visual annunciator 6, an end that shows current cell voltage button 7, an end that shows current battery current button 8, an end that shows current battery SOC button 9, an end that shows current operating temperature button 10, a display working condition whether end of normal button 11 all connects five signal input end of microprocessor chip 2 respectively, the other end that shows current cell voltage button 7, the other end that shows current battery current button 8, the other end that shows current battery SOC button 9, the other end that shows current operating temperature button 10, whether display working condition other end ground connection all of normal button 11, two voltage signal output ends of each electric voltage equalization testing circuit 12 all are connected on the respective input of corresponding multiselect one analog switching circuit 1, three input ends of each electric voltage equalization testing circuit 12 connect three ends of adjacent two batteries in the electric battery 14 respectively, current sensor 13 is connected in series with electric battery 14, and the sensed current signal output terminal of current sensor 13 connects the respective input of multiselect one analog switching circuit 1.
Described electric voltage equalization testing circuit 12 is made up of resistance R 1, resistance R 2, relay T1, relay T2, operational amplifier U1, reverser U2, the first tension measuring circuit 12-1, the second tension measuring circuit 12-2; One end of resistance R 1 connects the input end of the first tension measuring circuit 12-1 and connects an end of corresponding single battery in the electric battery 14, the other end of resistance R 1 connects the stationary contact of relay T1, the moving contact of relay T1, one end of resistance R 2, another input end of the first tension measuring circuit 12-1 connects the input end of the second tension measuring circuit 12-2 and connects in the electric battery 14 end of a batteries in adjacent two batteries, the other end of resistance R 2 connects the stationary contact of relay T2, the moving contact of relay T2 connects another input end of the second tension measuring circuit 12-2 and connects in the electric battery 14 end of another batteries in adjacent two batteries, the input end in the same way of the output terminal concatenation operation amplifier U1 of the first tension measuring circuit 12-1 also connects on the respective input of multiselect one analog switching circuit 1, the reverse input end of the output terminal concatenation operation amplifier U1 of the second tension measuring circuit 12-2 also connects on the respective input of multiselect one analog switching circuit 1, the control input end of relay T1, the output terminal of operational amplifier U1 connects the input end of reverser U2, and the output terminal of reverser U2 connects the control input end of relay T2;
The described first tension measuring circuit 12-1 is made up of resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, operational amplifier U3, operational amplifier U4; One end of resistance R 3 connects an end of resistance R 1, the other end of resistance R 3, the input end in the same way of one end concatenation operation amplifier U3 of resistance R 4, the other end of resistance R 4 connects an end of resistance R 7 and connects the Vref end, the other end of resistance R 7, the reverse input end of one end concatenation operation amplifier U4 of resistance R 9, the output terminal of the other end concatenation operation amplifier U4 of resistance R 9 also connects the input end in the same way of operational amplifier U1, one end of resistance R 5 connects an end of resistance R 2, the other end of resistance R 5, the reverse input end of one end concatenation operation amplifier U3 of resistance R 6, the other end of resistance R 6, the output terminal of one end concatenation operation amplifier U3 of resistance R 8, the other end of resistance R 8, the input end in the same way of one end concatenation operation amplifier U4 of resistance R 10, the other end ground connection of resistance R 10; The composition of the second tension measuring circuit 12-2 is identical with composition and the annexation of the first tension measuring circuit 12-1 with annexation.The Vref end is reference voltage.
The model that multiselect one analog switching circuit 1 is selected for use is ADG706 (16 select one), the model that microprocessor chip 2 is selected for use is MC68HC08GZ32, the model that display circuit 3 is selected for use is TRULYM12864-1B4, the model that CAN transceiver 4 is selected for use is MC33388, the model that current sensor 13 is selected for use is ACS754SCB-200, the model that relay T1, relay T2 select for use all is JGC-8F, the model that operational amplifier U1 selects for use is LM339, and the model that operational amplifier U3, operational amplifier U4 select for use all is LM324.
Native system carries out analyzing and processing with the data (as: each monomer battery voltage, system power, working temperature etc.) of the power cell source that collects.Refresh LCD according to analysis processing result and show, the running parameter of power cell source is provided in real time.And when power cell source overtension (surpassing upper threshold value) or low excessively (being lower than lower threshold value), send sound and light alarm automatically, and produce control signal control power cell source cut-off loop.In addition, system provides 6 function buttons, and system will carry out corresponding actions when pushing button, and they are respectively: system reset, error-detecting, LCD displays temperature, LCD display voltage, LCD show that electric current, LCD show SOC.System provides CAN bus interface in addition, has the CAN transceiver, and at the inner built-in CAN controller of MCU, can receive the signal that other nodes send and operate accordingly.Measure each battery B by tension measuring circuit
iVoltage U
i, with adjacent voltage U
iAnd U
I+1Be input to voltage comparator and compare, like this if U
iU
I+1, B is described
iCell voltage is higher, this moment the voltage comparator output low level, relay i conducting is to battery B
iDischarge, it is consistent with adjacent cell voltage that voltage is reduced to; Otherwise, if U
i＜U
I+1, then relay i+1 conducting is to battery B
I+1Discharge.Like this, promptly can realize dynamic unanimity between the battery cell monomer by equalizing circuit.Because the unbalanced phenomena of battery is to add up gradually to occur, if during unbalanced phenomena, energy difference is very little, therefore equalizing circuit is not always in work, just just work when energy difference is accumulated to a certain degree, after energy difference was reduced to allowed band, equalizing circuit quit work.
Claims (2)
1, a kind of test macro of power cell source is characterized in that whether normally button (11), a plurality of electric voltage equalization testing circuit (12), current sensor (13) are formed by a plurality of multiselect one analog switching circuits (1), microprocessor chip (2), display circuit (3), CAN transceiver (4), feedback module circuit (5), audible-visual annunciator (6), demonstration current cell voltage button (7), demonstration current battery current button (8), demonstration current battery SOC button (9), demonstration current operating temperature button (10), display working condition for it;
Each multiselect one analog switching circuit (1) enable that the control input end all is connected to microprocessor chip (2) each enable the control output end; The selection signal input part of each multiselect one analog switching circuit (1) all is connected on the selection signal output part of microprocessor chip (2), the analog signal output of each multiselect one analog switching circuit (1) all is connected on the A/D conversion input end of microprocessor chip (2), the video data input bus end and the signal input end of display circuit (3) is connected the video data output bus end and the display control signal output terminal of microprocessor chip (2) respectively, the data output input bus end and the signal input end of CAN transceiver (4) is connected the CAN communication data output input bus end and the CAN control signal output ends of microprocessor chip (2) respectively, the CAN bus port of CAN transceiver (4) connects the CAN bus, the data output input bus end of feedback module circuit (5) connects the external control data output input bus end of microprocessor chip (2), an external control signal output terminal of feedback module circuit (5) connects the signal input end of audible-visual annunciator (6), an end that shows current cell voltage button (7), an end that shows current battery current button (8), an end that shows current battery SOC button (9), an end that shows current operating temperature button (10), a display working condition whether end of normal button (11) all connects five signal input end of microprocessor chip (2) respectively, the other end that shows current cell voltage button (7), the other end that shows current battery current button (8), the other end that shows current battery SOC button (9), the other end that shows current operating temperature button (10), whether display working condition other end ground connection all of normal button (11), two voltage signal output ends of each electric voltage equalization testing circuit (12) all are connected on the respective input of corresponding multiselect one analog switching circuit (1), three input ends of each electric voltage equalization testing circuit (12) connect in the electric battery (14) end of a batteries in adjacent two batteries respectively, the common port of two batteries and the other end of another batteries, current sensor (13) is connected in series with electric battery (14), and the sensed current signal output terminal of current sensor (13) connects the respective input of multiselect one analog switching circuit (1).
2, the test macro of a kind of power cell source according to claim 1 is characterized in that described electric voltage equalization testing circuit (12) is made up of resistance R 1, resistance R 2, relay T1, relay T2, operational amplifier U1, reverser U2, first tension measuring circuit (12-1), second tension measuring circuit (12-2);
One end of resistance R 1 connects an input end of first tension measuring circuit (12-1) and connects an end of corresponding single battery in the electric battery (14), the other end of resistance R 1 connects the stationary contact of relay T1, the moving contact of relay T1, one end of resistance R 2, another input end of first tension measuring circuit (12-1) connects an input end of second tension measuring circuit (12-2) and connects in the electric battery (14) end of a batteries in adjacent two batteries, the other end of resistance R 2 connects the stationary contact of relay T2, the moving contact of relay T2 connects another input end of second tension measuring circuit (12-2) and connects in the electric battery (14) end of another batteries in adjacent two batteries, the input end in the same way of the output terminal concatenation operation amplifier U1 of first tension measuring circuit (12-1) also connects on the respective input of multiselect one analog switching circuit (1), the reverse input end of the output terminal concatenation operation amplifier U1 of second tension measuring circuit (12-2) also connects on the respective input of multiselect one analog switching circuit (1), the control input end of relay T1, the output terminal of operational amplifier U1 connects the input end of reverser U2, and the output terminal of reverser U2 connects the control input end of relay T2; Described first tension measuring circuit (12-1) is made up of resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, operational amplifier U3, operational amplifier U4; One end of resistance R 3 connects an end of resistance R 1, the other end of resistance R 3, the input end in the same way of one end concatenation operation amplifier U3 of resistance R 4, the other end of resistance R 4 connects an end of resistance R 7, the other end of resistance R 7, the reverse input end of one end concatenation operation amplifier U4 of resistance R 9, the output terminal of the other end concatenation operation amplifier U4 of resistance R 9 also connects the input end in the same way of operational amplifier U1, one end of resistance R 5 connects an end of resistance R 2, the other end of resistance R 5, the reverse input end of one end concatenation operation amplifier U3 of resistance R 6, the other end of resistance R 6, the output terminal of one end concatenation operation amplifier U3 of resistance R 8, the other end of resistance R 8, the input end in the same way of one end concatenation operation amplifier U4 of resistance R 10, the other end ground connection of resistance R 10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100724287A CN100538384C (en) | 2007-06-29 | 2007-06-29 | A kind of test macro of power cell source |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100724287A CN100538384C (en) | 2007-06-29 | 2007-06-29 | A kind of test macro of power cell source |
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| CN101078749A CN101078749A (en) | 2007-11-28 |
| CN100538384C true CN100538384C (en) | 2009-09-09 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777781B (en) * | 2009-12-30 | 2012-07-04 | 湖南科力远高技术控股有限公司 | Electromobile modularization battery management system |
| CN102136741A (en) * | 2010-01-22 | 2011-07-27 | 深圳富泰宏精密工业有限公司 | Power supply device and discharging method thereof |
| CN102064575B (en) * | 2010-11-22 | 2013-06-12 | 奇瑞汽车股份有限公司 | Method and device for correcting deviation of voltage collection in battery management system of electric automobile |
| CN102486529B (en) * | 2010-12-03 | 2014-02-19 | 上海同沪电气科技股份有限公司 | Method for detecting state of charge of series super-capacitor bank for urban rail vehicle |
| CN102865942B (en) * | 2011-07-04 | 2014-07-16 | 杭州市电力局 | Temperature testing method, device and system of power cells |
| CN103235264B (en) * | 2012-11-09 | 2015-06-24 | 常州工学院 | Battery SOC (stage of charge) measurement method and device |
| CN107204639A (en) * | 2014-06-10 | 2017-09-26 | 申清章 | Reactive-load compensation storage battery monitoring system |
| CN105785269A (en) * | 2014-12-22 | 2016-07-20 | 深圳市中兴微电子技术有限公司 | Battery electricity level metering system and method |
| CN108983101B (en) * | 2017-06-02 | 2020-11-10 | 中国移动通信集团河北有限公司 | Storage battery capacity analysis method, storage battery capacity analysis device, storage battery capacity analysis equipment and computer readable storage medium |
| CN110571484A (en) * | 2019-09-19 | 2019-12-13 | 深圳市道通智能航空技术有限公司 | Battery management system, method and storage medium |
| CN111308238B (en) * | 2020-02-07 | 2022-08-05 | 中电科信息产业有限公司 | Battery simulator and system of electric bicycle and charger detection method |
| CN113376431B (en) * | 2021-06-28 | 2022-05-06 | 东风汽车集团股份有限公司 | High-precision voltage detection circuit and detection method |
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2007
- 2007-06-29 CN CNB2007100724287A patent/CN100538384C/en not_active Expired - Fee Related
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