CN101354431B - Apparatus and method for recognizing battery types - Google Patents
Apparatus and method for recognizing battery types Download PDFInfo
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- CN101354431B CN101354431B CN2008100303761A CN200810030376A CN101354431B CN 101354431 B CN101354431 B CN 101354431B CN 2008100303761 A CN2008100303761 A CN 2008100303761A CN 200810030376 A CN200810030376 A CN 200810030376A CN 101354431 B CN101354431 B CN 101354431B
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- voltage
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- tester terminal
- voltage tester
- power brick
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Abstract
The invention discloses a device and a method used for recognising the types of battery. The battery identification equipment comprises a battery package type recognition monomer which provides a recognition voltage according to the element characteristic, and a singlechip processor MCU which carries out the battery package type recognition according to the recognition voltage; the battery package type recognition monomer is connected with the A/D conversion interface of the singlechip processor MCU by a voltage testing terminal T. The device and the method of the invention simply and quickly recognise the type of the battery according to the voltage characteristic of the detailed element and the combined operation of the singlechip processor MCU, and solve the problems that the same charger recognises the batteries of different types and charges the batteries.
Description
Technical field
The present invention relates to the charge in batteries field, relate to the equipment and the method that are used to discern battery types particularly.
Along with battery technology constantly updates, and new material constantly is applied in the accumulator, the type of accumulator constantly increases, current accumulator market mainly is ni-mh (NiMH) battery, NI-G (NiCd) battery and lithium (LI) battery are also deposited, this the situation of dissimilar batteries just occurred having used at same consumer, thereby charger is also had higher requirement, and requires same charger can compatiblely give dissimilar charge in batteries exactly.And because the charging control mode of Li battery and NiMH (or NiCd) battery is not quite similar, this just requires charger must be able to identify the type of accumulator.
The identification power brick of prior art has the following disadvantages: (1) intelligent degree is low, needs the manual testing to contrast identification when the identification battery types, and efficient is low, accuracy is not high; (2) inner identification battery types circuit, complex structure, cost height; (3) identification battery types foundation and method complexity.
The invention provides the apparatus and method that are used to discern battery types, according to concrete element voltage characteristic and with processor of single chip computer MCU binding operation, simple and fast identifies battery types, solves same charger and discerns dissimilar batteries and be the problem of its charging.
In order to achieve the above object, the embodiment of the invention provides the device that is used to discern battery types, comprising:
Power brick type identification monomer provides identification voltage according to the identification diode of its inside and the forward voltage drop of negative coefficient thermistor NTC; Processor of single chip computer MCU carries out the power brick type identification according to described identification voltage; Described power brick type identification monomer is connected with the analog to digital conversion interface of described processor of single chip computer MCU by voltage tester terminal T.
Correspondingly, the embodiment of the invention also provides a kind of method that is used to discern battery types, and step comprises: it is high-impedance state that processor of single chip computer MCU port Po is set, and the magnitude of voltage of measuring voltage tester terminal T is V_
T1, processor of single chip computer MCU port Po output high level is set again, the magnitude of voltage of measuring voltage tester terminal T is V_
T1 ', change in voltage is worth Δ V_ before and after the comparative voltage calibrating terminal T
T1With the described front and back voltage change Δ V_ that measures
T1Compare with the battery types definition list among the processor of single chip computer MCU, thus identification power brick type.
Implement the beneficial effect of the embodiment of the invention: the voltage characteristic that utilizes concrete element in the power brick type identification monomer, be the electronics general knowledge of the forward voltage drop Changing Pattern of diode and negative coefficient thermistor NTC, discern battery types, realize the simplification of distinguishing rule and identification circuit; And with processor of single chip computer MCU binding operation, realize that the intellectuality of battery types is differentiated and the control charging.
Description of drawings
Fig. 1 is the block scheme of the battery identification device of the embodiment of the invention;
Fig. 2 is the cut-away view of the battery identification device of the embodiment of the invention;
Fig. 3 is the power brick type definition table of the embodiment of the invention;
Fig. 4 is the method flow diagram of the identification battery types of the embodiment of the invention;
Fig. 5 is that the MCU that has only T1 to connect NTC (25 ℃ of 10K Ω) in the embodiment of the invention detects schematic diagram;
Fig. 6 is that the MCU that has only T1 to connect D1 in the embodiment of the invention detects schematic diagram.
Below in conjunction with accompanying drawing the embodiment of the invention is described in further detail.
Fig. 1 is the block scheme of battery identification device provided by the invention, and battery identification device 100 comprises power brick type identification monomer 110, provides identification voltage according to self element characteristic; Processor of single chip computer MCU120 carries out the power brick type identification according to described identification voltage, and described power brick type identification monomer 110 is connected with the analog to digital conversion interface (A/D interface) of described processor of single chip computer MCU120 by voltage tester terminal T.
Fig. 2 is the cut-away view of battery identification device provided by the invention, BAT+ is anode connection terminal of power brick, BAT-is the negative pole splicing ear of power brick, voltage tester terminal T is divided into terminal T1 and terminal T2, all connect in the A/D of processor of single chip computer MCU120 interface, power brick type identification monomer 110 can comprise the identification diode D1 of negative coefficient thermistor NTC2, splicing ear T1 of negative coefficient thermistor NTC1, the splicing ear T2 of splicing ear T1.
Wherein, NTC1 and NTC2 adopt identical specification, and when pull-up resistor R1 and R2 were fixed as 100K Ω, its temperature characteristic parameter was as shown in Figure 2:
When temperature was-30 ℃, resistance was 100K Ω, and the T terminal voltage is 2.5V;
When temperature was 25 ℃, resistance was 10K Ω, and the T terminal voltage is 0.45V;
When temperature was 100 ℃, resistance was 1K Ω, and the T terminal voltage is 0.0495V.
Fig. 3 is the power brick type definition table of the embodiment of the invention, and wherein correlation parameter is explained as follows:
V_
T1: voltage is under the normal temperature situation of NTC connecing: 0.0495V (100 ℃)～2.5V (30 ℃) does not connect under the situation of NTC and is 5V;
V_
T2: voltage is under the normal temperature situation of NTC connecing: 0.0495V (100 ℃)～2.5V (30 ℃) does not connect under the situation of NTC and is 5V;
Δ V_
T1: on 100K Ω pull-up resistor basis, and upward be the resistance R 3 of 470K Ω (MCU port P0 is provided with high level), voltage change before and after recording;
NTC: negative tempperature coefficient thermistor;
NC: unsettled;
D1: identification diode 1N4148 (silicone tube)
In conjunction with Fig. 2 and Fig. 3 as can be known, T2 is a NTC splicing ear in NiMH (or LI) power brick, and T1 is NTC in the NiCD power brick (or in a LI power brick identification diode) splicing ear.
Fig. 4 is the method flow diagram of the identification battery types of the embodiment of the invention, and it is high-impedance state that processor of single chip computer MCU120 port Po at first is set, and the magnitude of voltage of measuring voltage tester terminal T is V_
T1, processor of single chip computer MCU port Po output high level is set again, the magnitude of voltage of measuring voltage tester terminal T is V_
T1', relatively change in voltage is worth Δ V_ before and after the terminal T
T1, at last with Δ V_
T1Just can discern the battery particular type with the battery types definition list comparison among the processor of single chip computer MCU120.
Fig. 5 is that the MCU that has only T1 to connect NTC (25 ℃ of 10K Ω) in the embodiment of the invention detects schematic diagram, and Fig. 6 has only T1 to connect the MCU detection schematic diagram of D1 in the embodiment of the invention, in conjunction with Fig. 5 and Fig. 6 forward voltage drop basic fixed according to diode is described, though the variation with forward current changes, but than the much smaller ultimate principle of the change in pressure drop of resistance, processor of single chip computer MCU120 is a type of how discerning power brick by the connection status that detects power brick T1 and T2.In Fig. 5 and Fig. 6, distinguish that t1 port connects is NTC or diode.As long as the situation that we analysis limit NTC temperature (30 ℃ and 100 ℃) MCU detects just can guarantee that normal temperature judges whether accurately.The detection step is as follows:
V_ when P0 being set among Fig. 6 being high-impedance state
T1=410mV, V_ when P0 exports high level then
T1So=670mV is Δ V_
T1=670mV-410mV=260mV;
If the NTC temperature is-30 ℃, V_ when recording P0 among Fig. 2 and being high-impedance state
T1=2.5V, P0 output high level V_ then
T1So=4.975V is Δ V_
T1=4.975V-2.5V=2.475V;
If the NTC temperature is 100 ℃, V_ when recording P0 among Fig. 2 and being high-impedance state
T1=0.0495V, V_ when P0 exports high level then
T1So=3.45V is Δ V_
T1=3.45V-0.0495V=3.4V;
By last analysis as seen, what can distinguish that port connects according to the size of front and back voltage change is NTC or diode, also promptly as Fig. 3 battery types definition list is described.When selecting for use component parameters and this paper not to be inconsistent, can design different voltage range sections according to this principle and be discerned the power brick type.
Implement the beneficial effect of the embodiment of the invention: the voltage characteristic that utilizes concrete element in the power brick type identification monomer, be the electronics general knowledge of the forward voltage drop Changing Pattern of diode and negative coefficient thermistor NTC, discern battery types, realize the simplification of distinguishing rule and identification circuit; And with processor of single chip computer MCU binding operation, realize that the intellectuality of battery types is differentiated and the control charging.
Above disclosed only is preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (4)
1. be used to discern the device of battery types, comprise:
Power brick type identification monomer provides identification voltage according to the identification diode of its inside and the forward voltage drop of negative coefficient thermistor NTC;
Processor of single chip computer MCU carries out the power brick type identification according to described identification voltage;
Described power brick type identification monomer is connected with the analog to digital conversion interface of described processor of single chip computer MCU by voltage tester terminal T;
Described voltage tester terminal T quantity has two, is respectively the first voltage tester terminal T1 and the second voltage tester terminal T2; Comprise the first negative coefficient thermistor NTC1, the second negative coefficient thermistor NTC2 that connects the second voltage tester terminal T2 that connects the described first voltage tester terminal T1, the identification diode D1 that connects the first voltage tester terminal T1 in the described power brick type identification monomer.
2. battery identification device as claimed in claim 1 is characterized in that, described processor of single chip computer MCU also stores a power brick type definition table.
3. method that is used to discern battery types, step comprises:
Power brick type identification monomer is connected with the analog to digital conversion interface of processor of single chip computer MCU by voltage tester terminal T, and described voltage tester terminal T quantity has two, is respectively the first voltage tester terminal T1 and the second voltage tester terminal T2; Comprise the first negative coefficient thermistor NTC1, the second negative coefficient thermistor NTC2 that connects the second voltage tester terminal 2 that connects the described first voltage tester terminal T1, the identification diode D1 that connects the first voltage tester terminal T1 in the described power brick type identification monomer; Described processor of single chip computer MCU stores a power brick type definition table;
It is high-impedance state that processor of single chip computer MCU port Po is set, and the magnitude of voltage of measuring the first voltage tester terminal T1 is V
_ T1, processor of single chip computer MCU port Po output high level is set again, the magnitude of voltage of measuring the first voltage tester terminal T1 is V
_ T1 ', relatively change in voltage is worth Δ V before and after the first voltage tester terminal T1
_ T1
With the described front and back voltage change Δ V that measures
_ T1Compare with the battery types definition list among the processor of single chip computer MCU, thus identification power brick type.
4. identification battery types method as claimed in claim 3 is characterized in that, described port Po set condition comprises high-impedance state and high level.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100303761A CN101354431B (en) | 2008-08-26 | 2008-08-26 | Apparatus and method for recognizing battery types |
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| CN2008100303761A CN101354431B (en) | 2008-08-26 | 2008-08-26 | Apparatus and method for recognizing battery types |
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| CN101354431A CN101354431A (en) | 2009-01-28 |
| CN101354431B true CN101354431B (en) | 2011-06-08 |
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| CN2008100303761A Expired - Fee Related CN101354431B (en) | 2008-08-26 | 2008-08-26 | Apparatus and method for recognizing battery types |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175906A (en) * | 2010-12-31 | 2011-09-07 | 崧顺电子（深圳）有限公司 | Voltage detection method and charging device using same |
| JP2013170917A (en) * | 2012-02-21 | 2013-09-02 | Nidec-Read Corp | Method for determining terminal of electronic component embedded in substrate, and terminal determination device |
| JP6136123B2 (en) | 2012-06-11 | 2017-05-31 | カシオ計算機株式会社 | Battery discrimination method, battery discrimination device, and electronic device |
| CN103675689A (en) * | 2012-09-24 | 2014-03-26 | 联想(北京)有限公司 | Battery detection method and device |
| CN103078363A (en) * | 2012-12-13 | 2013-05-01 | 广东欧珀移动通信有限公司 | Battery cell identification circuit and identification method thereof |
| CN103076920A (en) * | 2013-01-05 | 2013-05-01 | 广东欧珀移动通信有限公司 | Touch panel equipment and mobile terminal |
| CN105553060A (en) * | 2016-01-22 | 2016-05-04 | 中达电通股份有限公司 | Charging system and charging method of electrically driven vehicle |
| CN105676145A (en) * | 2016-04-01 | 2016-06-15 | 福建联迪商用设备有限公司 | Method and device for detecting temperature and ID of battery |
| CN106787040A (en) * | 2016-12-05 | 2017-05-31 | 深圳市泰昂能源科技股份有限公司 | DC power system |
| CN108254697B (en) * | 2018-01-10 | 2020-07-21 | 上海展扬通信技术有限公司 | Battery type detection method, detection terminal and storage medium |
| CN113270649B (en) * | 2020-02-17 | 2024-01-30 | 丰田自动车株式会社 | Battery control device, battery control method, storage medium, and vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222262A (en) * | 1996-06-12 | 1999-07-07 | 艾利森公司 | Appts. and method for identifying and charging batteries of different types |
| CN1832248A (en) * | 2005-03-07 | 2006-09-13 | 美国凹凸微系有限公司 | Battery pack current monitoring |
-
2008
- 2008-08-26 CN CN2008100303761A patent/CN101354431B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222262A (en) * | 1996-06-12 | 1999-07-07 | 艾利森公司 | Appts. and method for identifying and charging batteries of different types |
| CN1832248A (en) * | 2005-03-07 | 2006-09-13 | 美国凹凸微系有限公司 | Battery pack current monitoring |
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Inventor after: Guan Jinfeng Inventor after: Yu Demao Inventor after: Fan Jiguang Inventor after: Xia Jungang Inventor before: Guan Jinfeng Inventor before: Yu Demao Inventor before: Fan Jiguang |
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Effective date of registration: 20160907 Address after: 425000 Industrial Road, Hexi Industrial Zone, Lingling Industrial Zone, Lingling District, Yongzhou, Hunan Patentee after: Hunan tech-power Technology Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Baoan District Fuyong Whitehead Longwangmiao Industrial Zone sixteenth, 3, 4 Patentee before: Songshun Electronic (Shenzhen) Co., Ltd. |
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Granted publication date: 20110608 Termination date: 20180826 |