CN201477197U - Automatic battery capacity detector - Google Patents

Automatic battery capacity detector Download PDF

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Publication number
CN201477197U
CN201477197U CN2009203040378U CN200920304037U CN201477197U CN 201477197 U CN201477197 U CN 201477197U CN 2009203040378 U CN2009203040378 U CN 2009203040378U CN 200920304037 U CN200920304037 U CN 200920304037U CN 201477197 U CN201477197 U CN 201477197U
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CN
China
Prior art keywords
triode
connects
resistance
battery
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009203040378U
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Chinese (zh)
Inventor
任洪兵
尹勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Changhong Electric Co Ltd
Original Assignee
Sichuan Changhong Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to CN2009203040378U priority Critical patent/CN201477197U/en
Application granted granted Critical
Publication of CN201477197U publication Critical patent/CN201477197U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to the automatic detection technique, in particular to an automatic battery capacity detector, which is used for detecting whether actual battery capacity accords with marked capacity or not. The essential points of the technical scheme include that the automatic battery capacity detector comprises an interlocking switch circuit, a discharge circuit and a computing display circuit, wherein the interlocking switch circuit is connected with the discharge circuit, and the discharge circuit is connected with the computing display circuit. The automatic battery capacity detector can detect battery capacity to judge quality of batteries and is adaptable to detection of battery capacity.

Description

The battery capacity automatic detection device
Technical field
The utility model relates to Automatic Measurement Technique, relates in particular to a kind of battery capacity automatic detection device.
Background technology
Current, the battery of various models is more and more, the battery that battery user is used also has many types (for example battery of mobile phone), the quality of these batteries is also uneven, after the new battery of buying uses a period of time, battery shortens service time, is the problem or the electrical appliance problem of battery on earth, and the user can not its quality of intuitive judgment to battery.Therefore need a kind of device that can detect battery capacity automatically, whether conform to the mark capacity, also do not have this device to occur in the market to detect the battery actual capacity.
The utility model content
Whether technical problem to be solved in the utility model is: propose a kind of battery capacity automatic detection device, detect the battery actual capacity and conform to the mark capacity.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the battery capacity automatic detection device, comprise interlock switch circuit, discharge circuit and calculate display circuit, described interlock switch circuit connects discharge circuit, and discharge circuit connects the calculating display circuit.
Further, also comprise milliammeter, described milliammeter one end connects tested anode, and the other end connects the interlock switch circuit.
Described interlock switch circuit comprises switch, first resistance, second resistance, the 3rd resistance, the 4th resistance, first triode, second triode; Described first triode is the NPN pipe, and second triode is the PNP pipe; Described second resistance is connected between the base stage and emitter of first triode; Described first resistance, one end connects the base stage of first triode, and the other end connects the emitter of second triode by switch; Described the 3rd resistance connects the base stage of the collector and second triode of first triode; Described the 4th resistance is connected between the collector of the base stage of first triode and second triode; The emitter of described first triode connects the negative pole of tested battery; The emitter of described second triode connects the positive pole of tested battery by milliammeter.
Described discharge circuit comprises the 5th resistance, light emitting diode, electric capacity and the 3rd triode; Described the 5th resistance one end connects the collector of second triode, and the other end connects the anode of light emitting diode; Described the 3rd triode is the NPN pipe, and its collector connects the emitter of second triode, and its emitter connects the calculating display circuit; Described electric capacity one end connects the base stage of the 3rd triode, and the other end connects the negative pole of tested battery; The negative electrode of described light emitting diode connects the negative pole of tested battery.
Described calculating display circuit comprises N two-way toggle switch, a N resistance, microprocessor, display device; Described N two-way toggle switch connects one to one in the negative pole of tested battery by N resistance, and N two-way toggle switch also connects microprocessor; The end that the 4th resistance is connected with first transistor base also connects microprocessor; Microprocessor connects display device, N 〉=1, and be positive integer.
Described microprocessor is that single-chip microcomputer, described display device are charactron.
The beneficial effects of the utility model are: can realize the detection to battery capacity, to distinguish the quality of battery.
Description of drawings
Fig. 1 is the circuit diagram of embodiment.
Among the figure, K1, K2, K3 are the two-way toggle switch, and R6, R7, R8 are resistance, and SW is a switch, and LED1 is a light emitting diode, and C1 is an electric capacity.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Whether the utility model conforms to the mark capacity at the actual capacity that can't distinguish battery in the market and a kind of battery capacity automatic detection device of proposing, it comprises the battery capacity automatic detection device, comprise interlock switch circuit, discharge circuit and calculate display circuit, described interlock switch circuit connects discharge circuit, and discharge circuit connects the calculating display circuit.
Embodiment:
As shown in Figure 1, battery capacity automatic detection device in this example comprises interlock switch circuit, discharge circuit and calculates display circuit that the interlock switch circuit comprises switch SW, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the first triode T1, the second triode T2; The described first triode T1 is the NPN pipe, and the second triode T2 is the PNP pipe; Described second resistance R 2 is connected between the base stage and emitter of the first triode T1; Described first resistance R, 1 one ends connect the base stage of the first triode T1, and the other end connects the emitter of the second triode T2 by switch; Described the 3rd resistance R 3 connects the collector of the first triode T1 and the base stage of the second triode T2; Described the 4th resistance R 4 is connected between the collector of the base stage of the first triode T1 and the second triode T2; The emitter of the described first triode T1 connects the negative pole of tested battery; The emitter of the described second triode T2 connects the positive pole of tested battery by milliammeter.Discharge circuit comprises the 5th resistance R 5, LED 1, capacitor C 1 and the 3rd triode T3; Described the 5th resistance R 5 one ends connect the collector of the second triode T2, and the other end connects the anode of LED 1; Described the 3rd triode T3 is the NPN pipe, and its collector connects the emitter of the second triode T2, and its emitter connects the calculating display circuit; Described capacitor C 1 one ends connect the base stage of the 3rd triode T3, and the other end connects the negative pole of tested battery; The negative electrode of described LED 1 connects the negative pole of tested battery.Calculate display circuit and comprise 3 two-way toggle switches (K1, K2, K3), 3 resistance (R6, R7, R8), microprocessor, display device; Microprocessor adopts single-chip microcomputer, display device to adopt charactron, and reducing cost, K1 is leaded up to R6 and connected tested battery cathode, and another road connects single-chip microcomputer; K2 is leaded up to R7 and is connected tested battery cathode, and another road connects single-chip microcomputer; K3 is leaded up to R8 and is connected tested battery cathode, and another road connects single-chip microcomputer; The 4th resistance R 4 also connects single-chip microcomputer with the end that the first triode T1 base stage is connected; Single-chip microcomputer is connected with charactron.
This routine principle of work is: by the control of discharge, calculate tested battery actual capacity by single-chip microcomputer when adopting the interlock switch circuit to realize that tested cell voltage is lower than minimum operating voltage.Concrete is: at the interlock switch circuit part: after pressing switch SW, the electric current of tested battery forms loops by milliammeter, first resistance R 1, second resistance R 2; The A point voltage is two electric resistance partial pressures and getting thus; After the A point voltage rose, the first triode T1 base voltage also rose, conducting then, and the base voltage of the second triode T2 that the collector pole tension decline of the first triode T1 makes also descends; The second triode T2 conducting, its current collection extreme pressure feeds back by the 4th resistance R 4, makes the triode T1 base voltage of winning constant, allows the first triode T1 and the second triode T2 keep conducting, forms interlocking loop; The release voltage of interlock switch (minimum operating voltage) is by second resistance R 2, the decision of the 4th resistance R 4 dividing potential drops, and reometer plays supervisory function bit in this example.
In the discharge circuit part: utilize LED 1 to make voltage stabilizing double as power light, to realize constant-current discharge, its discharge current is: the pull-up resistor resistance that (LED1 voltage-T3 emitter junction voltage)/the T3 emitter is connect.As can be seen, discharge current is determined by pull-up resistor (R6, R7, R8).Capacitor C 1 plays filter action, and the 5th resistance R 5 is a pull-up resistor.
Calculating the display circuit part: be provided with three two-way toggle switches and three resistance, so just formed three different measurement gears.For example be followed successively by 1000mAh, 2000mAh, 3000mAh, value for pull-up resistor R6 can realize so so: the standard by national 0.2C (battery capacity) is calculated constant discharge current, should be I standard=0.2C=0.2*1000mAh=200mA for its standard discharge circuit of battery of 1000mAh capacity so.According to the pull-up resistor resistance (this time being the resistance of R6) that discharge current=(LED1 voltage-T3 emitter junction voltage)/the T3 emitter is connect, can calculate the resistance size that R6 should select for use again, also be as said process for selecting for use of R7, R8.Desire is tested the actual capacity of tested battery, and we need earlier single-chip microcomputer to be programmed, and utilize formula: battery actual capacity=actual discharge electric current * actual discharge time can obtain the battery actual capacity.Adopt the pull-up resistor resistance that (LED1 voltage-T3 emitter junction voltage)/the T3 emitter is connect to try to achieve for the actual discharge electric current, key is exactly how to calculate the actual discharge time now: we select for use this sampling spot of A point to control timing, after SW is pressed, high on the current potential that A is ordered, the interlock switch circuit working, give lasting high level signal of single-chip microcomputer at once, single-chip microcomputer obtains making corresponding timing action behind this signal; When the voltage of tested battery drops to us and sets the release voltage of interlock switch, the interlock switch circuit quits work, the voltage that A is ordered drops to low level at once, this level is given single-chip microcomputer at once, after single-chip microcomputer obtains this signal, make corresponding timing tenth skill at once, so just can calculate the actual discharge time, again according to formula: battery actual capacity=actual discharge electric current * actual discharge time, just can calculate the battery actual capacity, and on charactron, demonstrate net result, whether consistent so that the user can tell the actual capacity of this tested battery with the mark capacity.
For the setting of toggle switch and pull-up resistor, greater number can also be set, so just can there be more gear to be convenient to select, for example 800mAh, 1200mAh or the like can also be set.The user is when selecting gear, and each measurement can only be selected a gear, otherwise miscue will appear in single-chip microcomputer, and shows on charactron, for the customer inspection adjustment.

Claims (6)

1. the battery capacity automatic detection device is characterized in that: comprise interlock switch circuit, discharge circuit and calculate display circuit, described interlock switch circuit connection discharge circuit, discharge circuit connection calculating display circuit.
2. battery capacity automatic detection device as claimed in claim 1 is characterized in that: also comprise milliammeter, described milliammeter one end connects tested anode, and the other end connects the interlock switch circuit.
3. battery capacity automatic detection device as claimed in claim 2 is characterized in that: described interlock switch circuit comprises switch, first resistance, second resistance, the 3rd resistance, the 4th resistance, first triode, second triode; Described first triode is the NPN pipe, and second triode is the PNP pipe; Described second resistance is connected between the base stage and emitter of first triode; Described first resistance, one end connects the base stage of first triode, and the other end connects the emitter of second triode by switch; Described the 3rd resistance connects the base stage of the collector and second triode of first triode; Described the 4th resistance is connected between the collector of the base stage of first triode and second triode; The emitter of described first triode connects the negative pole of tested battery; The emitter of described second triode connects the positive pole of tested battery by milliammeter.
4. battery capacity automatic detection device as claimed in claim 3 is characterized in that: described discharge circuit comprises the 5th resistance, light emitting diode, electric capacity and the 3rd triode; Described the 5th resistance one end connects the collector of second triode, and the other end connects the anode of light emitting diode; Described the 3rd triode is the NPN pipe, and its collector connects the emitter of second triode, and its emitter connects the calculating display circuit; Described electric capacity one end connects the base stage of the 3rd triode, and the other end connects the negative pole of tested battery; The negative electrode of described light emitting diode connects the negative pole of tested battery.
5. battery capacity automatic detection device as claimed in claim 4 is characterized in that: described calculating display circuit comprises N two-way toggle switch, a N resistance, microprocessor, display device; Described N two-way toggle switch connects one to one in the negative pole of tested battery by N resistance, and N two-way toggle switch also connects microprocessor; The end that the 4th resistance is connected with first transistor base also connects microprocessor; Microprocessor connects display device, N 〉=1, and be positive integer.
6. battery capacity automatic detection device as claimed in claim 5 is characterized in that: described microprocessor is that single-chip microcomputer, described display device are charactron.
CN2009203040378U 2009-06-05 2009-06-05 Automatic battery capacity detector Expired - Fee Related CN201477197U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102265171A (en) * 2011-05-31 2011-11-30 华为技术有限公司 Method and device for detecting configuration error of rated capacity of battery
CN102590760A (en) * 2012-02-27 2012-07-18 力帆实业(集团)股份有限公司 Storage battery state detection device and detection method thereof
CN103033766A (en) * 2013-01-15 2013-04-10 何林 Simple and convenient test circuit for lithium battery capacity
CN104678318A (en) * 2015-03-05 2015-06-03 黄宇嵩 Battery performance detector
CN106125005A (en) * 2016-08-31 2016-11-16 广东高标电子科技有限公司 A kind of battery power detection circuit, electric motor car panel and light electric vehicle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102265171A (en) * 2011-05-31 2011-11-30 华为技术有限公司 Method and device for detecting configuration error of rated capacity of battery
WO2011157139A2 (en) * 2011-05-31 2011-12-22 华为技术有限公司 Detection method and device for configuration error of battery nominal capacity
WO2011157139A3 (en) * 2011-05-31 2012-05-03 华为技术有限公司 Detection method and device for configuration error of battery nominal capacity
CN102590760A (en) * 2012-02-27 2012-07-18 力帆实业(集团)股份有限公司 Storage battery state detection device and detection method thereof
CN103033766A (en) * 2013-01-15 2013-04-10 何林 Simple and convenient test circuit for lithium battery capacity
CN104678318A (en) * 2015-03-05 2015-06-03 黄宇嵩 Battery performance detector
CN106125005A (en) * 2016-08-31 2016-11-16 广东高标电子科技有限公司 A kind of battery power detection circuit, electric motor car panel and light electric vehicle

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Sichuan Changhong Power Supply Co., Ltd.

Assignor: Sichuan Changhong Electrical Appliance Co., Ltd.

Contract record no.: 2011510000165

Denomination of utility model: Automatic battery capacity detector

Granted publication date: 20100519

License type: Exclusive License

Record date: 20110818

EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100519

Termination date: 20150605