CN102033208A - Battery detection protection chip - Google Patents
Battery detection protection chip Download PDFInfo
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- CN102033208A CN102033208A CN 201010571214 CN201010571214A CN102033208A CN 102033208 A CN102033208 A CN 102033208A CN 201010571214 CN201010571214 CN 201010571214 CN 201010571214 A CN201010571214 A CN 201010571214A CN 102033208 A CN102033208 A CN 102033208A
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- voltage
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- testing circuit
- battery detecting
- protection chip
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Abstract
The invention discloses a battery detection protection chip. A voltage-current converter is arranged in a detection circuit and converts the battery voltage of a detected battery unit into the current according to a preset ratio; and a current-voltage converter is arranged in the detection circuit and converts the current in a proportion to the battery voltage into the voltage to ground. By the conversion of a current domain, the circuit reduces the common-mode voltage of the detected battery voltage efficiency. The semiconductor chip can detect and protect all batteries in a large-scaled battery pack quickly and accurately, prolong the service life of the batteries and improve the battery performance.
Description
Technical field
The present invention relates to detection and protection chip in the electronic technology, is a kind of integrated circuit (IC) chip, specifically, is battery detecting protection chip.
Background technology
Along with the exhaustion of petroleum resources, the utilization of electric energy is an inexorable trend.In the occasion (such as electric hand tool, pure electric automobile etc.) of the high-power power supply of needs, single battery can't provide enough power usually, the electric battery that must use the multiple batteries units in series to form.With respect to the electric battery that the multiple batteries unit composes in parallel, series battery has alleviated big electric current I
2The problem of R loss.Each batteries voltage, electric current in the electric battery are detected quickly and accurately, protect, and the life-span that can prolong power brick can promote the performance of power brick power supply again.Yet each batteries detects in the process with protection in the power brick that multiple batteries is composed in series and since common mode voltage high make to detect become very difficult, hindered applying of extensive electrokinetic cell.And existing battery detecting and protection, nearly all be at this a kind of chip of lithium battery, can not be applicable to other battery types.
Summary of the invention:
The purpose of this invention is to provide a kind of battery detecting protection chip that can detect, protect each battery in the extensive power brick quickly and accurately.
Technical solution of the present invention is:
A kind of battery detecting protection chip is characterized in that: voltage current adapter is arranged in testing circuit, the cell voltage of detected battery unit is changed into electric current according to default ratio; Current-to-voltage convertor is arranged in testing circuit, change into voltage-to-ground with the proportional electric current of cell voltage above-mentioned.
Testing circuit is one can detect each the batteries voltage in a plurality of power brick, the circuit of electric current.
Voltage current adapter in the testing circuit is the converter that adopts current mirror structure.
Voltage current adapter comprises one or more series-parallel resistors.
The voltage current adapter conversion proportion determines with the resistance value of one or several resistor.
The triode that the converter inside of the current mirror structure in the testing circuit is used is double pole triode or fet.
Voltage current adapter in the testing circuit is the converter that adopts operational amplifier.
Current-to-voltage convertor in the testing circuit is the resistor of one or more series-parallel ground connection.
The conversion proportion of current-to-voltage convertor determines with the resistance value of one or several resistor.
Adopt the coupling wiring method on the chip, make the resistor of decision conversion proportion under different technological limitses, voltage, temperature and aging conditions, be complementary with the resistance of the resistor that plays the effect of electric current voltage transitions.
The present invention is by the conversion of current field, and circuit has reduced the common mode voltage of detected cell voltage effectively.This semi-conductor chip can detect, protect each battery in the extensive power brick quickly and accurately, extending battery life, lifting battery performance; Usable range of the present invention is extensive, can be used for comprising detection, the protection of the various batteries of lithium battery.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the schematic diagram for testing circuit of the present invention (adopting the voltage current adapter of current mirror structure).
Fig. 2 is the voltage current adapter synoptic diagram that adopts operational amplifier in the testing circuit.
Fig. 3 is the synoptic diagram of the current-to-voltage convertor of the employing stake resistance in the testing circuit.
Embodiment
Embodiment 1:
A kind of battery detecting protection chip has voltage current adapter in testing circuit, the cell voltage of detected battery unit is changed into electric current according to default ratio; Current-to-voltage convertor is arranged in testing circuit, change into voltage-to-ground with the proportional electric current of cell voltage above-mentioned.
Testing circuit is one can detect each the batteries voltage in a plurality of power brick, the circuit of electric current.Voltage current adapter in the testing circuit is the converter that adopts current mirror structure.Voltage current adapter comprises one or more series-parallel resistors, and the voltage current adapter conversion proportion determines with the resistance value of one or several resistor.
The triode that the converter inside of the current mirror structure in the testing circuit is used is double pole triode or fet.
The conversion proportion of current-to-voltage convertor determines with the resistance value of one or several resistor.
Adopt the coupling wiring method on the chip, make the resistor of decision conversion proportion under different technological limitses, voltage, temperature and aging conditions, be complementary with the resistance of the resistor that plays the effect of electric current voltage transitions.
Embodiment 2:
Voltage current adapter in the testing circuit is the converter that adopts operational amplifier.Current-to-voltage convertor in the testing circuit is the resistor of one or more series-parallel ground connection.All the other are with embodiment 1.
Claims (10)
1. battery detecting protection chip is characterized in that: voltage current adapter is arranged in testing circuit, the cell voltage of detected battery unit is changed into electric current according to default ratio; Current-to-voltage convertor is arranged in testing circuit, change into voltage-to-ground with the proportional electric current of cell voltage above-mentioned.
2. battery detecting protection chip according to claim 1, it is characterized in that: testing circuit is one can detect each the batteries voltage in a plurality of power brick, the circuit of electric current.
3. battery detecting protection chip according to claim 1, it is characterized in that: the voltage current adapter in the testing circuit is the converter that adopts current mirror structure.
4. battery detecting protection chip according to claim 3, it is characterized in that: voltage current adapter comprises one or more series-parallel resistors.
5. battery detecting protection chip according to claim 4, it is characterized in that: the voltage current adapter conversion proportion determines with the resistance value of one or several resistor.
6. battery detecting protection chip according to claim 3, it is characterized in that: the triode that the converter inside of the current mirror structure in the testing circuit is used is double pole triode or fet.
7. according to claim 1,2,3,4,5 or 6 described battery detecting protection chips, it is characterized in that: the voltage current adapter in the testing circuit is the converter that adopts operational amplifier.
8. according to claim 1,2,3,4,5 or 6 described battery detecting protection chips, it is characterized in that: the current-to-voltage convertor in the testing circuit is the resistor of one or more series-parallel ground connection.
9. battery detecting protection chip according to claim 6, it is characterized in that: the conversion proportion of current-to-voltage convertor determines with the resistance value of one or several resistor.
10. battery detecting protection chip according to claim 7; it is characterized in that: adopt the coupling wiring method on the chip, make the resistor of decision conversion proportion under different technological limitses, voltage, temperature and aging conditions, be complementary with the resistance of the resistor that plays the effect of electric current voltage transitions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010571214 CN102033208A (en) | 2010-12-03 | 2010-12-03 | Battery detection protection chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010571214 CN102033208A (en) | 2010-12-03 | 2010-12-03 | Battery detection protection chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102033208A true CN102033208A (en) | 2011-04-27 |
Family
ID=43886359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010571214 Pending CN102033208A (en) | 2010-12-03 | 2010-12-03 | Battery detection protection chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102033208A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105243826A (en) * | 2015-11-02 | 2016-01-13 | 唐智科技湖南发展有限公司 | Current transmission signal sensitivity regulation and intermittent current transmission method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2554813Y (en) * | 2002-06-21 | 2003-06-04 | 骏泰阳软件科技（深圳）有限公司 | Series battery monitoring protective module |
-
2010
- 2010-12-03 CN CN 201010571214 patent/CN102033208A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2554813Y (en) * | 2002-06-21 | 2003-06-04 | 骏泰阳软件科技（深圳）有限公司 | Series battery monitoring protective module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105243826A (en) * | 2015-11-02 | 2016-01-13 | 唐智科技湖南发展有限公司 | Current transmission signal sensitivity regulation and intermittent current transmission method |
| CN105243826B (en) * | 2015-11-02 | 2019-04-26 | 唐智科技湖南发展有限公司 | A kind of adjustment of sensitivity and intermittent current transmission method of current transmission signal |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110427 |