CN207623493U - A kind of battery voltage sampling integrated circuit - Google Patents
A kind of battery voltage sampling integrated circuit Download PDFInfo
- Publication number
- CN207623493U CN207623493U CN201721913350.2U CN201721913350U CN207623493U CN 207623493 U CN207623493 U CN 207623493U CN 201721913350 U CN201721913350 U CN 201721913350U CN 207623493 U CN207623493 U CN 207623493U
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- resistance
- resistor
- capacitance
- integrated circuit
- battery voltage
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Abstract
The utility model discloses a kind of battery voltage sampling integrated circuits, including first resistor, zener diode, the first capacitance, divider resistance unit, voltage sample chip, the utility model battery voltage sampling integrated circuit, it is possible to prevente effectively from the voltage of moment damages sampling integrated circuit, it is simple and practical, at low cost to have circuit, securely and reliably, detects the advantages that accurate sensitive.
Description
Technical field
The utility model is related to voltage sample technologies, and in particular to battery voltage sampling integrated circuit.
Background technology
With the development of technology, more and more circuits all make integrated circuit use, facilitate the unification of design and application
Property and generalization, wherein voltage sampling circuit also form integrated circuit however, voltage sample chip its input terminal used
Need pressure value it is relatively low, and the pressure voltage of itself can not arrive and do height, and when having more than system, instantaneous pressure occur defeated
Fashionable, it is easy to appear excessive pressure damages for voltage sample chip, while in order to further protect sampling A/D chip, need it is higher at
This, and circuit is more complicated.
Invention content
The purpose of the utility model is to overcome prior art problems, propose a kind of battery voltage sampling integrated circuit, tool
Body scheme is as follows：
The utility model provides a kind of battery voltage sampling integrated circuit, including first resistor, zener diode, first
Capacitance, divider resistance unit, voltage sample chip；
The cathode of the zener diode is connected to the positive terminal of battery, and the anode of the zener diode is connected to
The cathode of the anode of one capacitance, first capacitance is connected to the negative terminal of battery, and the first of the divider resistance unit is defeated
Enter end and the second input terminal is respectively connected to the both ends of the first capacitance, the output end of the divider resistance unit is connected to voltage sample
Chip；
The divider resistance unit obtains the voltage at the first capacitance both ends by way of electric resistance partial pressure；
The first resistor is thermistor, has the PTC thermistor of temperature sensitivity, the PTC thermistor
Resistance value increases with the raising of the temperature of PTC thermistor in phase step type.
In one embodiment, it is preferred that the divider resistance unit is in series by second resistance and 3rd resistor；
First input end of the one end of the second resistance as the divider resistance unit, the second resistance it is another
End is connected with one end of the 3rd resistor；
Second input terminal of the other end of the 3rd resistor as the divider resistance unit；
The tie point of the second resistance and 3rd resistor is the output end of the divider resistance unit；
The first input end and the second input terminal of the divider resistance unit are connected in parallel to the first capacitance both ends.
Wherein, it should be noted that the second resistance is single resistance or is made of multiple resistance connection in series-parallel；It is described
3rd resistor is single resistance or is made of multiple resistance connection in series-parallel.
In the present invention, further, the battery voltage sampling integrated circuit further includes the second capacitance, and described
One end of two capacitances is connected to the input terminal of voltage sample chip, and the other end of second capacitance is connected to the negative pole end of battery
Son.
In the present invention, in another embodiment, the divider resistance unit includes by second resistance and third electricity
Hinder the first branch in series and by the 4th resistance and the 5th resistance the second branch in series；
The second branch is connected in parallel on the both ends of 3rd resistor, and one end of the second resistance is as the divider resistance list
The first input end of member, the other end of the second resistance are connected with one end of the 3rd resistor, the third electricity
Second input terminal of the other end of resistance as the divider resistance unit；
The tie point of 4th resistance and the 5th resistance is connected to voltage as the output end of the divider resistance unit
Sampling A/D chip.
Further, the battery voltage sampling integrated circuit further includes the second capacitance, and one end of second capacitance connects
It is connected to the input terminal of voltage sample chip, the other end of second capacitance is connected to the negative terminal of battery.
Wherein, it should be noted that the second resistance is single resistance or is made of multiple resistance connection in series-parallel；It is described
3rd resistor is single resistance or is made of multiple resistance connection in series-parallel；4th resistance is for single resistance or by multiple electricity
Connection in series-parallel is hindered to constitute；5th resistance is single resistance or is made of multiple resistance connection in series-parallel.
The battery voltage sampling integrated circuit of the utility model, by first resistor, when there is high-voltage pulse production at battery both ends
When raw, especially battery is inserted into the moment of charger, will produce pulse, and the electric current moment for flowing through first resistor increases, the first electricity
Resistance generates fever and its resistance value is automatically increased, to limit the reduction of electric current, to play protection battery voltage sampling chip
Purpose.The utility model integrated chip voltage sampling circuit, it is simple and practical, at low cost to have a circuit, while safe and reliable, detection
The advantages that accurate sensitive.
Description of the drawings
Attached drawing described herein is used for providing further understanding invention, constitutes the part of the utility model, this
The illustrative embodiments and their description of utility model do not constitute the improper limit to the utility model for explaining the utility model
It is fixed.In the accompanying drawings：
Fig. 1 is the principle schematic of the battery voltage sampling integrated circuit of the utility model embodiment 1；
Fig. 2 is the principle schematic of the battery voltage sampling integrated circuit of the utility model embodiment 2.
Specific implementation mode
In order to keep technical problem to be solved in the utility model, technical solution and advantageous effect clearer, clear, with
Under in conjunction with the accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
Example is applied only to explain the utility model, is not used to limit the utility model.
Embodiment 1
The utility model embodiment 1 provides a kind of battery voltage sampling integrated circuit, as shown in Fig. 1, the battery
Voltage sample integrated circuit includes first resistor R1, zener diode DZ1, the first capacitance C1, divider resistance unit 21, electricity
Press sampling A/D chip 3；
The cathode of the zener diode DZ1 is connected to the positive terminal BAT+ of battery, the sun of the zener diode DZ1
Pole is connected to the anode of the first capacitance C1, and the cathode of the first capacitance C1 is connected to the negative terminal BAT- of battery 1, described point
The first input end of piezoresistance unit 21 and the second input terminal are respectively connected to the both ends of the first capacitance C1；The divider resistance unit
It is connected to voltage sample chip 3 after 21 output end connection first resistor R1；
The divider resistance unit 21 obtains the voltage at the first both ends capacitance C1 by way of electric resistance partial pressure；
The first resistor R1 is thermistor, the PTC thermistor with temperature sensitivity, the PTC thermistor
Resistance value increase in phase step type with the raising of the temperature of PTC thermistor.
In the present embodiment, it is preferred that the divider resistance unit 21 is by second resistance R2 and 3rd resistor R3 series connection structures
At；
First input end of the one end of the second resistance R2 as the divider resistance unit 21, the second resistance R2
The other end be connected with one end of the 3rd resistor R3；
Second input terminal of the other end of the 3rd resistor R3 as the divider resistance unit 21；
The tie point of the second resistance R2 and 3rd resistor R3 is the output end of the divider resistance unit 21；
The first input end and the second input terminal of the divider resistance unit 21 are connected in parallel to the first capacitance both ends.
It should be noted that in the utility model, the second resistance R2 be single resistance or by multiple resistance strings simultaneously
Connection is constituted；
It should be noted that in the utility model, the 3rd resistor R3 be single resistance or by multiple resistance strings simultaneously
Connection is constituted.
Further, the battery voltage sampling integrated circuit further includes the second capacitance C2, and the one of the second capacitance C2
End is connected to the input terminal of voltage sample chip 3, and the other end of the second capacitance C2 is connected to the negative terminal of battery 1
BAT- improves the accurate of sampled signal wherein the second capacitance C2 can be effectively filtered to being input to voltage sample chip 3
Property.
In the present invention, UBAT=UDZ1+UC1, wherein UBATFor battery both end voltage, UDZ1For zener diode both ends
Voltage, UC1For the first capacitance both end voltage, UIt adopts=UC1R3/ (R2+R3), UIt adoptsFor sampled voltage.
Embodiment 2
The utility model embodiment 2 provides a kind of battery voltage sampling integrated circuit, as shown in Fig. 2, the battery
Voltage sample integrated circuit include first resistor R1, zener diode DZ1, the first capacitance C1, divider resistance unit 21,
22, voltage sample chip 3；
The cathode of the zener diode DZ1 is connected to the positive terminal BAT+ of battery 1, the zener diode DZ1's
Anode is connected to the anode of the first capacitance C1, and the cathode of the first capacitance C1 is connected to the negative terminal BAT- of battery 1, described
The first input end of divider resistance unit 21 and the second input terminal are respectively connected to the both ends of the first capacitance C1, the divider resistance list
The output end of member is connected to voltage sample chip 3；
The first resistor R1 is thermistor, the PTC thermistor with temperature sensitivity, the PTC thermistor
Resistance value increase in phase step type with the raising of the temperature of PTC thermistor.
In the present embodiment, it is preferred that the divider resistance unit includes by second resistance R2 and 3rd resistor R3 series connection
The first branch 21 of composition and by the second branch 22 the 4th resistance R4 and the 5th resistance R5 in series；
The first branch 21 of the divider resistance unit is used to obtain the partial pressure at the first both ends capacitance C1；
The second branch 22 is connected in parallel on the both ends of 3rd resistor R3, and one end of the second resistance R2 is as the partial pressure
The first input end of resistance unit, the other end of the second resistance R2 is connected with one end of the 3rd resistor R3, described
Second input terminal of the other end of the 3rd resistor R3 as the divider resistance unit；
The tie point of the 4th resistance R4 and the 5th resistance R5 is connected to as the output end of the divider resistance unit
Voltage sample chip.
Further, the battery voltage sampling integrated circuit further includes the second capacitance C2, and the one of the second capacitance C2
End is connected to the input terminal of voltage sample chip 3, and the other end of the second capacitance C2 is connected to the negative terminal of battery 1
BAT- improves the accurate of sampled signal wherein the second capacitance C2 can be effectively filtered to being input to voltage sample chip 3
Property.
It should be noted that in the utility model, the second resistance R2 be single resistance or by multiple resistance strings simultaneously
Connection is constituted；
It should be noted that in the utility model, the 3rd resistor R3 be single resistance or by multiple resistance strings simultaneously
Connection is constituted.
It should be noted that in the utility model, the 4th resistance R4 be single resistance or by multiple resistance strings simultaneously
Connection is constituted；
It should be noted that in the utility model, the 5th resistance R5 be single resistance or by multiple resistance strings simultaneously
Connection is constituted.
In the present invention, UBAT=UDZ1+UC1, wherein UBATFor battery both end voltage, UDZ1For zener diode both ends
Voltage, UC1For the first capacitance both end voltage, UIt adopts=UC1R3R5/ [(R2+R3) (R4+R5)], UIt adoptsFor sampled voltage.
Description above describe the preferred embodiments of the utility model, it is to be understood that the utility model is not limited to
Embodiment is stated, and excluding other embodiments should not be regarded as.By the enlightenment of the utility model, those skilled in the art combine
The change that the known or prior art, knowledge are carried out also should be regarded as within the protection scope of the present utility model.
Claims (7)
1. a kind of battery voltage sampling integrated circuit, which is characterized in that
Including first resistor, zener diode, the first capacitance, divider resistance unit, voltage sample chip；
The cathode of the zener diode is connected to the positive terminal of battery, and the anode of the zener diode is connected to the first electricity
The cathode of the anode of appearance, first capacitance is connected to the negative terminal of battery, the first input end of the divider resistance unit
It is respectively connected to the both ends of the first capacitance, connect after the output end connection first resistor of the divider resistance unit with the second input terminal
To voltage sample chip；
The divider resistance unit obtains the voltage at the first capacitance both ends by way of electric resistance partial pressure；
The first resistor is thermistor, the PTC thermistor with temperature sensitivity, the resistance value of the PTC thermistor
Raising with the temperature of PTC thermistor is increased in phase step type.
2. battery voltage sampling integrated circuit according to claim 1, which is characterized in that
The divider resistance unit is in series by second resistance and 3rd resistor；
First input end of the one end of the second resistance as the divider resistance unit, the other end of the second resistance with
One end of the 3rd resistor is connected；
Second input terminal of the other end of the 3rd resistor as the divider resistance unit；
The tie point of the second resistance and 3rd resistor is the output end of the divider resistance unit；
The first input end and the second input terminal of the divider resistance unit are connected in parallel to the first capacitance both ends.
3. battery voltage sampling integrated circuit according to claim 2, which is characterized in that
The second resistance is single resistance or is made of multiple resistance connection in series-parallel；
The 3rd resistor is single resistance or is made of multiple resistance connection in series-parallel.
4. battery voltage sampling integrated circuit according to claim 1, which is characterized in that
The battery voltage sampling integrated circuit further includes the second capacitance, and one end of second capacitance is connected to voltage sample core
The other end of the input terminal of piece, second capacitance is connected to the negative terminal of battery.
5. battery voltage sampling integrated circuit according to claim 1, which is characterized in that
The divider resistance unit includes by second resistance and the 3rd resistor first branch in series and by the 4th resistance
The second branch in series with the 5th resistance；
The second branch is connected in parallel on the both ends of 3rd resistor, and one end of the second resistance is as the divider resistance unit
First input end, the other end of the second resistance are connected with one end of the 3rd resistor, the 3rd resistor it is another
Hold the second input terminal as the divider resistance unit；
The tie point of 4th resistance and the 5th resistance is connected to voltage sample as the output end of the divider resistance unit
Chip.
6. battery voltage sampling integrated circuit according to claim 5, which is characterized in that
The battery voltage sampling integrated circuit further includes the second capacitance, and one end of second capacitance is connected to voltage sample core
The other end of the input terminal of piece, second capacitance is connected to the negative terminal of battery.
7. battery voltage sampling integrated circuit according to claim 5, which is characterized in that
The second resistance is single resistance or is made of multiple resistance connection in series-parallel；
The 3rd resistor is single resistance or is made of multiple resistance connection in series-parallel；
4th resistance is single resistance or is made of multiple resistance connection in series-parallel；
5th resistance is single resistance or is made of multiple resistance connection in series-parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721913350.2U CN207623493U (en) | 2017-12-30 | 2017-12-30 | A kind of battery voltage sampling integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721913350.2U CN207623493U (en) | 2017-12-30 | 2017-12-30 | A kind of battery voltage sampling integrated circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207623493U true CN207623493U (en) | 2018-07-17 |
Family
ID=62830892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721913350.2U Expired - Fee Related CN207623493U (en) | 2017-12-30 | 2017-12-30 | A kind of battery voltage sampling integrated circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN207623493U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085508A (en) * | 2018-08-30 | 2018-12-25 | 深圳市道通智能航空技术有限公司 | Determine method, apparatus, chip, battery and the aircraft of the charged state of battery |
-
2017
- 2017-12-30 CN CN201721913350.2U patent/CN207623493U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085508A (en) * | 2018-08-30 | 2018-12-25 | 深圳市道通智能航空技术有限公司 | Determine method, apparatus, chip, battery and the aircraft of the charged state of battery |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180717 Termination date: 20191230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |