CN201740857U - Battery detection circuit - Google Patents
Battery detection circuit Download PDFInfo
- Publication number
- CN201740857U CN201740857U CN2010201548650U CN201020154865U CN201740857U CN 201740857 U CN201740857 U CN 201740857U CN 2010201548650 U CN2010201548650 U CN 2010201548650U CN 201020154865 U CN201020154865 U CN 201020154865U CN 201740857 U CN201740857 U CN 201740857U
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- CN
- China
- Prior art keywords
- resistance
- circuit
- diode
- bleeder circuit
- battery detection
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- Expired - Fee Related
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a battery detection circuit which comprises a comparator, wherein the inverted-phase input end of the comparator is connected with a first voltage-dividing circuit, the same-phase input end thereof is connected with a second voltage-dividing circuit, one ends of the first voltage-dividing circuit and the second voltage-dividing circuit are grounded, the other end of the first voltage-dividing circuit is connected with the cathode of a diode, and the other end of the second voltage-dividing circuit is connected with resistors connected with two ends of the diode in parallel. Therefore, the battery detection circuit can detect whether a battery is connected in a circuit. Compared with the prior art, the battery detection circuit has simple structure and low production cost.
Description
Technical field
The utility model relates to a kind of battery detection circuit.
Background technology
Existing testing circuit mainly uses scm software to realize electric circuit inspection.Existing control circuit complexity, the production cost height, circuit can produce electromagnetic interference (EMI).
The utility model content
The technical matters that the utility model mainly solves provides a kind of battery detection circuit, and its circuit structure is simple, and production generates low.
In order to address the above problem, the utility model provides a kind of battery detection circuit, this battery detection circuit comprises comparer, the inverting input of this comparer is connected with first bleeder circuit, its in-phase input end is connected with second bleeder circuit, an end ground connection of described first bleeder circuit and second bleeder circuit, and the first bleeder circuit other end is connected with the negative electrode of diode, the second bleeder circuit other end be connected in parallel on diode two ends resistance and be connected, wherein two resistance series connection backs are in parallel with diode.
Preferably, described first bleeder circuit comprises two resistance that are connected between diode cathode and the ground, and the inverting input of described comparer is connected between two resistance.
Preferably, described second bleeder circuit comprises two resistance of series connection, a resistance eutral grounding wherein, and another resistance is connected with the resistance that is located at the diode two ends, and the in-phase input end of described comparer is connected between two resistance of series connection.
The utility model battery detection circuit, inverting input by comparer is connected with first bleeder circuit, its in-phase input end is connected with second bleeder circuit, one end ground connection of described first bleeder circuit and second bleeder circuit, the first bleeder circuit other end is connected with the negative electrode of diode, the second bleeder circuit other end be connected in parallel on diode two ends resistance and be connected, wherein two resistance series connection backs are in parallel with diode.Realization to battery whether the state of place in circuit detect.Compared with prior art, it is simple in structure, and production cost is low.
Description of drawings
Fig. 1 is the utility model battery detection circuit embodiment schematic diagram.
Below in conjunction with embodiment, and with reference to accompanying drawing, realization, functional characteristics and the advantage of the utility model purpose is described further.
Embodiment
As shown in Figure 1, the utility model provides a kind of battery detection circuit embodiment.
Described battery detection circuit comprises comparer U1, the inverting input of this comparer U1 is connected with first bleeder circuit of being made up of resistance R 3 and resistance R 5, its in-phase input end is connected with second bleeder circuit of being made up of resistance R 4 and resistance R 6, the resistance R 5 of described first bleeder circuit and the resistance R of second bleeder circuit 6 one end ground connection, the resistance R 3 of the first bleeder circuit other end is connected with the negative electrode of diode D1, the resistance R 4 of the second bleeder circuit other end be connected in parallel on diode D1 two ends resistance R 1, R2 connects, wherein two resistance R 1, R2 series connection back is in parallel with diode.
Specifically, the inverting input of described comparer U1, promptly the pin two of comparer U1 is connected with the first component volt circuit of being made up of resistance R 3 and resistance R 5, and promptly the pin two of comparer U1 is connected between two resistance R 3 and the resistance R 5; Its in-phase input end, the pin 3 that is comparer U1 is connected with second bleeder circuit of being made up of resistance R 4 and resistance R 6, a resistance R 6 ground connection wherein, another resistance R 4 is connected with R2 with the resistance R 1 that is located at diode D1 two ends, and the in-phase input end of described comparer U1 is connected between resistance R 4 and the resistance R 6; Wherein said resistance R 5 and resistance R 6 ground connection, resistance R 3 is connected with the negative electrode of diode D1, described resistance R 4 is connected with resistance R 2 with the resistance R 1 that is connected in parallel on diode D1 two ends, wherein two resistance R 1, R2 connect back in parallel with diode, the negative electrode of this diode D1 is connected with battery, and its anode is connected with the voltage input.Described comparer U1 output terminal, the i.e. pin one of comparer U1, output detection signal give back level detection control circuit as detecting the steering order input signal.
Understand this circuit for convenience, further specify its course of work.
When battery detection circuit does not connect battery, the pin two voltage of described comparer U1 inverting input is higher than the voltage of in-phase input end pin 3, the output terminal pin one pin output low level of this comparer U1, low level detect for late-class circuit determines that battery does not insert testing circuit.When battery detection circuit inserts battery, to there be electric current to flow through diode D1, this diode D1 produces tube voltage drop, its cathode voltage will descend, because the voltage of pin 3 pin of the in-phase input end of comparer U1 carries out dividing potential drop by resistance R 4 in the second component volt circuit and resistance R 6, this resistance R 4 is connected on resistance R 1 and the resistance R 2 intermediate section pressure points, each ohmic drop is half of diode D1 tube voltage drop on resistance R 1 and the resistance R 2, after diode D1 cathode voltage descends, voltage drop-out value on resistance R 1 and the resistance R 2 intermediate section pressure points is half of diode D1 cathode voltage drop-out value, voltage drop-out value on the diode D1 negative electrode powers on greater than resistance R 1 and resistance R 2 intermediate section pressure points and depresses depreciation, the pin two voltage of comparer U1 inverting input is lower than the pin 3 in-phase input end voltages of in-phase input end, this moment is than defeated device U1 output terminal pin one output high level, high level detects for late-class circuit and has connected battery for circuit, thus realization to battery whether the state of place in circuit detect.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (3)
1. battery detection circuit is characterized in that:
This battery detection circuit comprises comparer, the inverting input of this comparer is connected with first bleeder circuit, its in-phase input end is connected with second bleeder circuit, one end ground connection of described first bleeder circuit and second bleeder circuit, the first bleeder circuit other end is connected with the negative electrode of diode, the second bleeder circuit other end be connected in parallel on diode two ends resistance and be connected, wherein two resistance series connection backs are in parallel with diode.
2. according to the described battery detection circuit of claim 1, it is characterized in that:
Described first bleeder circuit comprises two resistance that are connected between diode cathode and the ground, and the inverting input of described comparer is connected between two resistance.
3. according to claim 1 or 2 described battery detection circuits, it is characterized in that:
Described second bleeder circuit comprises two resistance of series connection, a resistance eutral grounding wherein, and another resistance is connected with the resistance that is connected in parallel on the diode two ends, and the in-phase input end of described comparer is connected between two resistance of series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201548650U CN201740857U (en) | 2010-04-02 | 2010-04-02 | Battery detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201548650U CN201740857U (en) | 2010-04-02 | 2010-04-02 | Battery detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201740857U true CN201740857U (en) | 2011-02-09 |
Family
ID=43556134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201548650U Expired - Fee Related CN201740857U (en) | 2010-04-02 | 2010-04-02 | Battery detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201740857U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414870A (en) * | 2017-02-10 | 2018-08-17 | 深圳市理邦精密仪器股份有限公司 | More battery detection circuit for access and electronic equipment |
-
2010
- 2010-04-02 CN CN2010201548650U patent/CN201740857U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414870A (en) * | 2017-02-10 | 2018-08-17 | 深圳市理邦精密仪器股份有限公司 | More battery detection circuit for access and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN NALIN ELEC. TECH. CO., LTD. Free format text: FORMER OWNER: XIE DAOPING Effective date: 20110215 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110215 Address after: Two building, two floor, Li Langping, Li Dadao, Teng Chau Industrial Park, Buji, Longgang District, Guangdong, Shenzhen 518000 Patentee after: SHENZHEN NALIN TECHNOLOGY CO., LTD. Address before: Two building, two floor, Li Langping, Li Dadao, Teng Chau Industrial Park, Buji, Longgang District, Guangdong, Shenzhen 518000 Patentee before: Xie Daoping |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20160402 |