CN203982243U - Voltage reference circuit for lithium battery - Google Patents
Voltage reference circuit for lithium battery Download PDFInfo
- Publication number
- CN203982243U CN203982243U CN201420278150.4U CN201420278150U CN203982243U CN 203982243 U CN203982243 U CN 203982243U CN 201420278150 U CN201420278150 U CN 201420278150U CN 203982243 U CN203982243 U CN 203982243U
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- Prior art keywords
- trench igbt
- resistance
- circuit
- trench
- igbt
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of voltage reference circuit for lithium battery, comprise a P trench igbt～four P trench igbt, the one N trench igbt, the 2nd N trench igbt, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, electric capacity, diode and direct supply, the first resistance and electric capacity form RC start-up circuit, the 2nd P trench igbt, the 3rd P trench igbt, the one N trench igbt, the 2nd N trench igbt and the second resistance form biasing circuit.Voltage reference circuit for lithium battery described in the utility model, is added with start-up circuit, guarantees that circuit can enter duty in time.This circuit has control signal input just normally to start, and there is no control signal input just in low pressure holding state, greatly reduces power consumption.
Description
Technical field
The utility model relates to a kind of auxiliary circuit of lithium battery, relates in particular to a kind of voltage reference circuit for lithium battery.
Background technology
Lithium battery is an important milestone of energy technology field, compare with other secondary cell, lithium battery has higher volume density and energy density, therefore in the palmtronics such as mobile phone, PDA(Personal Digital Assistant), notebook computer, has obtained application very widely.Lithium battery in use exists and overcharges, cross put, the problem of overcurrent, therefore need one not with the reference voltage of temperature and change in voltage.Current voltage reference circuit start delay, power consumption is higher.
Summary of the invention
For above-mentioned the deficiencies in the prior art part, the utility model provides a kind of voltage reference circuit of the low-power consumption for lithium battery.
To achieve these goals, the technical solution adopted in the utility model is:
Voltage reference circuit for lithium battery described in the utility model, comprise a P trench igbt, the 2nd P trench igbt, the 3rd P trench igbt, the 4th P trench igbt, the one N trench igbt, the 2nd N trench igbt, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, electric capacity, diode and direct supply, the positive pole of described direct supply is connected with the source electrode of a described P trench igbt, the grid of a described P trench igbt is as the control signal input end of described voltage reference circuit, the drain electrode while of a described P trench igbt and the source electrode of described the 2nd P trench igbt, the source electrode of described the 3rd P trench igbt, the grid of described the 4th P trench igbt, the source electrode of described the 4th P trench igbt connects, the drain electrode while of described the 2nd P trench igbt and the first end of described the first resistance, the drain electrode of a described N trench igbt connects, the second end of described the first resistance is connected with the first end of described electric capacity, the grid of described the 2nd P trench igbt is connected with the grid of described the 3rd P trench igbt, the drain electrode while of described the 3rd P trench igbt and the first end of described the second resistance, the grid of described the 2nd N trench igbt connects, the grid while of a described N trench igbt and the second end of described the second resistance, the drain electrode of described the 2nd N trench igbt connects, the negative pole while of described direct supply and the second end of described electric capacity, the source electrode of a described N trench igbt, the source electrode of described the 2nd N trench igbt, the negative pole of described diode, the first end of described the 3rd resistance connects, the positive pole of described diode is connected with the first end of described the 4th resistance, the drain electrode while of described the 4th P trench igbt and the second end of described the 4th resistance, the first end of described the 5th resistance connects and as the first reference voltage output end of described voltage reference circuit, the second end of described the 5th resistance is connected with the second end of described the 3rd resistance and as the second reference voltage output end of described voltage reference circuit.
Compared with prior art, the beneficial effects of the utility model:
Voltage reference circuit for lithium battery described in the utility model, is added with start-up circuit, guarantees that circuit can enter duty in time.This circuit has control signal input just normally to start, and there is no control signal input just in low pressure holding state, greatly reduces power consumption.
Accompanying drawing explanation
Fig. 1 is that the utility model is for the circuit diagram of the voltage reference circuit of lithium battery.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in Figure 1, voltage reference circuit for lithium battery described in the utility model, comprise a P trench igbt MP1, the 2nd P trench igbt MP2, the 3rd P trench igbt MP3, the 4th P trench igbt MP4, the one N trench igbt MN1, the 2nd N trench igbt MN2, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, capacitor C, diode D and direct supply Vdd, the positive pole of direct supply Vdd is connected with the source electrode of a P trench igbt MP1, the grid of the one P trench igbt MP1 is as the control signal input end Vs of voltage reference circuit, the drain electrode while of the one P trench igbt MP1 and the source electrode of the 2nd P trench igbt MP2, the source electrode of the 3rd P trench igbt MP3, the grid of the 4th P trench igbt MP4, the source electrode of the 4th P trench igbt MP4 connects, the drain electrode while of the 2nd P trench igbt MP2 and the first end of the first resistance R 1, the drain electrode of the one N trench igbt MN1 connects, the second end of the first resistance R 1 is connected with the first end of capacitor C, the grid of the 2nd P trench igbt MP2 is connected with the grid of the 3rd P trench igbt MP3, the drain electrode while of the 3rd P trench igbt MP3 and the first end of the second resistance R 2, the grid of the 2nd N trench igbt MN2 connects, the grid while of the one N trench igbt MN1 and the second end of the second resistance R 2, the drain electrode of the 2nd N trench igbt MN2 connects, the negative pole while of direct supply Vdd and the second end of capacitor C, the source electrode of the one N trench igbt MN1, the source electrode of the 2nd N trench igbt MN2, the negative pole of diode D, the first end of the 3rd resistance R 3 connects, the positive pole of diode D is connected with the first end of the 4th resistance R 4, the drain electrode while of the 4th P trench igbt MP4 and the second end of the 4th resistance R 4, the first end of the 5th resistance R 5 connects and as the first reference voltage output end Vo1 of voltage reference circuit, the second end of the 5th resistance R 5 is connected with the second end of the 3rd resistance R 3 and as the second reference voltage output end Vo2 of voltage reference circuit.
Voltage reference circuit for lithium battery described in the utility model, the first resistance R 1 and capacitor C form RC start-up circuit, and the 2nd P trench igbt MP2, the 3rd P trench igbt MP3, a N trench igbt MN1, the 2nd N trench igbt MN2 and the second resistance R 2 form biasing circuit.Voltage reference circuit for lithium battery described in the utility model, when control signal end Vs has signal input, the one P trench igbt MP1 conducting, RC start-up circuit starts biasing circuit in time, biasing circuit produces an electric current with positive temperature coefficient (PTC), through the 4th resistance R 4 with the diode D of negative temperature coefficient, can obtain the first reference voltage V o1 of zero-temperature coefficient, utilize the dividing potential drop of the 3rd resistance R 3 and the 5th resistance R 5 can obtain the second reference voltage V o2; When control signal end Vs does not have signal input, a P trench igbt MP1 cut-off, circuit enters low pressure holding state, and the electric current of consumption is only determined by the leakage current of a P trench igbt MP1, is beneficial to reduction power consumption.
Claims (1)
1. the voltage reference circuit for lithium battery, it is characterized in that: comprise a P trench igbt, the 2nd P trench igbt, the 3rd P trench igbt, the 4th P trench igbt, the one N trench igbt, the 2nd N trench igbt, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, electric capacity, diode and direct supply, the positive pole of described direct supply is connected with the source electrode of a described P trench igbt, the grid of a described P trench igbt is as the control signal input end of described voltage reference circuit, the drain electrode while of a described P trench igbt and the source electrode of described the 2nd P trench igbt, the source electrode of described the 3rd P trench igbt, the grid of described the 4th P trench igbt, the source electrode of described the 4th P trench igbt connects, the drain electrode while of described the 2nd P trench igbt and the first end of described the first resistance, the drain electrode of a described N trench igbt connects, the second end of described the first resistance is connected with the first end of described electric capacity, the grid of described the 2nd P trench igbt is connected with the grid of described the 3rd P trench igbt, the drain electrode while of described the 3rd P trench igbt and the first end of described the second resistance, the grid of described the 2nd N trench igbt connects, the grid while of a described N trench igbt and the second end of described the second resistance, the drain electrode of described the 2nd N trench igbt connects, the negative pole while of described direct supply and the second end of described electric capacity, the source electrode of a described N trench igbt, the source electrode of described the 2nd N trench igbt, the negative pole of described diode, the first end of described the 3rd resistance connects, the positive pole of described diode is connected with the first end of described the 4th resistance, the drain electrode while of described the 4th P trench igbt and the second end of described the 4th resistance, the first end of described the 5th resistance connects and as the first reference voltage output end of described voltage reference circuit, the second end of described the 5th resistance is connected with the second end of described the 3rd resistance and as the second reference voltage output end of described voltage reference circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420278150.4U CN203982243U (en) | 2014-05-28 | 2014-05-28 | Voltage reference circuit for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420278150.4U CN203982243U (en) | 2014-05-28 | 2014-05-28 | Voltage reference circuit for lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203982243U true CN203982243U (en) | 2014-12-03 |
Family
ID=51979676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420278150.4U Expired - Fee Related CN203982243U (en) | 2014-05-28 | 2014-05-28 | Voltage reference circuit for lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203982243U (en) |
-
2014
- 2014-05-28 CN CN201420278150.4U patent/CN203982243U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150924 Address after: 518100, Fuyong street, Baoan District, Guangdong Province, fourth industrial estate, 4 factory building, Hui Mingsheng Industrial Park, three or four, Shenzhen Patentee after: YUYUANFENG TECH (SHENZHEN) CO., LTD. Address before: 636350 Taiping Road, Wanyuan Town, Wanyuan City, Sichuan, Dazhou Patentee before: WANYUAN HAILV TECHNOLOGY CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20180528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |