CN203839998U - Battery charging reverse-connection protecting circuit - Google Patents
Battery charging reverse-connection protecting circuit Download PDFInfo
- Publication number
- CN203839998U CN203839998U CN201420098725.4U CN201420098725U CN203839998U CN 203839998 U CN203839998 U CN 203839998U CN 201420098725 U CN201420098725 U CN 201420098725U CN 203839998 U CN203839998 U CN 203839998U
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- Prior art keywords
- effect transistor
- field effect
- resistance
- battery
- field
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- Withdrawn - After Issue
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a battery charging reverse-connection protecting circuit. In the circuit, one end of a first resistor is connected with one end of a fuse; the other end of the first resistor and one end of a second resistor are connected with the source electrode of a first field-effect transistor; the other end of the second resistor and the grid electrode of the first field-effect transistor are connected with the drain electrode of a third field-effect transistor; the drain electrode of the first field-effect transistor, the grid electrode of the third field-effect transistor, one end of a third resistor, and the drain electrode of a second field-effect transistor are connected with the grid electrode of a fourth field-effect transistor; the source electrode of the third field-effect transistor, the other end of the third resistor, the source electrode of the second field-effect transistor, and one end of a fourth resistor are connected with the source electrode of the fourth field-effect transistor; the grid electrode of the second field-effect transistor and the other end of the fourth resistor, are connected with one end of a fifth resistor; and the other end of the fifth resistor is connected with the negative electrode of a diode. The circuit is advantaged by small energy loss, simple reverse-connection protecting process, and good reverse-connection protecting stability.
Description
Technical field
The utility model relates to the anti-circnit NOT of a kind of charging, especially relates to a kind of battery anti-circnit NOT that charges.
Background technology
Existing battery charging counnter attack circuit mainly contains two kinds: the anti-circnit NOT of the first is made up of a diode, this counnter attack circuit is because diode itself can produce the above voltage of 0.3V, so can produce very large energy loss in the time that large electric current charges to battery, thereby cause the heating of counnter attack diode serious, the charging interval lengthens, the anti-circnit NOT of the second is by two back-to-back being formed by connecting of field effect transistor, this anti-circnit NOT is when for cell anti-reverse, if charging input end is reverse or short circuit, this anti-circnit NOT cannot detect input terminal voltage or charging current, battery will directly enter charging process and damage thus, therefore this anti-circnit NOT need to coordinate with the single chip circuit of control program and uses, whether the single chip circuit first voltage to charging input end or charging current normally detects, then generate corresponding control signal and send to anti-circnit NOT, anti-circnit NOT determines whether cutting off battery charging according to control signal, realize thus the counnter attack protection to battery charging, this anti-circnit NOT need to coordinate single chip circuit and software program to use, counnter attack processing procedure more complicated, and counnter attack less stable.
Utility model content
It is less that technical problem to be solved in the utility model is to provide one energy loss in battery charging process, can not cause anti-circnit NOT heating serious, charging interval can not lengthen, and counnter attack processing procedure is simple, the battery of the counnter attack good stability anti-circnit NOT that charges.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of battery anti-circnit NOT that charges, is characterized in that comprising the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first field effect transistor, the second field effect transistor, the 3rd field effect transistor, the 4th field effect transistor, diode and fuse, one end of the first described resistance is connected with one end of described fuse and its link is anodal charging input end, the other end of the first described resistance, one end of the second described resistance is connected with the source electrode of the first described field effect transistor, the other end of the second described resistance, the grid of the first described field effect transistor is connected with the drain electrode of the 3rd described field effect transistor and its link is negative pole charging input end, the drain electrode of the first described field effect transistor, the grid of the 3rd described field effect transistor, one end of the 3rd described resistance, the drain electrode of the second described field effect transistor is connected with the grid of the 4th described field effect transistor, the source electrode of the 3rd described field effect transistor, the other end of the 3rd described resistance, the source electrode of the second described field effect transistor, one end of the 4th described resistance is connected with the source electrode of the 4th described field effect transistor, the grid of the second described field effect transistor, the other end of the 4th described resistance is connected with one end of the 5th described resistance, the other end of the 5th described resistance is connected with the negative pole of described diode, the drain electrode of the 4th described field effect transistor is for connecting the negative pole of battery, and the other end of described fuse is for connecting the positive pole of battery.
The two ends of the second described resistance are parallel with the first electric capacity, and the two ends of the 3rd described resistance are parallel with the second electric capacity.
Compared with prior art, the utility model has the advantage of the negative pole of battery to be charged is connected with the drain electrode of the 4th field effect, the positive pole of battery to be charged is connected with the other end of fuse, battery charge the anodal charging input end of anti-circnit NOT be connected with charging input end with negative pole charging input end after access input voltage, if the positive pole of charging input end and negative pole do not connect anti-or short circuit, now input voltage is normal, first input voltage is undertaken controlling the first field effect transistor conducting after voltage division processing by the first resistance and the second resistance, after the first field effect transistor conducting, control the 3rd field effect transistor and the 4th field effect transistor conducting, now battery to be charged two ends are communicated with charging input end, realize the charging of battery to be charged, after battery has charged, the second field effect transistor control the 3rd field effect transistor and the cut-off of the 4th field effect transistor realize charging and turn-off control, if the positive pole of charging input end and negative pole connect anti-or short circuit, now input voltage is undesired, input voltage is very little of zero, first input voltage is undertaken controlling the first field effect transistor cut-off after voltage division processing by the first resistance and the second resistance, now the 3rd field effect transistor and the cut-off of the 4th field effect transistor, battery to be charged two ends and charging input end disconnect, battery to be charged stops charging, realize the counnter attack protection to battery charging, circuit of the present utility model in battery charging process owing to using field effect transistor control, so can not produce larger voltage, energy loss is less, can not cause anti-circnit NOT heating serious, charging interval can not lengthen, and realize counnter attack processing by hardware circuit, process is simple, counnter attack good stability,
When being parallel with the first electric capacity in the two ends of the second resistance, when the two ends of the 3rd resistance are parallel with the second electric capacity, the high-frequency interferencing signal in the first electric capacity and the anti-circnit NOT of the second electric capacity filtering, improves counnter attack circuit anti-interference ability.
Brief description of the drawings
Fig. 1 is the circuit diagram of embodiment mono-;
Fig. 2 is the circuit diagram of embodiment bis-.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Embodiment mono-: as shown in the figure, a kind of battery anti-circnit NOT that charges, comprises 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, the first field effect transistor T1, the second field effect transistor T2, the 3rd field effect transistor T3, the 4th field effect transistor T4, diode D1 and fuse FUSE1, one end of the first resistance R 1 is connected with one end of fuse FUSE1 and its link is anodal charging input end, the other end of the first resistance R 1, one end of the second resistance R 2 is connected with the source electrode of the first field effect transistor T1, the other end of the second resistance R 2, the grid of the first field effect transistor T1 is connected with the drain electrode of the 3rd field effect transistor T3 and its link is negative pole charging input end, the drain electrode of the first field effect transistor T1, the grid of the 3rd field effect transistor T3, one end of the 3rd resistance R 3, the drain electrode of the second field effect transistor T2 is connected with the grid of the 4th field effect transistor T4, the source electrode of the 3rd field effect transistor T3, the other end of the 3rd resistance R 3, the source electrode of the second field effect transistor T2, one end of the 4th resistance R 4 is connected with the source electrode of the 4th field effect transistor T4, the grid of the second field effect transistor T2, the other end of the 4th resistance R 4 is connected with one end of the 5th resistance R 5, the other end of the 5th resistance R 5 is connected with the negative pole of diode D1, the positive pole access switching signal of diode D1, switching signal control battery charges or closes, the drain electrode of the 4th field effect T4 is for connecting the negative pole of battery, and the other end of fuse is for connecting the positive pole of battery.
The operation principle of the present embodiment is: the negative pole of battery to be charged is connected with the drain electrode of the 4th field effect T4, and the positive pole of battery to be charged is connected with the other end of fuse.Battery charge the anodal charging input end of anti-circnit NOT be connected with charging input end with negative pole charging input end after access input voltage, if the positive pole of charging input end and negative pole do not connect anti-or short circuit, now input voltage is normal, first input voltage is undertaken controlling the first field effect transistor T1 conducting after voltage division processing by the first resistance R 1 and the second resistance R 2, after the first field effect transistor T1 conducting, control the 3rd field effect transistor T3 and the 4th field effect transistor T4 conducting, now battery to be charged two ends are communicated with charging input end, realize the charging of battery to be charged, after battery has charged, the second field effect transistor T2 controls the 3rd field effect transistor T3 and the 4th field effect transistor T4 cut-off realization charging shutoff is controlled, if the positive pole of charging input end and negative pole connect anti-or short circuit, now input voltage is undesired, input voltage is very little of zero, first input voltage is undertaken controlling the first field effect transistor T1 cut-off after voltage division processing by the first resistance R 1 and the second resistance R 2, now the 3rd field effect transistor T3 and the 4th field effect transistor T4 cut-off, battery to be charged two ends and charging input end disconnect, and battery to be charged stops charging, realize the counnter attack protection to battery charging.
Embodiment bis-: this example and embodiment mono-are basic identical, difference is only that the two ends that the two ends of the second resistance are parallel with the first capacitor C 1, the three resistance R 3 are parallel with the second capacitor C 2.The first capacitor C 1 and the second capacitor C 2 in the present embodiment, are increased, high-frequency interferencing signal in the first capacitor C 1 and the anti-circnit NOT of the second capacitor C 2 filtering, improve counnter attack circuit anti-interference ability, the circuit of the present embodiment is stronger with respect to embodiment mono-its circuit stability.
Claims (2)
1. the battery anti-circnit NOT that charges, is characterized in that comprising the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first field effect transistor, the second field effect transistor, the 3rd field effect transistor, the 4th field effect transistor, diode and fuse, one end of the first described resistance is connected with one end of described fuse and its link is anodal charging input end, the other end of the first described resistance, one end of the second described resistance is connected with the source electrode of the first described field effect transistor, the other end of the second described resistance, the grid of the first described field effect transistor is connected with the drain electrode of the 3rd described field effect transistor and its link is negative pole charging input end, the drain electrode of the first described field effect transistor, the grid of the 3rd described field effect transistor, one end of the 3rd described resistance, the drain electrode of the second described field effect transistor is connected with the grid of the 4th described field effect transistor, the source electrode of the 3rd described field effect transistor, the other end of the 3rd described resistance, the source electrode of the second described field effect transistor, one end of the 4th described resistance is connected with the source electrode of the 4th described field effect transistor, the grid of the second described field effect transistor, the other end of the 4th described resistance is connected with one end of the 5th described resistance, the other end of the 5th described resistance is connected with the negative pole of described diode, the drain electrode of the 4th described field effect transistor is for connecting the negative pole of battery, and the other end of described fuse is for connecting the positive pole of battery.
2. a kind of battery according to claim 1 anti-circnit NOT that charges, is characterized in that the two ends of the second described resistance are parallel with the first electric capacity, and the two ends of the 3rd described resistance are parallel with the second electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420098725.4U CN203839998U (en) | 2014-03-05 | 2014-03-05 | Battery charging reverse-connection protecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420098725.4U CN203839998U (en) | 2014-03-05 | 2014-03-05 | Battery charging reverse-connection protecting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203839998U true CN203839998U (en) | 2014-09-17 |
Family
ID=51517795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420098725.4U Withdrawn - After Issue CN203839998U (en) | 2014-03-05 | 2014-03-05 | Battery charging reverse-connection protecting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203839998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812198A (en) * | 2014-03-05 | 2014-05-21 | 宁波市安博应急品有限公司 | Reverse charging preventing circuit of battery charging |
-
2014
- 2014-03-05 CN CN201420098725.4U patent/CN203839998U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812198A (en) * | 2014-03-05 | 2014-05-21 | 宁波市安博应急品有限公司 | Reverse charging preventing circuit of battery charging |
| CN103812198B (en) * | 2014-03-05 | 2015-09-02 | 宁波市安博新能源科技有限公司 | A kind of battery charges anti-circnit NOT |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NINGBO CITY ANBO NEW ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER NAME: NINGBO ANBO EMERGENCY PRODUCTS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 315212, 118, Zhenhai Avenue, Ningbo, Zhejiang Patentee after: Ningbo City Anbo New Energy Technology Co., Ltd. Address before: 315212, 118, Zhenhai Avenue, Ningbo, Zhejiang Patentee before: NINGBO AMBON EMERGENCY PRODUCTS CO., LTD. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140917 Effective date of abandoning: 20150902 |
|
| RGAV | Abandon patent right to avoid regrant |