CN109188300A - A kind of battery polar detection circuit - Google Patents
A kind of battery polar detection circuit Download PDFInfo
- Publication number
- CN109188300A CN109188300A CN201811128582.6A CN201811128582A CN109188300A CN 109188300 A CN109188300 A CN 109188300A CN 201811128582 A CN201811128582 A CN 201811128582A CN 109188300 A CN109188300 A CN 109188300A
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- China
- Prior art keywords
- battery
- diode
- relay
- battery polar
- detection circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 230000011664 signaling Effects 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The invention discloses a kind of battery polar detection circuits, it include: first diode D1, the second diode D2, relay J1, resistance R, relay J1 is connected with battery polar signaling interface, battery polar signal is sent to DSP by battery polar signaling interface, judge whether battery access polarity is correct by DSP, i.e., when battery polar signal is low level, judges that battery plus-negative plate access is correct, when battery polar signal is high level, judge that anode polarity accesses mistake.The battery polar detection circuit can find battery polar mistake early, avoid bigger failure and damage；Circuit is simple, easily realizes.
Description
Technical field:
The invention belongs to detection circuit technical fields, are specifically related to a kind of battery polar detection circuit.
Background technique:
UPS uninterruptible power supply its working principle is that, when mains failure, UPS is converted into battery input dc power to exchange
Electricity output supplies electricity to load and uses, in use if misoperation, it is easy to which the positive and negative electrode battery is reversed, this
In the case of when being switched on, caused by consequence be: it is light then damage ups power, it is heavy then generate strong spark discharge, seriously affect electricity
The service life in pond, or even harm is brought to personal safety.If therefore ups power accesses positive and negative Check up polarity without battery
If function and reversed defencive function, security risk there will necessarily be.
Summary of the invention:
For this purpose, technical problem to be solved by the present invention lies in the battery plus-negative plates of UPS uninterruptible power supply in the prior art
It is easily accessed mistake, influences the service life of battery, to propose a kind of battery polar detection circuit.
In order to achieve the above objectives, technical scheme is as follows:
A kind of battery polar detection circuit, comprising: first diode D1, the second diode D2, relay J1, resistance R；
First pole of the anode connection battery of the first diode D1, the cathode connection second of the first diode D1
The anode of diode D2,7 foot of primary coil of the cathode connection relay J1 of the second diode D2, the primary coil of relay J1
8 feet connect the second pole of battery, 4 foot of the normally open contact ground connection of relay J1, and 6 foot of normally open contact of relay J1 connects battery pole
Property signal port, the battery polar signal port connects DSP input terminal, and the first end of resistance R connects power supply VCC, resistance R's
6 foot of normally open contact of second end connection relay J1.
As a preferred embodiment of the above technical solution, the first diode D1 and the second diode D2 is two pole of switch
Pipe.
As a preferred embodiment of the above technical solution, the relay J1 is DC relay.
As a preferred embodiment of the above technical solution, the resistance R is pull-up resistor.
The beneficial effects of the present invention are: battery polar mistake is found early, avoids bigger failure and damage；Electricity
Road is simple, easily realizes.
Detailed description of the invention:
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:
Fig. 1 is a kind of battery polar detection circuit figure of one embodiment of the invention.
Specific embodiment:
As shown in Figure 1, a kind of battery polar detection circuit of the invention, comprising: first diode D1, the second diode
D2, relay J1, resistance R.The first diode D1 and the second diode D2 is switching diode.The relay
J1 is DC relay.The resistance R is pull-up resistor.
First pole of the anode connection battery of the first diode D1, the cathode connection second of the first diode D1
The anode of diode D2,7 foot of primary coil of the cathode connection relay J1 of the second diode D2, the primary coil of relay J1
8 feet connect the second pole of battery, 4 foot of the normally open contact ground connection of relay J1, and 6 foot of normally open contact of relay J1 connects battery pole
Property signal port, the battery polar signal port connects DSP input terminal, and the first end of resistance R connects power supply VCC, resistance R's
6 foot of normally open contact of second end connection relay J1.
According to the height of cell voltage, suitable DC relay is selected, the number by changing switching diode is depressured,
So that cell voltage supplies electricity to relay J1 work after being depressured.When battery polar signal is low level, battery plus-negative plate is judged
Property access it is correct, when battery polar signal is high level, judge that anode polarity accesses mistake.
Working principle:
When battery plus-negative plate access is correct, i.e. the extremely anode BAT+ of the first of battery, the second of battery is extremely
Battery cathode BAT-, since the anode of first diode D1 meets anode BAT+, because of the forward conduction characteristic of diode, thus it is electric
After cell voltage is depressured by first diode D1, the second diode D2, relay J1 is supplied electricity to, then relay J1 is closed, relay
4 foot of normally open contact of device J1 and 6 feet are connected, then the battery polar signal of battery polar signaling interface is low level, battery polar
Signaling interface, which send the battery polar signal, is judged as that battery access polarity is correct in DSP, DSP.
When battery plus-negative plate is reversed, i.e. the extremely battery cathode BAT- of the first of battery, the extremely battery of the second of battery
Anode BAT+, since the anode of first diode D1 becomes connecing the cathode BAT- of battery, because of the reversed cut-off characteristics of diode, therefore
The primary coil of relay J1 does not have supply voltage, so relay J1 is disconnected, then 4 foot of normally open contact of J1 and 6 feet disconnect, electricity
The battery polar signal of pond polar signal interface is high level, and battery polar signaling interface send the battery polar signal in DSP,
DSP is judged as that battery accesses incorrect polarity.
A kind of battery polar detection circuit described in the present embodiment, comprising: first diode D1, the second diode D2, after
Electric appliance J1, resistance R, relay J1 are connected with battery polar signaling interface, and battery polar signaling interface sends out battery polar signal
DSP is given, judges whether battery access polarity is correct, i.e., when battery polar signal is low level, judges battery just by DSP
Negative polarity access is correct, when battery polar signal is high level, judges that anode polarity accesses mistake.Battery polar detection
Circuit can find battery polar mistake early, avoid bigger failure and damage；Circuit is simple, easily realizes.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (4)
1. a kind of battery polar detection circuit characterized by comprising first diode D1, the second diode D2, relay
J1, resistance R；
First pole of the anode connection battery of the first diode D1, the cathode of the first diode D1 connect the two or two pole
The anode of pipe D2,7 foot of primary coil of the cathode connection relay J1 of the second diode D2,8 foot of primary coil of relay J1
The second pole of battery, 4 foot of the normally open contact ground connection of relay J1 are connected, 6 foot of normally open contact of relay J1 connects battery polar
Signal port, the battery polar signal port connect DSP input terminal, and the first end of resistance R connects power supply VCC, and the of resistance R
6 foot of normally open contact of two ends connection relay J1.
2. a kind of battery polar detection circuit according to claim 1, it is characterised in that: the first diode D1 and institute
Stating the second diode D2 is switching diode.
3. a kind of battery polar detection circuit according to claim 1, it is characterised in that: the relay J1 be direct current after
Electric appliance.
4. a kind of battery polar detection circuit according to claim 1, it is characterised in that: the resistance R is pull-up resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128582.6A CN109188300A (en) | 2018-09-27 | 2018-09-27 | A kind of battery polar detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128582.6A CN109188300A (en) | 2018-09-27 | 2018-09-27 | A kind of battery polar detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109188300A true CN109188300A (en) | 2019-01-11 |
Family
ID=64907214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811128582.6A Pending CN109188300A (en) | 2018-09-27 | 2018-09-27 | A kind of battery polar detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109188300A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239618A (en) * | 2020-03-09 | 2020-06-05 | 天津市捷威动力工业有限公司 | Module polarity detection method and detection tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4379989A (en) * | 1979-05-11 | 1983-04-12 | Robert Bosch Gmbh | System for preventing damage to a battery charger due to application of a battery with wrong polarity |
| CN201051129Y (en) * | 2007-06-28 | 2008-04-23 | 重庆大学 | LED polarity self recognition and self switch circuit |
| CN101854051A (en) * | 2010-05-27 | 2010-10-06 | 艾默生网络能源有限公司 | Hot plug device of high-voltage DC UPS |
| CN204631181U (en) * | 2015-06-01 | 2015-09-09 | 天津方圆电气有限公司 | The testing circuit of a kind of rechargeable battery positive and negative electrode reversal connection |
| CN205921443U (en) * | 2016-07-28 | 2017-02-01 | 福州米立科技有限公司 | Battery supply set pre -emergency electric access protection system |
| CN208953678U (en) * | 2018-09-27 | 2019-06-07 | 东莞市广荣电子制品有限公司 | A kind of battery polar detection circuit |
-
2018
- 2018-09-27 CN CN201811128582.6A patent/CN109188300A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4379989A (en) * | 1979-05-11 | 1983-04-12 | Robert Bosch Gmbh | System for preventing damage to a battery charger due to application of a battery with wrong polarity |
| CN201051129Y (en) * | 2007-06-28 | 2008-04-23 | 重庆大学 | LED polarity self recognition and self switch circuit |
| CN101854051A (en) * | 2010-05-27 | 2010-10-06 | 艾默生网络能源有限公司 | Hot plug device of high-voltage DC UPS |
| CN204631181U (en) * | 2015-06-01 | 2015-09-09 | 天津方圆电气有限公司 | The testing circuit of a kind of rechargeable battery positive and negative electrode reversal connection |
| CN205921443U (en) * | 2016-07-28 | 2017-02-01 | 福州米立科技有限公司 | Battery supply set pre -emergency electric access protection system |
| CN208953678U (en) * | 2018-09-27 | 2019-06-07 | 东莞市广荣电子制品有限公司 | A kind of battery polar detection circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239618A (en) * | 2020-03-09 | 2020-06-05 | 天津市捷威动力工业有限公司 | Module polarity detection method and detection tool |
| CN111239618B (en) * | 2020-03-09 | 2022-05-10 | 天津市捷威动力工业有限公司 | Module polarity detection method and detection tool |
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