CN202093153U - Over-voltage detection and alarm circuit for rechargeable battery - Google Patents
Over-voltage detection and alarm circuit for rechargeable battery Download PDFInfo
- Publication number
- CN202093153U CN202093153U CN2011201880674U CN201120188067U CN202093153U CN 202093153 U CN202093153 U CN 202093153U CN 2011201880674 U CN2011201880674 U CN 2011201880674U CN 201120188067 U CN201120188067 U CN 201120188067U CN 202093153 U CN202093153 U CN 202093153U
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- resistance
- integrated circuit
- transistor switch
- unit integrated
- rechargeable battery
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Abstract
The utility model discloses an over-voltage detection and alarm circuit for a rechargeable battery, comprising: a DC source; a transistor switch; a relay connected with a collector electrode of the transistor switch; a four-operational amplifier integrated circuit; a first resistor, a first slide resistor and a third resistor which are connected in series in order and then connected to one input terminal of the four-operational amplifier integrated circuit; and a fourth resistor, a second slide resistor and a sixth resistor which are connected in series in order and then connected to the other one input terminal of the four-operational amplifier integrated circuit. The over-voltage detection and alarm circuit for the rechargeable battery in the utility model can give an alarm and cut off the circuit timely during an over-voltage charging process, thereby avoiding damage of the battery, and playing a protection role.
Description
Technical field
The utility model relates to a kind of overvoltage detection and warning circuit of rechargeable battery.
Background technology
The benefit of rechargeable battery is economy, environmental protection, electric weight foot, is fit to electrical equipment high-power, long-time use.The superperformance of rechargeable battery itself makes its application in portable products such as mobile phone, notebook computer more and more widely.Yet the weak point of most of rechargeable batteries is the requirement of charger relatively harsher, to having relatively high expectations of holding circuit.Wherein representational is lithium ion battery, and the charging modes of its requirement is the constant current constant voltage mode, in order effectively to utilize battery capacity, need be with the maximum voltage that charges to of battery, but the overvoltage charging can cause battery to damage, and this just needs high control precision.Therefore, how when the overvoltage charging takes place, in time report to the police, get rid of or avoid fault, just become a problem that needs solve.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art and overvoltage detection and warning circuit that a kind of rechargeable battery is provided, and it can in time report to the police and cut off circuit when overvoltage is charged, thereby plays a protective role.
The technical scheme that realizes above-mentioned purpose is: a kind of overvoltage detection and warning circuit of rechargeable battery, it comprises a direct current power supply, one transistor switch, a relay that links to each other with the collector of described transistor switch, one four high guaily unit integrated circuit, the series connection back connects first resistance of an input end of described four high guaily unit integrated circuit successively, first swept resistance and the 3rd resistance, the series connection back connects the 4th resistance of another input end of described four high guaily unit integrated circuit successively, second swept resistance and the 6th resistance, wherein
The source electrode of described transistor switch links to each other with the output terminal of described four high guaily unit integrated circuit by one the 9th resistance, and the source electrode of described transistor switch links to each other with the emitter of this transistor switch and ground connection by one the 8th resistance;
Described four high guaily unit integrated circuit connects described direct supply, simultaneously ground connection;
Described first resistance, one end connects described direct supply, and the other end is by one second resistance eutral grounding;
Described the 4th resistance one end connects described direct supply, and the other end is by one the 5th resistance eutral grounding;
Described relay connects described direct supply, and the normally closed contact of described relay is connected between a described direct supply and the warning device, described warning device ground connection.
The beneficial effects of the utility model are: the overvoltage detection and the warning circuit of rechargeable battery of the present utility model, and can when charge, rechargeable battery generation overvoltage in time give the alarm, and in time cut off circuit, thereby avoid the damage of battery, play the effect of protection.
Description of drawings
Fig. 1 is the overvoltage detection of rechargeable battery of the present utility model and the circuit diagram of warning circuit;
Fig. 2 is the pinouts of LM324 four high guaily unit integrated circuit of the present utility model;
Fig. 3 is the overvoltage detection of rechargeable battery of the present utility model and the photovoltaic cell experimental applications circuit diagram of warning circuit.
Embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is elaborated:
See also Fig. 1, and in conjunction with Fig. 2, the overvoltage detection and the warning circuit of a kind of rechargeable battery of the present utility model, it comprises a direct current power supply VIN24, one transistor switch Q1, a relay 2 that links to each other with the collector of transistor switch Q1, one four high guaily unit integrated circuit 1, the series connection back connects first resistance R 1 of the pin 2 of four high guaily unit integrated circuit 1 successively, the first swept resistance Rb1 and the 3rd resistance R 3, the series connection back connects the 4th resistance R 4 of the pin 3 of four high guaily unit integrated circuit 1 successively, the second swept resistance Rb2 and the 6th resistance R 6, wherein
The source electrode of transistor switch Q1 links to each other with pin 9 with the pin 8 of four high guaily unit integrated circuit 1 by the 9th resistance R 9, and the source electrode of transistor switch Q1 links to each other and ground connection by the emitter with transistor switch Q1 of the 8th resistance R 8;
Four high guaily unit integrated circuit 1 adopts LM324 four high guaily unit integrated circuit, and its pin 1 links to each other with pin 10, and pin 4 connects direct supply VIN24, pin 11 ground connection;
First resistance R, 1 one ends connect direct supply VIN24, and the other end is by second resistance R, 2 ground connection;
The 4th resistance R 4 one ends connect direct supply VIN24, and the other end is by the 5th resistance R 5 ground connection;
See also Fig. 3, adopt photovoltaic cell to test overvoltage detection and the warning circuit of using rechargeable battery of the present utility model, specific as follows:
Adopt photovoltaic cell---the form of four solar panels parallel connections, output 5.5V voltage, 1A electric current.Through DC-DC buck mu balanced circuit, the burning voltage (being equivalent to direct supply VIN24) of output 8.4V is the lithium cell charging of LM2577S+LM2596S to two joint models.The main detection: after photovoltaic cell charged to rechargeable battery by DC-DC buck mu balanced circuit, the voltage at battery two ends constantly rose.When overvoltage, warning device 3 gives the alarm, and four high guaily unit integrated circuit 1 output high level makes transistor switch Q1 conducting simultaneously, and electric thereby relay 2 gets, the normally closed contact K1 of pilot relay disconnects, thereby disconnects the contact of battery and charging device.At this moment, because no longer overvoltage, warning device 3 stops alarm.
Below embodiment has been described in detail the utility model in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the utility model according to the above description.Thereby some details among the embodiment should not constitute qualification of the present utility model, and the scope that the utility model will define with appended claims is as protection domain of the present utility model.
Claims (1)
1. the overvoltage detection and the warning circuit of a rechargeable battery, it is characterized in that, it comprises a direct current power supply, one transistor switch, a relay that links to each other with the collector of described transistor switch, one four high guaily unit integrated circuit, the series connection back connects first resistance of an input end of described four high guaily unit integrated circuit successively, first swept resistance and the 3rd resistance, the series connection back connects the 4th resistance of another input end of described four high guaily unit integrated circuit successively, second swept resistance and the 6th resistance, wherein
The source electrode of described transistor switch links to each other with the output terminal of described four high guaily unit integrated circuit by one the 9th resistance, and the source electrode of described transistor switch links to each other with the emitter of this transistor switch and ground connection by one the 8th resistance;
Described four high guaily unit integrated circuit connects described direct supply, simultaneously ground connection;
Described first resistance, one end connects described direct supply, and the other end is by one second resistance eutral grounding;
Described the 4th resistance one end connects described direct supply, and the other end is by one the 5th resistance eutral grounding;
Described relay connects described direct supply, and the normally closed contact of described relay is connected between a described direct supply and the warning device, described warning device ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201880674U CN202093153U (en) | 2011-06-07 | 2011-06-07 | Over-voltage detection and alarm circuit for rechargeable battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201880674U CN202093153U (en) | 2011-06-07 | 2011-06-07 | Over-voltage detection and alarm circuit for rechargeable battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093153U true CN202093153U (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201880674U Expired - Fee Related CN202093153U (en) | 2011-06-07 | 2011-06-07 | Over-voltage detection and alarm circuit for rechargeable battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093153U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707126A (en) * | 2012-06-14 | 2012-10-03 | 镇江船舶电器有限责任公司 | Undervoltage alarm module of storage battery |
| CN104020344A (en) * | 2014-06-24 | 2014-09-03 | 新誉集团有限公司 | Front-stage overvoltage detection device for railway passenger car |
-
2011
- 2011-06-07 CN CN2011201880674U patent/CN202093153U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707126A (en) * | 2012-06-14 | 2012-10-03 | 镇江船舶电器有限责任公司 | Undervoltage alarm module of storage battery |
| CN104020344A (en) * | 2014-06-24 | 2014-09-03 | 新誉集团有限公司 | Front-stage overvoltage detection device for railway passenger car |
| CN104020344B (en) * | 2014-06-24 | 2016-05-25 | 新誉集团有限公司 | Prime overvoltage checkout gear for trolley coach |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20120607 |