CN204361652U - Intelligent storage battery connects the protective circuit of folder - Google Patents
Intelligent storage battery connects the protective circuit of folder Download PDFInfo
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- CN204361652U CN204361652U CN201420832985.XU CN201420832985U CN204361652U CN 204361652 U CN204361652 U CN 204361652U CN 201420832985 U CN201420832985 U CN 201420832985U CN 204361652 U CN204361652 U CN 204361652U
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Abstract
Intelligent storage battery connects a protective circuit for folder, and it comprises: a MCU control circuit; One accessory power supply voltage sampling circuit; One battery tension sample circuit; One for judging that the red line folder optocoupler logic judging circuit and of red line folder current potential is for judging the black line folder optocoupler logic judging circuit of black line folder current potential; One control relay circuit; And current sampling circuit; Wherein, hot wire clamp and black line folder on current potential and electric current normal time, MCU control relay control circuit, makes relay closes, red line folder and black line press from both sides conducting power.Intelligent storage battery of the present utility model connects the protective circuit of folder; bring more comprehensively defencive function; no matter be because wire clamp reversal connection red-black during misoperation is in accumulator anode and cathode; still before connecing storage battery, red-black clip touches because of carelessness; or plug-in power supply self electric quantity is not enough; or automobile current generator instead filling that plug-in power supply is carried out, play the plug-in power supply of protection and be without prejudice, and can car assisted startup.
Description
Technical field
The utility model relates to automobile accessory power supply arrangements of electric connection technical field, particularly relates to the protective circuit that a kind of Intelligent storage battery connects folder.
Background technology
When automobile storage battery electric power is not enough, usually cannot initiate automobile, the method usually solving this kind of problem is, with accessory power supply by connecting folder to automobile storage battery energising, thus starts automobile fast.Along with the progress of society; the awareness of safety of people strengthens gradually; and during automotive ignition startup; energy is huge, and danger coefficient is high, in existing wire rod protection device technique; only only has a battery lead automatic switching function; reverse connecting protection effect when only serving red-black line clamping connection automobile storage battery can be equal to, but the danger that the misoperations such as short circuit bring cannot be avoided, far can not meet car emergency ignition security demand.In existing automobile starting protection battery clamp, first, the danger that before red-black clip cannot be avoided to connect storage battery, short circuit brings; The second, after automobile starting, automobile current generator or storage battery can carry out big current reverse charging to plug-in power supply, and existing technology cannot avoid current flowing backwards to the harm of accessory power supply; 3rd, if accessory power supply electricity is not enough, voltage is lower, and automobile by force startup can cause damage to accessory power supply, and existing automobile start-up protector cannot play under-voltage protection function.Time particularly for automobile starting, heavy current impact.
Utility model content
The purpose of this utility model is to provide a kind of Intelligent storage battery to connect the protective circuit of folder, which solves big current when starting auxiliary power start at present, reverse connecting protection, the technical problem of short-circuit protection and short of electricity protection.
For achieving the above object, the technical scheme that the utility model proposes is:
A kind of Intelligent storage battery of the present utility model connects the protective circuit of folder, and it comprises: a MCU control circuit; The one accessory power supply voltage sampling circuit being coupled to described MCU control circuit; One battery tension sample circuit, described battery tension sample circuit is coupled to MCU control circuit; One for judging that the red line folder optocoupler logic judging circuit and of red line folder current potential is for judging the black line folder optocoupler logic judging circuit of black line folder current potential; One control relay circuit; And a current sampling circuit; Wherein, described accessory power supply voltage sampling circuit, battery tension sample circuit, red line folder optocoupler logic judging circuit, black line folder optocoupler logic judging circuit and current sampling circuit are coupled to MCU control circuit, for MCU provides control signal, hot wire clamp and black line folder on current potential and electric current normal time, MCU control relay control circuit, make relay closes, red line folder and the conducting of black line folder are powered.
Wherein, described black line folder is also in series with a copper-manganese resistance R16.
Wherein, also comprise a condition indication circuit, described condition indication circuit is controlled by MCU.
Wherein, described current sampling circuit comprises an amplifier U3.
Wherein, described control relay circuit comprises the triode Q1 of a relay K 1 and described relay K 1 break-make of a control, and wherein, the base stage of described triode Q1 is electrically connected on MCU.
Wherein, it is applied to automobile storage battery assistant starting.
Compared with prior art; Intelligent storage battery of the present utility model connects the protective circuit of folder; bring more comprehensively defencive function; no matter be because wire clamp reversal connection red-black during misoperation is in accumulator anode and cathode; still before connecing storage battery, red-black clip touches because of carelessness, or plug-in power supply self electric quantity is not enough, or instead filling of carrying out plug-in power supply of automobile current generator; play the plug-in power supply of protection to be without prejudice, and can car assisted startup.
Accompanying drawing explanation
Fig. 1 is the circuit diagram that the utility model Intelligent storage battery connects the protective circuit of folder;
Fig. 2 is the method flow diagram that the utility model Intelligent storage battery connects the protective circuit of folder.
Embodiment
Below with reference to accompanying drawing, elaboration is further given to the utility model.
Refer to Fig. 1, Intelligent storage battery of the present utility model connects the circuit diagram of the protective circuit of folder, and it is by MCU control relay control circuit, drives the logical and disconnected of relay, thus reaches the object of automobile assistant starting and safeguard protection simultaneously.Intelligent storage battery connects a protective circuit for folder, and it comprises: a MCU control circuit; The one accessory power supply voltage sampling circuit being coupled to described MCU control circuit; One battery tension sample circuit, described battery tension sample circuit is coupled to MCU control circuit; One for judging that the red line folder optocoupler logic judging circuit and of red line folder current potential is for judging the black line folder optocoupler logic judging circuit of black line folder current potential; One control relay circuit; And a current sampling circuit; Wherein, described accessory power supply voltage sampling circuit, battery tension sample circuit, red line folder optocoupler logic judging circuit, black line folder optocoupler logic judging circuit and current sampling circuit are coupled to MCU control circuit, for MCU provides control signal, hot wire clamp and black line folder on current potential and electric current normal time, MCU control relay control circuit, make relay closes, red line folder and the conducting of black line folder are powered.
Wherein, described MCU control circuit is the peripheral circuit that the drived control MCU of a routine normally works, and because its peripheral circuit of MCU of same model is substantially identical, is not repeated at this.
Described voltage sampling circuit comprises with accessory power supply voltage sampling circuit and battery tension sample circuit.Wherein, accessory power supply voltage sampling circuit is by resistance R10, R11, R21, R22 and electric capacity C6 forms, the circuit in parallel that resistance R10 and resistance R21 connects with resistance R11 and resistance R22 after connecting, and the two ends of wherein said resistance R21 are also parallel with described electric capacity C6.Node between resistance R10 and resistance R11 is connected to a 12V power supply by wire, and sampled signal exports to the 11st pin of MCU from the node between resistance R11 and resistance R22.Wherein said battery tension sample circuit is by resistance R12, R13, R23, R24 and electric capacity C7 forms, all element connected modes are identical with accessory power supply voltage sampling circuit, node wherein between resistance R12 and resistance R13 is connected to red wire clamp (according to the universal standard, red wire clamp connects the positive pole of accessory power supply, and black wire clamp connects the negative pole of accessory power supply) by wire.
Wherein said current sampling circuit is made up of amplifier U3 and its peripheral drive circuit, and the output of described operational amplifier U3 is connected to the 12nd pin of MCU.
Optocoupler logic judging circuit comprises: a red line folder optocoupler logic judging circuit and black line folder optocoupler logic judging circuit, wherein, red line folder optocoupler logic judging circuit is made up of optocoupler U4 and resistance R17, wherein first pin of optocoupler U4 is connected to black line folder, red line folder is connected to after resistance R17 described in second pin serial connection, its the 4th pin is connected to the 5th pin of MCU, the 3rd pin ground connection of U4.For red line folder logic judging circuit, when the voltage of black line folder presss from both sides higher than red line, optocoupler conducting, otherwise disconnect.Described black wire clamp logic judging circuit is made up of optocoupler U5 and resistance R18, second pin of optocoupler U5 is connected to black line folder, be connected to red line folder after resistance R18 described in first pin serial connection, its 4th pin is connected to the 6th pin of MCU, the 3rd pin ground connection of U4.For black line folder logic judging circuit, when the voltage of black line folder presss from both sides lower than red line, optocoupler conducting, otherwise disconnect.
Described control relay circuit comprises with relay K 1, a diode D1, and a triode Q1 forms.The collector electrode of wherein said triode is electrically connected on relay K 1, its base stage is electrically connected on MCU, and the controlled end of described relay K 1 is red line folder, is controlled the break-make of triode Q1 by MCU, thus the folding condition of control relay K1, final determine that red line presss from both sides whether conducting.
Wherein, the wire of described black line folder is also in series with a copper-manganese resistance R16, because copper-manganese resistance can bear larger impulse current, thus it is not damaged to possess protection accessory power supply.
Refer to accompanying drawing 1 and accompanying drawing 2, the protection course of work of this Intelligent storage battery protection connector is as follows:
Short-circuit protection: after accessory power supply EC5 connector connects accessory power supply; red wire clamp is connected the both positive and negative polarity of storage battery with black wire clamp; but red-black wire clamp cannot be avoided in operating process to touch short circuit; short circuit is abnormally dangerous; but by after the short circuit of this device, optocoupler logic judging circuit exports high level to MCU5 pin and MCU6 pin, then relay disconnects by MCU2 pin output low level control Q1; thus play a protective role, avoid dangerous generation.
Reverse connecting protection: after accessory power supply EC5 connector connects accessory power supply; because misoperation red line clamping connection has arrived the negative pole of storage battery; battery positive voltage received by black wire clamp; lucky both positive and negative polarity connects instead; but optocoupler logic judging circuit output low level is to MCU5 pin and high level to MCU6 pin; MCU2 pin goes out low level control Q1 and is disconnected by relay, thus plays a protective role, and avoids dangerous generation.
Under-voltage protection: during automobile assistant starting; MCU11 pin can carry out Real-Time Monitoring to accessory power supply voltage; when accessory power supply electricity is not enough to start automobile; start by force in order to avoid automobile and damage accessory power supply; this device plays under-voltage protection effect; when MCU11 pin detects that R10, R11, R21, R22, C6 form threshold value lower than automobile starting of the voltage of potential-divider network, MCU2 pin remains low level, and control Q1 makes relay remain open.Cut off current circuit and play under-voltage protection effect.
Instead fill protection: during automobile assistant starting, if automobile storage battery or automobile current generator voltage are higher than external auxiliary supply voltage, reverse charging can be carried out to accessory power supply, and electric current is uncontrollable, dangerous hidden danger, this device before relay closes MCU10 pin MCU11 pin to R10, R11, R21, R22, C6 forms potential-divider network and R12, R13, R23, R24, C7 forms potential-divider network and compares, guarantee without reverse charge stream, after condition meets MCU2 foot control relay closes, R16 copper-manganese resistance versus current is sampled, MCU12 pin is outputted to after operation amplifier, once there be reverse charge stream, MCU12 pin level can lower than 10MV, MCU2 pin output low level control relay disconnects.Cut off current circuit, play and instead fill protective effect.
Continue to differentiate: when the empty electricity of storage battery; voltage compare is high, and even higher than accessory power supply voltage, this device is in order to protect accessory power supply; instead can fill protection; now relay disconnects, once automobile starting, automobile storage battery empty voltage immediately declines; automobile accessory power supply is higher than automobile storage battery voltage; counter filling protects releasing, and Intelligent electric bottle clip enters normal workflow, and relay is opened rapidly.
Button clean boot: when automobile storage battery damages completely, when output voltage is 0V, this device still can adopt key mode to start, button is pressed, MCU3 pin detects the switching signal of S2, MCU5 pin can detect optocoupler logic judging circuit, MCU5 pin detects high level (without reversal connection) under normal circumstances, MCU10 pin can to R12, R13, R23, R24, the potential-divider network of C7 composition differentiates, voltage is more than 0.1V, outside connection normal (without short circuit) is described, so MCU2 pin exports high level control Q1 triode ON relay closes, again to R16 sampling through amplification after size of current and direction judge, triode enters normal workflow, its MCU current potential controlling to patrol for and if only if MCU5 is current potential that is high and MCU6 pin when being low, relay just conducting, otherwise disconnect.
Condition indication circuit, is made up of a red LED lamp and a green LED lamp, and when all processes are in normal condition, green LED lamp is bright, and represent that current operating state is normal, otherwise abnormal conditions then red LED lamp are bright, instruction is abnormal.Described condition indication circuit is controlled by MCU.
The invention also discloses the method for a kind of storage battery protection, it comprises the steps:
The first step 1, current potential judges; Compared by the current potential of accessory power supply voltage sampling signal and battery tension sampled signal, when the current potential of accessory power supply voltage sampling signal is high, and when the current potential of battery tension sampled signal is low, then enter second step, otherwise enter faulty indication 8;
Second step 2, wire clamp reversal connection or short circuit judge; When the output potential of optocoupler U4 is low, and when the output potential of optocoupler U5 is high, then red line folder and the reversal connection of black line folder, carry out faulty indication 8; Or when the output potential of optocoupler U4, U5 logic judging circuit is all high, then red line folder and black line folder short circuit, also carry out faulty indication; Otherwise, then relay closes 3 is driven;
3rd step 4, the sense of current judges; By sample circuit, the copper-manganese resistor current that flows through on black line folder is sampled, when electric current exceedes set point, then represent that electric current is reverse, disconnects relay 7, on the contrary latching relay closed 5;
4th step 6, accessory power supply electricity judges; Sampled by accessory power supply voltage sampling circuit, when the voltage signal of sampling is lower than set point, represents that accessory power supply electricity is not enough, then make relay disconnect, and faulty indication.
Preferably, also comprise a force start step, when automobile storage battery due to be connected with the circuit of automobile damage and cannot work time, by sending force start signal to MCU, thus make accessory power supply be forced to automobile to power, thus start automobile.
Foregoing; be only preferred embodiment of the present utility model; not for limiting embodiment of the present utility model; those of ordinary skill in the art are according to central scope of the present utility model and spirit; can carry out corresponding flexible or amendment very easily, therefore protection range of the present utility model should be as the criterion with the protection range required by claims.
Claims (6)
1. Intelligent storage battery connects a protective circuit for folder, it is characterized in that, comprising: a MCU control circuit; The one accessory power supply voltage sampling circuit being coupled to described MCU control circuit; One battery tension sample circuit, described battery tension sample circuit is coupled to MCU control circuit; One for judging that the red line folder optocoupler logic judging circuit and of red line folder current potential is for judging the black line folder optocoupler logic judging circuit of black line folder current potential; One control relay circuit; And a current sampling circuit; Wherein, described accessory power supply voltage sampling circuit, battery tension sample circuit, red line folder optocoupler logic judging circuit, black line folder optocoupler logic judging circuit and current sampling circuit are coupled to MCU control circuit, for MCU provides control signal, hot wire clamp and black line folder on current potential and electric current normal time, MCU control relay control circuit, make relay closes, red line folder and the conducting of black line folder are powered.
2. Intelligent storage battery as claimed in claim 1 connects the protective circuit of folder, it is characterized in that, described black line folder is also in series with a copper-manganese resistance R16.
3. Intelligent storage battery as claimed in claim 1 connects the protective circuit of folder, and it is characterized in that, also comprise a condition indication circuit, described condition indication circuit is controlled by MCU.
4. Intelligent storage battery as claimed in claim 1 connects the protective circuit of folder, and it is characterized in that, described current sampling circuit comprises an amplifier U3.
5. Intelligent storage battery as claimed in claim 1 connects the protective circuit of folder, it is characterized in that, described control relay circuit comprises the triode Q1 of a relay K 1 and described relay K 1 break-make of a control, and wherein, the base stage of described triode Q1 is electrically connected on MCU.
6. the Intelligent storage battery as described in claim 1 to 5 any one connects the protective circuit of folder, and it is characterized in that, it is applied to automobile storage battery assistant starting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420832985.XU CN204361652U (en) | 2014-12-24 | 2014-12-24 | Intelligent storage battery connects the protective circuit of folder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420832985.XU CN204361652U (en) | 2014-12-24 | 2014-12-24 | Intelligent storage battery connects the protective circuit of folder |
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| Publication Number | Publication Date |
|---|---|
| CN204361652U true CN204361652U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420832985.XU Active CN204361652U (en) | 2014-12-24 | 2014-12-24 | Intelligent storage battery connects the protective circuit of folder |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790203A (en) * | 2014-12-24 | 2016-07-20 | 深圳市创世达实业有限公司 | Protection circuit and method of intelligent accumulator connection clip |
| CN107069850A (en) * | 2017-03-20 | 2017-08-18 | 东莞市仲康电子科技有限公司 | A kind of automobile starting power supply wiring folder, which comes off, to be protected and reverse connecting protection system and method |
-
2014
- 2014-12-24 CN CN201420832985.XU patent/CN204361652U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790203A (en) * | 2014-12-24 | 2016-07-20 | 深圳市创世达实业有限公司 | Protection circuit and method of intelligent accumulator connection clip |
| CN105790203B (en) * | 2014-12-24 | 2018-08-10 | 深圳市创世达实业有限公司 | The protection circuit and method of Intelligent storage battery connection clip |
| CN107069850A (en) * | 2017-03-20 | 2017-08-18 | 东莞市仲康电子科技有限公司 | A kind of automobile starting power supply wiring folder, which comes off, to be protected and reverse connecting protection system and method |
| CN107069850B (en) * | 2017-03-20 | 2024-03-19 | 东莞市仲康电子科技有限公司 | System and method for falling protection and reverse connection protection of automobile starting power supply jointing clamp |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Lianchang Science Park, Nanwan Street, Longgang District, Shenzhen City, Guangdong Province, 4 buildings and 3 floors Patentee after: Shenzhen Chuangshida Industrial Co., Ltd. Address before: 518000 Lianchang Science Park, Nanwan Street, Longgang District, Shenzhen City, Guangdong Province, 4 buildings and 3 floors Patentee before: TRUSDA INDUSTRIAL CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |