CN1571277A - Novel electronic circuit waterproof device - Google Patents
Novel electronic circuit waterproof device Download PDFInfo
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- CN1571277A CN1571277A CN 200410039817 CN200410039817A CN1571277A CN 1571277 A CN1571277 A CN 1571277A CN 200410039817 CN200410039817 CN 200410039817 CN 200410039817 A CN200410039817 A CN 200410039817A CN 1571277 A CN1571277 A CN 1571277A
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Abstract
A novel electronic circuit waterproof device includes a battery protection circuit which includes a battery protection integrate circuit, a first field effect tube, a second field effect tube, a positive pole output end and a negative pole output end; the sensitive discharge current detecting input end of the battery protection integrate circuit is connected with a water trigger circuit or the negative pole output end of the battery is connected with a water trigger circuit. The characteristic of the invention is that: the structure and circuit is simple, the cost is low, it can be easily actualized, the property, function and use method of the primary electronic product will not be influenced, it not only has the function of over charge protection, over discharge protection, over current protection, short circuit protection for the primary battery but also can quickly cut off power output when encountering water, thereby the electronic product such as mobile phone, digital video camera, PDA can be continuously used only after a dry operation after the product is drenched or soaked by water under the circumstance of not needing water proof sealing treatment, and the primary property and function are not influenced.
Description
One, technical field:
The present invention relates to meet the battery that water can cut off battery supply output automatically, is the anti-hydrophone of a kind of novel electronic circuit.
Two, background technology:
At present; known lithium battery protection circuit is a kind ofly had over-charge protective, is crossed the battery protecting circuit put four kinds of lithium cell defencive functions such as protection, overcurrent protection, short-circuit protection by what circuit base plate, li-ion cell protection chip, field effect transistor and Resistor-Capacitor Unit etc. were formed; just for one of using always, this battery protecting circuit comprises the cathode output end of battery protection integrated circuit, first field effect transistor, second field effect transistor, battery and the cathode output end of battery to battery protecting circuit as shown in Figure 3.Li-ion cell protection chip commonly used has its functions such as DW01 series, Ricoh's series, Seiko series identical; Field effect transistor commonly used has its functions such as 9926 series, 5N series, 7900 series, 8601 series identical; Identical by its structure of li-ion cell protection plate that they constitute, function too.Different is, and cost and control precision and internal resistance are in different size.This be a kind of maturation as portable type electronic products such as mobile phone, Digital Video, PDA with lithium ion power supply in the li-ion cell protection plate circuit of extensive use.But this li-ion cell protection plate can only protect lithium cell not to be damaged, and but can not protect the water inlet of load electronic circuit not to be damaged later.Because after the load electronic circuit falls into water accidentally as: portable type electronic products such as mobile phone, Digital Video, PDA; at random the li-ion cell protection plate of inside, charged source can not cut off the electricity supply automatically; therefore in water electrochemical reaction can take place, cause the load electronic circuit to damage even scrap.
Three, summary of the invention:
The invention provides the anti-hydrophone of a kind of novel electronic circuit, it can cut off power supply output of battery immediately when meeting water, thus solved drenched by water or be immersed in water after cause the impaired problem of electronic product.
Technical scheme of the present invention realizes by following measure: a kind of novel electronic circuit is prevented hydrophone; comprise battery protecting circuit; this battery protecting circuit comprises the cathode output end of battery protection integrated circuit, first field effect transistor, second field effect transistor, battery and the cathode output end of battery, and the cathode output end that the responsive discharging current detection input of battery protection integrated circuit is connected to water circuits for triggering or battery is connected to the water circuits for triggering.
The responsive discharging current of above-mentioned battery protection integrated circuit detects input and can be conducted with the cathode output end of battery; Perhaps, the responsive discharging current of above-mentioned battery protection integrated circuit detect input can and the cathode output end of battery between be connected to second resistance.
Above-mentioned water circuits for triggering can comprise and are subjected to water induction end and transistor or field effect transistor; and the responsive discharging current detection input of the output of transistor or field effect transistor and battery protection integrated circuit is conducted; the water induction end that is subjected to of the control end of transistor or field effect transistor and water circuits for triggering is conducted, and the input of transistor or field effect transistor and the cathode output end of battery are conducted.
Above-mentioned water circuits for triggering can comprise and are subjected to water induction end and transistor or field effect transistor; and the responsive discharging current detection input of the output of transistor or field effect transistor and battery protection integrated circuit is conducted; the water induction end that is subjected to of the control end of transistor or field effect transistor and water circuits for triggering is conducted, and the positive source input of the input of transistor or field effect transistor and battery protection integrated circuit is conducted.
Can be connected to second electric capacity between the power cathode input of the control end of above-mentioned transistor or field effect transistor and battery protection integrated circuit; Perhaps, can be connected to second electric capacity between the electrode input end of the control end of above-mentioned transistor or field effect transistor and battery.
Can be connected to the 4th resistance between the input of above-mentioned this transistor and the cathode output end of battery.
Above-mentioned water circuits for triggering comprise field effect transistor, transistor and are subjected to the water induction end, the input of this field effect transistor and the cathode output end of battery are conducted, the control end of this field effect transistor and the input of triode are conducted, be connected to the 4th resistance between the input of transistor and the cathode output end of battery, the output of transistor and the output of field effect transistor are conducted, the water induction end that is subjected to of the control end of transistor and water circuits for triggering is conducted, and the output of field effect transistor and the cathode output end of battery are conducted.
Above-mentioned water circuits for triggering can comprise field effect transistor; transistor and be subjected to the water induction end; the input of this field effect transistor and the cathode output end of battery are conducted; the control end of this field effect transistor and the input of transistor are conducted; be connected to the 4th resistance between the input of transistor and the cathode output end of battery; the output of transistor and the output of field effect transistor are conducted; the water induction end that is subjected to of the control end of transistor and water circuits for triggering is conducted, and the responsive discharging current of the output of field effect transistor and battery protection integrated circuit detects input and is conducted.
Above-mentioned water circuits for triggering can comprise field effect transistor, transistor and be subjected to the water induction end, the input of this field effect transistor and the cathode output end of battery are conducted, the control end of this field effect transistor and the output of transistor are conducted, the input of transistor and the cathode output end of battery are conducted, be connected to the 4th resistance between the output of transistor and the cathode output end of battery, the water induction end that is subjected to of the control end of transistor and water circuits for triggering is conducted, and the output of field effect transistor and the cathode output end of battery are conducted.
Above-mentioned water circuits for triggering can comprise field effect transistor; transistor and be subjected to the water induction end; the input of this field effect transistor and the cathode output end of battery are conducted; the control end of this field effect transistor and the output of transistor are conducted; the input of transistor and the cathode output end of battery are conducted; be connected to the 4th resistance between the input of transistor and the cathode output end of battery; the water induction end that is subjected to of the control end of transistor and water circuits for triggering is conducted, and the responsive discharging current of the output of field effect transistor and battery protection integrated circuit detects input and is conducted.
Above-mentioned transistor can adopt negative-positive-negative transistor or positive-negative-positive transistor.
Above-mentioned field effect transistor can adopt P-channel field-effect transistor (PEFT) pipe or N channel field-effect pipe.
One of operation principle of the present invention is: as shown in Figure 1, under normal condition, it is low level that the responsive discharging current of battery protection integrated circuit U1 detects input CS, make the mistake of battery protection integrated circuit U1 put the grid G 1 that protection control end OD output high level is delivered to the first field effect transistor V1, make the drain D 1 and source S 1 conducting of the first field effect transistor V1, thereby make the negative input of battery and novel electronic circuit of the present invention prevent that the cathode output end BATT-conducting of the battery of hydrophone has power supply output; Prevent the cathode output end BATT+ of the battery of hydrophone when novel electronic circuit of the present invention; the cathode output end BATT-of battery and when being subjected to water induction end FS to be subjected to water simultaneously; because the electric action of water; to the water circuits for triggering are triggered and conducting; input 2 and the output 3 responsive discharging current of delivering to battery protection integrated circuit U1 of the high potential of cathode output end BATT+ that makes battery by the water circuits for triggering detects input CS; when current potential surpasses 200 millivolts; the mistake of battery protection integrated circuit U1 is put protection control end OD output low level; grid G 1 current potential of the first field effect transistor V1 is dragged down, cause the drain D 1 of the first field effect transistor T1 and source S 1 to disconnect the waterproofing protection state that enters.This waterproofing protection state will last till to disconnect between the cathode output end BATT-of cathode output end BATT+ and battery of battery of the anti-hydrophone of load electronic circuit and novel electronic circuit of the present invention always not to be had till the Mechanical Contact, and novel electronic circuit of the present invention prevents that hydrophone automatically restores to the normal power supply state at this moment.
Two of operation principle of the present invention is: as shown in Figure 2, under normal condition, the cathode output end BATT-conducting of the battery of the anti-hydrophone of the negative input of battery and novel electronic circuit of the present invention has power supply output; As the cathode output end BATT-of the cathode output end BATT+ of the battery of the anti-hydrophone of novel electronic circuit of the present invention, battery with when being subjected to water induction end FS to be subjected to water simultaneously; because the electric action of water; to the water circuits for triggering are triggered and conducting; make input 2 and output 3 with the cathode output end BATT-conducting of the battery short circuit of the cathode output end BATT+ of battery by the water circuits for triggering; make the short-circuit protection function starting of battery protecting circuit, thereby deenergization output enters the waterproofing protection state.This waterproofing protection state will last till always that the anti-hydrophone of novel electronic circuit of the present invention this moment automatically restores to the normal power supply state till being eliminated between the cathode output end BATT-of the cathode output end BATT+ of battery and battery.
The present invention has following characteristics: structure and circuit are simple; cost is low; be convenient to implement; do not influence the performance of primary electron product; function and using method; the over-charge protective that not only has primary cell; cross and put protection; overcurrent protection; four kinds of defencive functions such as short-circuit protection; also has the function of cutting off battery supply output when meeting water immediately; thereby used the electronic product of the anti-hydrophone of this novel electronic circuit; as: mobile phone; Digital Video; portable type electronic products such as PDA; do not needing its electronic product carried out under the situation that waterproof sealing handles; after being drenched by water or being immersed in water; only need thoroughly dry wait operate after; still continue and to use, and do not influence the performance and the function of primary electron product.
Four, description of drawings:
Accompanying drawing 1 is one of fundamental diagram of the present invention; Accompanying drawing 2 is one of fundamental diagram of the present invention;
Accompanying drawing 3 is the circuit theory diagrams of one of existing lithium-ion battery protecting circuit;
Accompanying drawing 4 is the circuit theory diagrams of the embodiment of the invention 1, and accompanying drawing 5 is the circuit theory diagrams of the embodiment of the invention 2,
Accompanying drawing 6 is the circuit theory diagrams of the embodiment of the invention 3, and accompanying drawing 7 is the circuit theory diagrams of the embodiment of the invention 4,
Accompanying drawing 8 is the circuit theory diagrams of the embodiment of the invention 5, and accompanying drawing 9 is the circuit theory diagrams of the embodiment of the invention 6,
Accompanying drawing 10 is the circuit theory diagrams of the embodiment of the invention 7, and accompanying drawing 11 is the circuit theory diagrams of the embodiment of the invention 8,
Accompanying drawing 12 is the circuit theory diagrams of the embodiment of the invention 9, and accompanying drawing 13 is the circuit theory diagrams of the embodiment of the invention 10,
Accompanying drawing 14 is the circuit theory diagrams of the embodiment of the invention 11, and accompanying drawing 15 is the circuit theory diagrams of the embodiment of the invention 12,
Accompanying drawing 16 is the circuit theory diagrams of the embodiment of the invention 13, and accompanying drawing 17 is the circuit theory diagrams of the embodiment of the invention 14,
Accompanying drawing 18 is the circuit theory diagrams of the embodiment of the invention 15, and accompanying drawing 19 is the circuit theory diagrams of the embodiment of the invention 16,
Accompanying drawing 20 is the circuit theory diagrams of the embodiment of the invention 17, and accompanying drawing 21 is the circuit theory diagrams of the embodiment of the invention 18,
Accompanying drawing 22 is the circuit theory diagrams of the embodiment of the invention 19, and accompanying drawing 23 is the circuit theory diagrams of the embodiment of the invention 20,
Accompanying drawing 24 is the circuit theory diagrams of the embodiment of the invention 21;
Coding in the accompanying drawing is respectively: BATT+: the cathode output end of battery; BATT-: the cathode output end of battery; FS: the anti-hydrophone of novel electronic circuit be subjected to the water induction end; FU: fuse; U1: battery protection integrated circuit (IC); T: field effect transistor; G: effect tube grid; D: effect pipe drain electrode; S: effect pipe source electrode; Q1: transistor; B: the base stage of transistor; C: the collector electrode of transistor; E: the emitter of transistor; R1: first resistance; R2: second resistance; R3: the 3rd resistance; R4: the 4th resistance; C1: first electric capacity; C2: second electric capacity; The responsive discharging current of CS:U1 detects input, GND: the power cathode input of battery protection integrated circuit U1, and the positive source input of VCC:U1, the mistake of OD:U1 is put the protection control end, the over-charge protective control end of OC:U1; E: battery; V1: first field effect transistor of battery protecting circuit, G1: first fet gate, D1: the drain electrode of first field effect transistor, S1: the first field effect transistor source electrode, VD1: the protection diode of first field effect transistor; V2: second field effect transistor, G2: second fet gate, D2: the drain electrode of second field effect transistor, S2: the second field effect transistor source electrode, VD2: the protection diode of second field effect transistor.
Five, embodiment:
The present invention is not subjected to the restriction of following embodiment, can determine concrete execution mode according to technical scheme of the present invention and actual conditions.
Below in conjunction with embodiment and accompanying drawing the present invention is further described:
Embodiment 4, and shown in accompanying drawing 5 and 7, embodiment 4 is with the difference of embodiment 1: the transistor Q1 at embodiment 4 adopts the positive-negative-positive transistor.
Embodiment 6, and shown in accompanying drawing 5 and 9, embodiment 6 is with the difference of embodiment 3: the transistor Q1 at embodiment 6 adopts the positive-negative-positive transistor, is connected to second capacitor C 2 between the control end 1 of transistor Q1 and the cathode output end BATT+ of battery.
Embodiment 7; shown in accompanying drawing 4 and 10; embodiment 7 is with the difference of embodiment 1: the water circuits for triggering at embodiment 7 comprise field effect transistor T and are subjected to water induction end FS; the output 3 of this field effect transistor T detects input CS with the responsive discharging current of battery protection integrated circuit U1 and is conducted; the input 2 of this field effect transistor T is conducted with the cathode output end BATT+ of battery; the control end 1 of this field effect transistor T is conducted with the water induction end FS that is subjected to of water circuits for triggering; wherein, field effect transistor T adopts N channel field-effect pipe.
Embodiment 8; shown in accompanying drawing 10 and 11; the difference of embodiment 8 and embodiment 7 is: be connected to second capacitor C 2 between the power cathode input GND of the control end 1 of the field effect transistor T of embodiment 8 and battery protection integrated circuit U1, be connected to the 4th resistance R 4 between the input 2 of field effect transistor T and the cathode output end BATT+ of battery.
Embodiment 9; shown in accompanying drawing 11 and 12; embodiment 9 is with the difference of embodiment 8: the water circuits for triggering at embodiment 9 comprise field effect transistor T and are subjected to water induction end FS; the output 3 of this field effect transistor T detects input CS with the responsive discharging current of battery protection integrated circuit U1 and is conducted; the input 2 of this field effect transistor T is conducted with the positive source input VCC of battery protection integrated circuit U1; the water induction end FS that is subjected to of the control end of this field effect transistor T and water circuits for triggering is conducted, and is connected to second capacitor C 2 between the power cathode input GND of the control end 1 of this field effect transistor T and battery protection integrated circuit U1.
Embodiment 10, and shown in accompanying drawing 10 and 13, embodiment 10 is with the difference of embodiment 7: the field effect transistor T at embodiment 10 adopts the P-channel field-effect transistor (PEFT) pipe.
Embodiment 11, and shown in accompanying drawing 11 and 14, embodiment 11 is with the difference of embodiment 8: the field effect transistor T at embodiment 11 adopts the P-channel field-effect transistor (PEFT) pipe, is connected to second capacitor C 2 between the control end 1 of field effect transistor T and the cathode output end BATT+ of battery.
Embodiment 12, and shown in accompanying drawing 12 and 15, embodiment 12 is with the difference of embodiment 9: the field effect transistor T at embodiment 12 adopts the P-channel field-effect transistor (PEFT) pipe, is connected to second capacitor C 2 between the control end 1 of field effect transistor T and the cathode output end BATT+ of battery.
Embodiment 13; as shown in Figure 16; the anti-hydrophone of this novel electronic circuit comprises battery protecting circuit; this battery protecting circuit comprises battery protection integrated circuit U1; the first field effect transistor V1; the cathode output end BATT+ of the second field effect transistor V2 battery and the cathode output end BATT-of battery; the responsive discharging current of battery protection integrated circuit U1 detects input CS and is connected to the water circuits for triggering; the cathode output end BATT-that the responsive discharging current of battery protection integrated circuit U1 detects input CS and battery is conducted; the water circuits for triggering comprise field effect transistor T; transistor Q1 and be subjected to water induction end FS; the input 2 of this field effect transistor T is conducted with the cathode output end BATT+ of battery E; the control end 1 of this field effect transistor T is conducted with the input of triode Q1; be connected to the 4th resistance R 4 between the cathode output end BATT+ of the input of transistor Q1 and battery; the output of the output of transistor Q1 and field effect transistor T is conducted; the water induction end FS that is subjected to of the control end of transistor Q1 and water circuits for triggering is conducted; the output 3 of field effect transistor T is conducted with the cathode output end BATT-of battery E; wherein; field effect transistor T adopts the P-channel field-effect transistor (PEFT) pipe, and transistor Q1 adopts negative-positive-negative transistor.
Embodiment 14, and shown in accompanying drawing 3,16 and 17, the difference of embodiment 14 and embodiment 13 is: embodiment 14 detects at the responsive discharging current of battery protection integrated circuit U1 between the cathode output end BATT-of input CS and battery and is connected to second resistance R 2.
Embodiment 15, and shown in accompanying drawing 17 and 18, embodiment 15 is with the difference of embodiment 14: the output 3 of the field effect transistor T of embodiment 15 detects input CS with the responsive discharging current of battery protection integrated circuit U1 and is conducted.
Embodiment 16, and shown in accompanying drawing 17 and 19, embodiment 16 is with the difference of embodiment 14: the transistor Q1 of embodiment 16 adopts the positive-negative-positive transistor.
Embodiment 17, and shown in accompanying drawing 18 and 20, embodiment 17 is with the difference of embodiment 15: the transistor Q1 of embodiment 17 adopts the positive-negative-positive transistor.
Embodiment 18, shown in accompanying drawing 17 and 21, embodiment 18 is with the difference of embodiment 14: the water circuits for triggering of embodiment 18 comprise field effect transistor T, transistor Q1 and be subjected to water induction end FS, the input 2 of this field effect transistor T is conducted with the cathode output end BATT+ of battery E, the control end 1 of this field effect transistor T is conducted with the output of transistor Q1, the cathode output end BATT+ of the input of transistor Q1 and battery is conducted, be connected to the 4th resistance R 4 between the output 3 of the output of transistor Q1 and field effect transistor T, the water induction end FS that is subjected to of the control end of transistor Q1 and water circuits for triggering is conducted, the output 3 of field effect transistor T is conducted with the cathode output end BATT-of battery, wherein, field effect transistor T adopts N channel field-effect pipe, and transistor Q1 adopts negative-positive-negative transistor.
Embodiment 19, and shown in accompanying drawing 21 and 22, embodiment 19 is with the difference of embodiment 18: the output 3 of the field effect transistor T of embodiment 19 detects input CS with the responsive discharging current of battery protection integrated circuit U1 and is conducted.
Embodiment 20, and shown in accompanying drawing 19 and 21, embodiment 20 is with the difference of embodiment 18: the transistor Q1 of embodiment 18 adopts the positive-negative-positive transistor.
Embodiment 21, and shown in accompanying drawing 22 and 24, embodiment 21 is with the difference of embodiment 19: the transistor Q1 of embodiment 21 adopts the positive-negative-positive transistor.
The present invention is specially adapted to do electronics waterproof lithium-ion battery, wherein: battery protection integrated circuit U1 preferably adopts lithium-ion battery protection integrated circuit, it can adopt S8241 and S8261 series, the 3077 beautiful series of U.S. or the BQ2057 series of TI etc. of the R5426 of DW01 series, Ricoh and R5421 series, Seiko, for example: AIC1811, DW01, AOJ2, GAQB, GAAJ, GAAL, GAAM, B1A4, BQ2057,3077 etc.; Field effect transistor can adopt 9926 series, 5N series, 7900 series or 8601 series etc.
The present invention can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations, makes to have stronger adaptability and best implementation result.
Claims (11)
1. a novel electronic circuit is prevented hydrophone; comprise battery protecting circuit; this battery protecting circuit comprises the cathode output end of battery protection integrated circuit, first field effect transistor, second field effect transistor, battery and the cathode output end of battery, and the responsive discharging current that it is characterized in that the battery protection integrated circuit detects the cathode output end that input is connected to water circuits for triggering or battery and is connected to the water circuits for triggering.
2. novel electronic circuit according to claim 1 is prevented hydrophone, it is characterized in that the responsive discharging current detection input of battery protection integrated circuit and the cathode output end of battery are conducted; Perhaps, be connected to second resistance between the cathode output end of the responsive discharging current detection input of battery protection integrated circuit and battery.
3. novel electronic circuit according to claim 2 is prevented hydrophone; it is characterized in that the water circuits for triggering comprise is subjected to water induction end and transistor or field effect transistor; and the responsive discharging current detection input of the output of transistor or field effect transistor and battery protection integrated circuit is conducted; the water induction end that is subjected to of the control end of transistor or field effect transistor and water circuits for triggering is conducted, and the input of transistor or field effect transistor and the cathode output end of battery are conducted.
4. novel electronic circuit according to claim 2 is prevented hydrophone; it is characterized in that the water circuits for triggering comprise is subjected to water induction end and transistor or field effect transistor; and the responsive discharging current detection input of the output of transistor or field effect transistor and battery protection integrated circuit is conducted; the water induction end that is subjected to of the control end of transistor or field effect transistor and water circuits for triggering is conducted, and the positive source input of the input of transistor or field effect transistor and battery protection integrated circuit is conducted.
5. according to the anti-hydrophone of claim 3 or 4 described novel electronic circuits, it is characterized in that being connected to second electric capacity between the power cathode input of the control end of transistor or field effect transistor and battery protection integrated circuit; Perhaps, be connected to second electric capacity between the electrode input end of the control end of transistor or field effect transistor and battery; Or/and, be connected to the 4th resistance between the input of this transistor and the cathode output end of battery.
6. novel electronic circuit according to claim 2 is prevented hydrophone, it is characterized in that the water circuits for triggering comprise field effect transistor, transistor and be subjected to the water induction end, the input of this field effect transistor and the cathode output end of battery are conducted, the control end of this field effect transistor and the input of triode are conducted, be connected to the 4th resistance between the input of transistor and the cathode output end of battery, the output of transistor and the output of field effect transistor are conducted, the water induction end that is subjected to of the control end of transistor and water circuits for triggering is conducted, and the output of field effect transistor and the cathode output end of battery are conducted.
7. novel electronic circuit according to claim 2 is prevented hydrophone; it is characterized in that the water circuits for triggering comprise field effect transistor; transistor and be subjected to the water induction end; the input of this field effect transistor and the cathode output end of battery are conducted; the control end of this field effect transistor and the input of transistor are conducted; be connected to the 4th resistance between the input of transistor and the cathode output end of battery; the output of transistor and the output of field effect transistor are conducted; the water induction end that is subjected to of the control end of transistor and water circuits for triggering is conducted, and the responsive discharging current of the output of field effect transistor and battery protection integrated circuit detects input and is conducted.
8. novel electronic circuit according to claim 2 is prevented hydrophone, it is characterized in that the water circuits for triggering comprise field effect transistor, transistor and be subjected to the water induction end, the input of this field effect transistor and the cathode output end of battery are conducted, the control end of this field effect transistor and the output of transistor are conducted, the input of transistor and the cathode output end of battery are conducted, be connected to the 4th resistance between the output of transistor and the cathode output end of battery, the water induction end that is subjected to of the control end of transistor and water circuits for triggering is conducted, and the output of field effect transistor and the cathode output end of battery are conducted.
9. novel electronic circuit according to claim 2 is prevented hydrophone; it is characterized in that the water circuits for triggering comprise field effect transistor; transistor and be subjected to the water induction end; the input of this field effect transistor and the cathode output end of battery are conducted; the control end of this field effect transistor and the output of transistor are conducted; the input of transistor and the cathode output end of battery are conducted; be connected to the 4th resistance between the input of transistor and the cathode output end of battery; the water induction end that is subjected to of the control end of transistor and water circuits for triggering is conducted, and the responsive discharging current of the output of field effect transistor and battery protection integrated circuit detects input and is conducted.
10. according to claim 1 or the anti-hydrophone of 2 or 3 or 4 or 6 or 7 or 8 or 9 described novel electronic circuits, it is characterized in that transistor adopts negative-positive-negative transistor or positive-negative-positive transistor; Or/and field effect transistor T adopts P-channel field-effect transistor (PEFT) pipe or N channel field-effect pipe.
11. novel electronic circuit according to claim 5 is prevented hydrophone, it is characterized in that transistor adopts negative-positive-negative transistor or positive-negative-positive transistor; Or/and field effect transistor T adopts P-channel field-effect transistor (PEFT) pipe or N channel field-effect pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410039817 CN1571277A (en) | 2003-03-18 | 2004-03-18 | Novel electronic circuit waterproof device |
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| CN03120393 | 2003-03-18 | ||
| CN03120393.0 | 2003-03-18 | ||
| CN 200410039817 CN1571277A (en) | 2003-03-18 | 2004-03-18 | Novel electronic circuit waterproof device |
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| CN1571277A true CN1571277A (en) | 2005-01-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101945534A (en) * | 2010-09-01 | 2011-01-12 | 惠州Tcl移动通信有限公司 | Method and circuit for protecting circuit board in case of water inflow of mobile terminal and mobile terminal |
| CN101969486A (en) * | 2010-10-13 | 2011-02-09 | 华为终端有限公司 | Method and circuit for preventing mobile terminal from waterlogged damage and mobile terminal |
| CN102245973A (en) * | 2008-12-15 | 2011-11-16 | 皇家飞利浦电子股份有限公司 | Ultrasound apparatus with humidity protection |
| CN103092711A (en) * | 2011-10-31 | 2013-05-08 | 联想(北京)有限公司 | Power-off control method and system for electronic equipment and start control method and system for electronic equipment |
| CN103580260A (en) * | 2012-07-19 | 2014-02-12 | 飞毛腿电子（深圳）有限公司 | Portable mobile power supply |
| CN105743067A (en) * | 2016-04-28 | 2016-07-06 | 深圳源创智能照明有限公司 | Self-activation circuit and battery protection system with same |
| CN106374437A (en) * | 2015-07-20 | 2017-02-01 | 江苏爱福特科技开发有限公司 | Battery protection circuit |
| CN106451647A (en) * | 2016-11-08 | 2017-02-22 | 谢乐 | Protective circuit |
| CN106603760A (en) * | 2016-12-06 | 2017-04-26 | 上海斐讯数据通信技术有限公司 | Water-in automatic protection circuit and method for achieving same |
| CN108199351A (en) * | 2017-12-20 | 2018-06-22 | 西安易朴通讯技术有限公司 | A kind of terminal |
| CN108366146A (en) * | 2018-03-12 | 2018-08-03 | 曹颖鹏 | A kind of mobile phone water proof type circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102245973A (en) * | 2008-12-15 | 2011-11-16 | 皇家飞利浦电子股份有限公司 | Ultrasound apparatus with humidity protection |
| CN101945534B (en) * | 2010-09-01 | 2012-12-19 | 惠州Tcl移动通信有限公司 | Method and circuit for protecting circuit board in case of water inflow of mobile terminal and mobile terminal |
| CN101945534A (en) * | 2010-09-01 | 2011-01-12 | 惠州Tcl移动通信有限公司 | Method and circuit for protecting circuit board in case of water inflow of mobile terminal and mobile terminal |
| CN101969486B (en) * | 2010-10-13 | 2013-09-11 | 华为终端有限公司 | Method and circuit for preventing mobile terminal from waterlogged damage and mobile terminal |
| CN101969486A (en) * | 2010-10-13 | 2011-02-09 | 华为终端有限公司 | Method and circuit for preventing mobile terminal from waterlogged damage and mobile terminal |
| CN103092711B (en) * | 2011-10-31 | 2016-03-30 | 联想(北京)有限公司 | The circuit breaking controlling method of electronic equipment and system and startup control method and system |
| CN103092711A (en) * | 2011-10-31 | 2013-05-08 | 联想(北京)有限公司 | Power-off control method and system for electronic equipment and start control method and system for electronic equipment |
| CN103580260A (en) * | 2012-07-19 | 2014-02-12 | 飞毛腿电子（深圳）有限公司 | Portable mobile power supply |
| CN103580260B (en) * | 2012-07-19 | 2015-10-28 | 飞毛腿电子（深圳）有限公司 | A kind of Portable power source |
| CN106374437A (en) * | 2015-07-20 | 2017-02-01 | 江苏爱福特科技开发有限公司 | Battery protection circuit |
| CN105743067A (en) * | 2016-04-28 | 2016-07-06 | 深圳源创智能照明有限公司 | Self-activation circuit and battery protection system with same |
| WO2017185884A1 (en) * | 2016-04-28 | 2017-11-02 | 深圳源创智能照明有限公司 | Self-activating circuit and battery protection system including same |
| CN106451647A (en) * | 2016-11-08 | 2017-02-22 | 谢乐 | Protective circuit |
| CN106603760A (en) * | 2016-12-06 | 2017-04-26 | 上海斐讯数据通信技术有限公司 | Water-in automatic protection circuit and method for achieving same |
| CN108199351A (en) * | 2017-12-20 | 2018-06-22 | 西安易朴通讯技术有限公司 | A kind of terminal |
| CN108366146A (en) * | 2018-03-12 | 2018-08-03 | 曹颖鹏 | A kind of mobile phone water proof type circuit |
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