CN104104065A - Battery voltage indication and protection circuit - Google Patents
Battery voltage indication and protection circuit Download PDFInfo
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- CN104104065A CN104104065A CN201310125496.0A CN201310125496A CN104104065A CN 104104065 A CN104104065 A CN 104104065A CN 201310125496 A CN201310125496 A CN 201310125496A CN 104104065 A CN104104065 A CN 104104065A
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Abstract
An embodiment of the invention discloses a battery voltage indication and protection circuit. The battery voltage indication and protection circuit includes triodes Q1 and Q2, a voltage-regulator tube ZD1, a diode D2, a relay K, a battery pack BT, display lamps LED1 and LED2, and resistors R1, R2, R3 and R4; a base electrode of Q1 is connected with one end of R1 and a positive electrode of ZD1; a collector electrode of Q1 is connected with a negative electrode of LED1; an emitting electrode of Q1 is connected with one end of R2 and one end of R3; a base electrode of Q2 is connected with the other end of R3; a collector electrode of Q2 is connected with a positive electrode of D1, a fourth pin of K and one end of R4; an emitting electrode of Q2 is connected with a negative electrode of BT, the other end of R1, the other end of R2, a negative electrode of LED2 and one end of a load light source drive circuit; a negative electrode of ZD1 is connected with a positive electrode of BT, a positive electrode of LED1, a negative electrode of D1, a first pin of K and a second pin of K, and a third pin of K is connected with the other end of the load light source drive circuit; and a positive electrode of LED2 is connected with the other end of R4. The battery voltage indication and protection circuit in the embodiment of the invention has the advantages of simple structure, convenient control and low cost.
Description
Technical field
The present invention relates to a kind of illumination and drive battery protection field, relate in particular to a kind of cell voltage indication and protective circuit.
Background technology
The battery discharge prevention circuit (Chinese Patent Application No. 201010147371.4) of a kind of energy of documents self-locking; a kind of D.C. regulated power supply that exchanges adjustment type of the present invention, is comprised of reference circuit, undervoltage detection circuit, charging detecting circuit, protection latching circuit, five parts of protection output circuit.Undervoltage detection circuit detects battery low pressure output battery under-voltage signal; trigger protection latching circuit forms from lock control protection output circuit and turn-offs output; when battery is charged, charging detecting circuit detects output charging signals trigger protection latching circuit solution lock control protection output circuit and opens output.The present invention, owing to having used accurate constant pressure source, therefore can realize accurate under-voltage detection; Circuit just triggers at once latching circuit switching off load discharge loop when battery undervoltage being detected.And only after battery being charged by this circuit, just can solve the self-locking of circuit; Therefore, this circuit has played protection very reliably to the over-discharge can of battery.
Foregoing circuit device is many, and circuit is more complicated, and cost is higher.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, a kind of cell voltage indication and protective circuit are provided.By low-power light-emitting diode, carry out capable of indicating battery electric quantity; without the flicker with powerful illuminating source, show battery undervoltage, this circuit also has battery under-voltage protection function, when under-voltage lamp is bright; under-voltage protection function starts, protection battery over-discharge can and damaging.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of cell voltage indication and protective circuit, comprises triode Q1, Q2, voltage-stabiliser tube ZD1, diode D1, relay K, battery pack BT, display lamp LED1, LED2, resistance R 1, R2, R3, R4; Q1 base stage is connected with R1 one end and ZD1 positive pole respectively; Q1 collector electrode is connected with LED1 negative pole; Q1 emitter is connected with R2 one end and R3 one end respectively; Q2 base stage is connected with the R3 other end; Q2 collector electrode is connected with D1 positive pole, K the 4th pin and R4 one end respectively; Q2 emitter is connected with BT negative pole, the R1 other end, the R2 other end, LED2 negative pole and load light source drive circuit one end respectively; ZD1 negative pole respectively anodal with BT, LED1 is anodal, D1 negative pole, K the 1st pin and K the 2nd pin are connected, K the 3rd pin is connected with the load light source drive circuit other end; LED2 is anodal to be connected with the R4 other end.
Further, also comprise capacitor C 1; C1 positive pole is connected with D1 positive pole, Q2 collector electrode, K the 4th pin and R4 one end respectively; C1 negative pole is connected with BT negative pole, R1 one end, R2 one end, Q2 emitter and LED2 negative pole respectively.
Further, when battery electric quantity is sufficient, cell voltage is higher, and now voltage makes Q1 conducting by ZD1 and R1 dividing potential drop for Q1 base stage provides high level, and the bright demonstration green glow of LED1 represents that battery electric quantity is normal; While Q1 conducting R2 dividing potential drop, it is high level that R3 current limliting makes Q2 base stage, and Q2 conducting makes relay K obtain electric adhesive, is load light source drive circuitry, and simultaneously because Q2 conducting makes LED2 by short circuit, LED2 extinguishes.
Further; when battery electric quantity is during lower than ZD1 and R1 detected value, R1 both end voltage cannot make Q1 conducting, and now LED1 extinguishes; Q1 disconnects Q2 is also disconnected; relay K dead electricity disconnects, and battery cannot, to load light source drive circuitry, play under-voltage protection effect; now; voltage is that LED2 powers by relay K coil and R4, and LED2 sends ruddiness and represents battery undervoltage, needs charging.
Further, described Q1 model is 2SC945, and Q2 model is 2N5551.
Further, described ZD1 model is IN4740A.
Implement the embodiment of the present invention; there is following beneficial effect: the present invention carrys out capable of indicating battery electric quantity by low-power light-emitting diode; without the flicker with powerful illuminating source, show battery undervoltage; this circuit also has battery under-voltage protection function, and when under-voltage lamp is bright, under-voltage protection function starts; protect battery over-discharge can and damage; and simple in structure, it is convenient, with low cost to control.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 be the indication of a kind of cell voltage of the present invention and protective circuit schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, a kind of cell voltage indication and protective circuit, comprise triode Q1, Q2, voltage-stabiliser tube ZD1, diode D1, relay K, battery pack BT, display lamp LED1, LED2, resistance R 1, R2, R3, R4; Q1 base stage is connected with R1 one end and ZD1 positive pole respectively; Q1 collector electrode is connected with LED1 negative pole; Q1 emitter is connected with R2 one end and R3 one end respectively; Q2 base stage is connected with the R3 other end; Q2 collector electrode is connected with D1 positive pole, K the 4th pin and R4 one end respectively; Q2 emitter is connected with BT negative pole, the R1 other end, the R2 other end, LED2 negative pole and load light source drive circuit one end respectively; ZD1 negative pole respectively anodal with BT, LED1 is anodal, D1 negative pole, K the 1st pin and K the 2nd pin are connected, K the 3rd pin is connected with the load light source drive circuit other end; LED2 is anodal to be connected with the R4 other end.
Also comprise capacitor C 1; C1 positive pole is connected with D1 positive pole, Q2 collector electrode, K the 4th pin and R4 one end respectively; C1 negative pole is connected with BT negative pole, R1 one end, R2 one end, Q2 emitter and LED2 negative pole respectively.
When battery electric quantity is sufficient, cell voltage is higher, and now voltage makes Q1 conducting by ZD1 and R1 dividing potential drop for Q1 base stage provides high level, and the bright demonstration green glow of LED1 represents that battery electric quantity is normal; While Q1 conducting R2 dividing potential drop, it is high level that R3 current limliting makes Q2 base stage, and Q2 conducting makes relay K obtain electric adhesive, is load light source drive circuitry, and simultaneously because Q2 conducting makes LED2 by short circuit, LED2 extinguishes.
When battery electric quantity is during lower than ZD1 and R1 detected value; R1 both end voltage cannot make Q1 conducting; now LED1 extinguishes, and Q1 disconnects Q2 is also disconnected, and relay K dead electricity disconnects; battery cannot be to load light source drive circuitry; play under-voltage protection effect, now, voltage is that LED2 powers by relay K coil and R4; LED2 sends ruddiness and represents battery undervoltage, needs charging.
Described Q1 model is 2SC945, and Q2 model is 2N5551.
Described ZD1 model is IN4740A.
The present invention carrys out capable of indicating battery electric quantity by low-power light-emitting diode; without the flicker with powerful illuminating source, show battery undervoltage; this circuit also has battery under-voltage protection function; when under-voltage lamp is bright; under-voltage protection function starts, protection battery over-discharge can and damaging, and simple in structure; it is convenient, with low cost to control.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.
Claims (6)
1. cell voltage indication and a protective circuit, is characterized in that, comprises triode Q1, Q2, voltage-stabiliser tube ZD1, diode D1, relay K, battery pack BT, display lamp LED1, LED2, resistance R 1, R2, R3, R4; Q1 base stage is connected with R1 one end and ZD1 positive pole respectively; Q1 collector electrode is connected with LED1 negative pole; Q1 emitter is connected with R2 one end and R3 one end respectively; Q2 base stage is connected with the R3 other end; Q2 collector electrode is connected with D1 positive pole, K the 4th pin and R4 one end respectively; Q2 emitter is connected with BT negative pole, the R1 other end, the R2 other end, LED2 negative pole and load light source drive circuit one end respectively; ZD1 negative pole respectively anodal with BT, LED1 is anodal, D1 negative pole, K the 1st pin and K the 2nd pin are connected, K the 3rd pin is connected with the load light source drive circuit other end; LED2 is anodal to be connected with the R4 other end.
2. cell voltage indication according to claim 1 and protective circuit, is characterized in that, also comprises capacitor C 1; C1 positive pole is connected with D1 positive pole, Q2 collector electrode, K the 4th pin and R4 one end respectively; C1 negative pole is connected with BT negative pole, R1 one end, R2 one end, Q2 emitter and LED2 negative pole respectively.
3. cell voltage indication according to claim 1 and protective circuit, is characterized in that, when battery electric quantity is sufficient, cell voltage is higher, now voltage makes Q1 conducting by ZD1 and R1 dividing potential drop for Q1 base stage provides high level, and the bright demonstration green glow of LED1 represents that battery electric quantity is normal; While Q1 conducting R2 dividing potential drop, it is high level that R3 current limliting makes Q2 base stage, and Q2 conducting makes relay K obtain electric adhesive, is load light source drive circuitry, and simultaneously because Q2 conducting makes LED2 by short circuit, LED2 extinguishes.
4. cell voltage according to claim 1 indication and protective circuit, is characterized in that, when battery electric quantity is during lower than ZD1 and R1 detected value; R1 both end voltage cannot make Q1 conducting; now LED1 extinguishes, and Q1 disconnects Q2 is also disconnected, and relay K dead electricity disconnects; battery cannot be to load light source drive circuitry; play under-voltage protection effect, now, voltage is that LED2 powers by relay K coil and R4; LED2 sends ruddiness and represents battery undervoltage, needs charging.
5. cell voltage indication according to claim 1 and protective circuit, is characterized in that, described Q1 model is 2SC945, and Q2 model is 2N5551.
6. cell voltage indication according to claim 1 and protective circuit, is characterized in that, described ZD1 model is IN4740A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310125496.0A CN104104065A (en) | 2013-04-11 | 2013-04-11 | Battery voltage indication and protection circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310125496.0A CN104104065A (en) | 2013-04-11 | 2013-04-11 | Battery voltage indication and protection circuit |
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| CN104104065A true CN104104065A (en) | 2014-10-15 |
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| CN201310125496.0A Pending CN104104065A (en) | 2013-04-11 | 2013-04-11 | Battery voltage indication and protection circuit |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678318A (en) * | 2015-03-05 | 2015-06-03 | 黄宇嵩 | Battery performance detector |
| CN107221913A (en) * | 2017-06-19 | 2017-09-29 | 江苏理工学院 | A kind of low-power dissipation protection circuit based on Ni-MH battery |
| CN108375695A (en) * | 2018-05-14 | 2018-08-07 | 重庆桦哲科技有限公司 | Charge the economize on electricity electroscope of cell monitoring |
| CN109131697A (en) * | 2018-08-20 | 2019-01-04 | 江苏金彭车业有限公司 | A kind of brake control system and control method for electric vehicle |
| CN110994559A (en) * | 2019-12-06 | 2020-04-10 | 郑州嘉晨电器有限公司 | Power module output end short-circuit protection circuit |
| CN112217499A (en) * | 2020-11-06 | 2021-01-12 | 成都扭了么网络科技有限公司 | Drive control apparatus, method and storage medium for a plurality of electromechanical interlocks |
| WO2021232444A1 (en) * | 2020-05-20 | 2021-11-25 | 南京盖乐普电子科技有限公司 | Charging protection circuit for juicer |
| CN113933716A (en) * | 2021-09-29 | 2022-01-14 | 深圳市昂佳科技有限公司 | Ultra-low standby power consumption nanoamp wide voltage range LED battery power indicating system |
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| CN2049423U (en) * | 1989-06-16 | 1989-12-13 | 李林和 | Combined protective device of color tv set and refrigerator |
| CN2222978Y (en) * | 1995-04-08 | 1996-03-20 | 刘建定 | General electronic battery cell for motorcycle |
| CN201149989Y (en) * | 2008-01-17 | 2008-11-12 | 刘喜龙 | Universal phase-lacking, phase sequence protector |
| CN201467011U (en) * | 2009-06-26 | 2010-05-12 | 山东科明太阳能光伏有限公司 | Solar mobile power supply |
| CN102684143A (en) * | 2012-06-05 | 2012-09-19 | 黄宇嵩 | Over-voltage or under-voltage protective module for DC power supply |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049423U (en) * | 1989-06-16 | 1989-12-13 | 李林和 | Combined protective device of color tv set and refrigerator |
| CN2222978Y (en) * | 1995-04-08 | 1996-03-20 | 刘建定 | General electronic battery cell for motorcycle |
| CN201149989Y (en) * | 2008-01-17 | 2008-11-12 | 刘喜龙 | Universal phase-lacking, phase sequence protector |
| CN201467011U (en) * | 2009-06-26 | 2010-05-12 | 山东科明太阳能光伏有限公司 | Solar mobile power supply |
| CN102684143A (en) * | 2012-06-05 | 2012-09-19 | 黄宇嵩 | Over-voltage or under-voltage protective module for DC power supply |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678318A (en) * | 2015-03-05 | 2015-06-03 | 黄宇嵩 | Battery performance detector |
| CN107221913A (en) * | 2017-06-19 | 2017-09-29 | 江苏理工学院 | A kind of low-power dissipation protection circuit based on Ni-MH battery |
| CN108375695A (en) * | 2018-05-14 | 2018-08-07 | 重庆桦哲科技有限公司 | Charge the economize on electricity electroscope of cell monitoring |
| CN109131697A (en) * | 2018-08-20 | 2019-01-04 | 江苏金彭车业有限公司 | A kind of brake control system and control method for electric vehicle |
| CN110994559A (en) * | 2019-12-06 | 2020-04-10 | 郑州嘉晨电器有限公司 | Power module output end short-circuit protection circuit |
| WO2021232444A1 (en) * | 2020-05-20 | 2021-11-25 | 南京盖乐普电子科技有限公司 | Charging protection circuit for juicer |
| CN112217499A (en) * | 2020-11-06 | 2021-01-12 | 成都扭了么网络科技有限公司 | Drive control apparatus, method and storage medium for a plurality of electromechanical interlocks |
| CN113933716A (en) * | 2021-09-29 | 2022-01-14 | 深圳市昂佳科技有限公司 | Ultra-low standby power consumption nanoamp wide voltage range LED battery power indicating system |
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Application publication date: 20141015 |
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