CN204858532U - Mobile phone lithium battery crosses to fill puts protection circuit - Google Patents
Mobile phone lithium battery crosses to fill puts protection circuit Download PDFInfo
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- CN204858532U CN204858532U CN201520457428.9U CN201520457428U CN204858532U CN 204858532 U CN204858532 U CN 204858532U CN 201520457428 U CN201520457428 U CN 201520457428U CN 204858532 U CN204858532 U CN 204858532U
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Abstract
The utility model discloses a mobile phone lithium battery crosses to fill puts protection circuit, include power supply circuit, switching circuit, cross the discharge protection circuit and cross the charge protection circuit, wherein: the power supply circuit includes and carries out the transformer X1 that steps down to alternating current power supply, with transformer X1 electric connection's bridge rectifier BR1, carries out filtering and bridge rectifier BR1 electric connection's electric capacity C1 to the electric current to reach the stabiliser IC1 with bridge rectifier BR1 electric connection. Set up stabiliser IC1 in the power supply circuit, switch circuit arrangement triode T1 and relay RL1, set up operational amplifier IC2 in crossing the charge protection circuit, triode T2 and relay RL2, and cross discharge protection circuit arrangement operational amplifier IC3, triode T3 and relay RL3, thereby make the lithium cell can not reduce its life because of overcharging and can not reduce its capacity and life because of the overdischarge, fine guard action has been played to the lithium cell.
Description
Technical field
The utility model relates to technical field of lithium batteries, more particularly relates to a kind of cellular li-ion battery and overcharges discharge protection circuit.
Background technology
Battery discharges the electricity of internal reservoir, and after voltage reaches certain value, continuing electric discharge will cause overdischarge, usually determines discharge cut-off voltage according to discharging current.Battery is crossed to put to cross to the consequence of bringing on a disaster property of battery, particularly big current and is put, or battery impact of being repeatedly excessively rivals in a contest is larger.Generally speaking, overdischarge can make inner pressure of battery raise, and both positive and negative polarity active material invertibity is damaged, even if charging also can only partly recover, capacity also has obvious decay, and the useful life of battery is shortened, and overcharge can cause shorten the useful life of battery equally in addition.
Cellular li-ion battery of the prior art does not generally all have overcharge and over-discharge protection circuit, makes the life-span of cellular li-ion battery very short like this.
Utility model content
For deficiency of the prior art; the technical problems to be solved in the utility model there are provided a kind of cellular li-ion battery and overcharges discharge protection circuit; make the cellular li-ion battery life-span short to solve in prior art cellular li-ion battery because of overcharge and overdischarge, the problem of premature failure.
For solving the problems of the technologies described above, the utility model is realized by following scheme: a kind of cellular li-ion battery overcharges discharge protection circuit, it is characterized in that: comprise power-supply circuit, commutation circuit, additives for overcharge protection circuit and over-discharge protection circuit, wherein:
Described power-supply circuit comprises transformer X1 AC power being carried out to step-down, the bridge rectifier BR1 be electrically connected with transformer X1, the electric capacity C1 that filtering and bridge rectifier BR1 be electrically connected is carried out to electric current, and the pressurizer IC1 be electrically connected with bridge rectifier BR1;
Described commutation circuit comprises triode T1, relay R L1, resistance R1, resistance R2, diode D1, LED 1 and battery B, the base stage of triode T1 connects described pressurizer IC1 by resistance R1, the collector electrode of triode T1 connects described pressurizer IC1 respectively by relay R L1, described pressurizer IC1 is connected by the circuit after diode D1 is connected described pressurizer IC1 and connected with resistance R26 by LED 1, the emitter of triode T1 connects pressurizer IC1 respectively, described electric capacity C1, described bridge rectifier BR1 and described additives for overcharge protection circuit, the emitter of triode T1 also connects the normally-closed contact of relay R L1 by battery B,
Described additives for overcharge protection circuit comprises operational amplifier IC2, relay R L2, resistance R3, resistance R4, resistance R5, resistance R7, resistance R8, voltage stabilizing didoe ZD1, diode D2, LED 2 and triode T2, the collector electrode of triode T2 is respectively by relay R L2, by diode D2 with connected with LED 2 by resistance R7 after circuit be connected described resistance R1 and pressurizer IC1, the base stage of triode T2 connects the port 6 calculating amplifier IC2 by resistance R6, the emitter of triode T2 connects the port 4 calculating amplifier IC2 respectively, one end of voltage stabilizing didoe ZD1 and one end of resistance R5, the other end of voltage stabilizing didoe ZD1 connects described resistance R1 and pressurizer IC1 by resistance R3, the other end of resistance R5 connects normally-closed contact and the over-discharge protection circuit of relay R L2 by resistance R4, node between the port 7 contact resistance R3 of operational amplifier IC2 and resistance R7, the port 2 of operational amplifier IC2 connects the node between voltage stabilizing didoe ZD1 and resistance R3, the node between the port 3 contact resistance R5 of operational amplifier IC2 and resistance R4,
Described over-discharge protection circuit comprises operational amplifier IC3, relay R L3, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, voltage stabilizing didoe ZD2, diode D3, LED 3 and triode T3, the collector electrode of triode T3 is respectively by relay R L3, the node between the normally-closed contact of described relay R L1 and described battery B is connected by diode D3 with by the circuit after resistance R12 connects with LED 3, the base stage of triode T3 passes through the port 6 of resistance R11 concatenation operation amplifier IC3, the port 4 of the emitter difference concatenation operation amplifier IC3 of triode T3, one end of voltage stabilizing didoe ZD2 and one end of resistance R9, the other end of voltage stabilizing didoe ZD2 connects described relay R L1 by resistance R10, the other end of resistance R9 connects and connects described additives for overcharge protection circuit by resistance R8, node between the port 7 contact resistance R8 of operational amplifier IC3 and resistance R10, the port 2 of operational amplifier IC3 connects the node between voltage stabilizing didoe and resistance R10, node between the port 3 contact resistance R9 of operational amplifier IC3 and resistance R8, the emitter of triode T3 connects the normally-closed contact of relay R L1 more also connected the normally-closed contact of relay R L3 by load after.
Further, the model of described pressurizer IC1 is 7806, and it is provided with input 1, output 3 and earth terminal 2.
Further, the model of described operational amplifier IC2 and operational amplifier IC3 is all CA3140.
Further, the model of described triode T1 and triode T2 is all BC548, and the model of described triode T3 is BC558.
Further, the model of described diode D1, diode D2 and diode D3 is all IN4007.
The beneficial effects of the utility model are:
Cellular li-ion battery of the present utility model overcharges discharge protection circuit, by arranging power-supply circuit, commutation circuit, additives for overcharge protection circuit and over-discharge protection circuit, and pressurizer IC1 is set in power-supply circuit, in commutation circuit, triode T1 and relay R L1 is set, operational amplifier IC2 is set in additives for overcharge protection circuit, triode T2 and relay R L2, and operational amplifier IC3 is set in over-discharge protection circuit, triode T3 and relay R L3, thus make lithium battery can not reduce its useful life because of overcharge and its capacity and useful life can not reduced because of overdischarge, lithium battery is played a very good protection.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams that the utility model cellular li-ion battery overcharges discharge protection circuit.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is explained in detail.
As shown in Figure 1, a kind of cellular li-ion battery overcharges discharge protection circuit, comprises power-supply circuit 10, commutation circuit 20, additives for overcharge protection circuit 30 and over-discharge protection circuit 40, wherein:
Power-supply circuit 10 comprises transformer X1 AC power being carried out to step-down, the bridge rectifier BR1 be electrically connected with transformer X1, the electric capacity C1 that filtering and bridge rectifier BR1 be electrically connected is carried out to electric current, and the pressurizer IC1 to be electrically connected with bridge rectifier BR1, the model of pressurizer IC1 is 7806, it is provided with input 1, output 3 and earth terminal 2, and four diode models in bridge rectifier BR1 are IN4004.
Commutation circuit 20 comprises triode T1, relay R L1, resistance R1, resistance R2, diode D1, LED 1 and battery B, the base stage of triode T1 connects pressurizer IC1 by resistance R1, the collector electrode of triode T1 connects pressurizer IC1 respectively by relay R L1, pressurizer IC1 is connected by the circuit after diode D1 is connected pressurizer IC1 and connected with resistance R26 by LED 1, the emitter of triode T1 connects pressurizer IC1 respectively, electric capacity C1, bridge rectifier BR1 and additives for overcharge protection circuit, the emitter of triode T1 is also by battery B(as shown in the figure) connect the normally-closed contact of relay R L1.The model of triode T1 is BC548, and the model of diode D1 is IN4007, and diode D1 protection relay RL1 is from the impact of back electromotive force.
Additives for overcharge protection circuit 30 comprises operational amplifier IC2, relay R L2, resistance R3, resistance R4, resistance R5, resistance R7, resistance R8, voltage stabilizing didoe ZD1, diode D2, LED 2 and triode T2, the collector electrode of triode T2 is respectively by relay R L2, by diode D2 and the circuit contact resistance R1 after being connected with LED 2 by resistance R7 and pressurizer IC1, the base stage of triode T2 connects the port 6 calculating amplifier IC2 by resistance R6, the emitter of triode T2 connects the port 4 calculating amplifier IC2 respectively, one end of voltage stabilizing didoe ZD1 and one end of resistance R5, the other end of voltage stabilizing didoe ZD1 is by resistance R3 contact resistance R1 and pressurizer IC1, the other end of resistance R5 connects normally-closed contact and the over-discharge protection circuit of relay R L2 by resistance R4, node between the port 7 contact resistance R3 of operational amplifier IC2 and resistance R7, the port 2 of operational amplifier IC2 connects the node between voltage stabilizing didoe ZD1 and resistance R3, the node between the port 3 contact resistance R5 of operational amplifier IC2 and resistance R4.The model of operational amplifier IC2 is CA3140, and the model of triode T2 is BC548, and the model of diode D2 is IN4007, and diode D2 protection relay RL2 is from the impact of back electromotive force.
Over-discharge protection circuit 40 comprises operational amplifier IC3, relay R L3, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, voltage stabilizing didoe ZD2, diode D3, LED 3 and triode T3, the collector electrode of triode T3 is respectively by relay R L3, node between the normally-closed contact of relay R L1 and battery B is connected by diode D3 with by the circuit after resistance R12 connects with LED 3, the base stage of triode T3 passes through the port 6 of resistance R11 concatenation operation amplifier IC3, the port 4 of the emitter difference concatenation operation amplifier IC3 of triode T3, one end of voltage stabilizing didoe ZD2 and one end of resistance R9, the other end of voltage stabilizing didoe ZD2 connects relay R L1 by resistance R10, the other end of resistance R9 connects and connects additives for overcharge protection circuit by resistance R8, node between the port 7 contact resistance R8 of operational amplifier IC3 and resistance R10, the port 2 of operational amplifier IC3 connects the node between voltage stabilizing didoe and resistance R10, node between the port 3 contact resistance R9 of operational amplifier IC3 and resistance R8, the emitter of triode T3 connects the normally-closed contact of relay R L1 more also connected the normally-closed contact of relay R L3 by load after.The model of operational amplifier IC3 is CA3140, and the model of triode T3 is BC558, and the model of diode D3 is IN4007, and diode D3 protection relay RL3 is from the impact of back electromotive force.
The AC power (220V) of power supply supply after transformer X1 step-down, bridge rectifier BR1 rectification and electric capacity C1 filtering, then is stable into 6V power supply (as shown in the figure) supply by chip IC.
When AC power is effective, triode T1 conducting, make relay R L1 adhesive, green LED LED1 is luminous, instruction AC power is effective, meanwhile, pressurizer IC1 exports and is connected to load through the normally opened contact N/O of relay R L1 and the normally-closed contact N/C of relay R L3, and 6V battery then starts charging via the normally-closed contact N/C of relay R L2.When AC power lost efficacy, triode T1 ended, and relay R L1 discharges, and result load changes by the normally-closed contact N/C of relay R L1 from 6V powered battery, and now green LED LED1 extinguishes, and instruction AC power does not exist.
When battery generation over-discharge can (lower than 5.5v), voltage on operational amplifier IC3 anti-phase input port 2 is higher than the voltage on its in-phase input end mouth 3, at this moment operational amplifier IC3 exports as electronegative potential, triode T3 conducting, relay R L3 adhesive, load disconnects with 6V battery because contact N/C separates, thus avoids over-discharge can.Meanwhile, LED 3 is luminous, and pilot cell is in over-discharge state.After AC power is recovered, battery starts charging through the contact N/C of relay R L2.When cell voltage reaches 5.5v, the output of operational amplifier IC3 turns back to high potential, and triode T3 ends, and relay R L3 discharges, and load is connected to again the output of pressurizer.
When AC power is effective, and cell voltage is lower than 6.6V, because the voltage on operational amplifier IC2 anti-phase input port 2 is higher than the voltage on in-phase input end mouth 3, the at this moment output of operational amplifier IC2 is electronegative potential, triode T2 ends, and relay R L2 remains on release condition.At this moment battery continues charging by the N/C contact of relay R L2.Once cell voltage reaches 6.6V, the output of operational amplifier IC2 uprises, triode T2 conducting, relay R L2 adhesive, and charging stops.At this moment LED 2 is luminous, and pilot cell is in overcharged state.
The foregoing is only preferred implementation of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. cellular li-ion battery overcharges a discharge protection circuit, it is characterized in that: comprise power-supply circuit (10), commutation circuit (20), additives for overcharge protection circuit (30) and over-discharge protection circuit (40), wherein:
Described power-supply circuit (10) comprises transformer X1 AC power being carried out to step-down, the bridge rectifier BR1 be electrically connected with transformer X1, the electric capacity C1 that filtering and bridge rectifier BR1 be electrically connected is carried out to electric current, and the pressurizer IC1 be electrically connected with bridge rectifier BR1;
Described commutation circuit (20) comprises triode T1, relay R L1, resistance R1, resistance R2, diode D1, LED 1 and battery B, the base stage of triode T1 connects described pressurizer IC1 by resistance R1, the collector electrode of triode T1 connects described pressurizer IC1 respectively by relay R L1, described pressurizer IC1 is connected by the circuit after diode D1 is connected described pressurizer IC1 and connected with resistance R26 by LED 1, the emitter of triode T1 connects pressurizer IC1 respectively, described electric capacity C1, described bridge rectifier BR1 and described additives for overcharge protection circuit, the emitter of triode T1 also connects the normally-closed contact of relay R L1 by battery B,
Described additives for overcharge protection circuit (30) comprises operational amplifier IC2, relay R L2, resistance R3, resistance R4, resistance R5, resistance R7, resistance R8, voltage stabilizing didoe ZD1, diode D2, LED 2 and triode T2, the collector electrode of triode T2 is respectively by relay R L2, by diode D2 with connected with LED 2 by resistance R7 after circuit be connected described resistance R1 and pressurizer IC1, the base stage of triode T2 connects the port 6 calculating amplifier IC2 by resistance R6, the emitter of triode T2 connects the port 4 calculating amplifier IC2 respectively, one end of voltage stabilizing didoe ZD1 and one end of resistance R5, the other end of voltage stabilizing didoe ZD1 connects described resistance R1 and pressurizer IC1 by resistance R3, the other end of resistance R5 connects normally-closed contact and the over-discharge protection circuit of relay R L2 by resistance R4, node between the port 7 contact resistance R3 of operational amplifier IC2 and resistance R7, the port 2 of operational amplifier IC2 connects the node between voltage stabilizing didoe ZD1 and resistance R3, the node between the port 3 contact resistance R5 of operational amplifier IC2 and resistance R4,
Described over-discharge protection circuit (40) comprises operational amplifier IC3, relay R L3, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, voltage stabilizing didoe ZD2, diode D3, LED 3 and triode T3, the collector electrode of triode T3 is respectively by relay R L3, the node between the normally-closed contact of described relay R L1 and described battery B is connected by diode D3 with by the circuit after resistance R12 connects with LED 3, the base stage of triode T3 passes through the port 6 of resistance R11 concatenation operation amplifier IC3, the port 4 of the emitter difference concatenation operation amplifier IC3 of triode T3, one end of voltage stabilizing didoe ZD2 and one end of resistance R9, the other end of voltage stabilizing didoe ZD2 connects described relay R L1 by resistance R10, the other end of resistance R9 connects and connects described additives for overcharge protection circuit by resistance R8, node between the port 7 contact resistance R8 of operational amplifier IC3 and resistance R10, the port 2 of operational amplifier IC3 connects the node between voltage stabilizing didoe and resistance R10, node between the port 3 contact resistance R9 of operational amplifier IC3 and resistance R8, the emitter of triode T3 connects the normally-closed contact of relay R L1 more also connected the normally-closed contact of relay R L3 by load after.
2. a kind of cellular li-ion battery according to claim 1 overcharges discharge protection circuit, it is characterized in that: the model of described pressurizer IC1 is 7806, and it is provided with input 1, output 3 and earth terminal 2.
3. a kind of cellular li-ion battery according to claim 1 overcharges discharge protection circuit, it is characterized in that: the model of described operational amplifier IC2 and operational amplifier IC3 is all CA3140.
4. a kind of cellular li-ion battery according to claim 1 overcharges discharge protection circuit, it is characterized in that: the model of described triode T1 and triode T2 is all BC548, and the model of described triode T3 is BC558.
5. a kind of cellular li-ion battery according to claim 1 overcharges discharge protection circuit, it is characterized in that:
The model of described diode D1, diode D2 and diode D3 is all IN4007.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457428.9U CN204858532U (en) | 2015-06-30 | 2015-06-30 | Mobile phone lithium battery crosses to fill puts protection circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457428.9U CN204858532U (en) | 2015-06-30 | 2015-06-30 | Mobile phone lithium battery crosses to fill puts protection circuit |
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| CN204858532U true CN204858532U (en) | 2015-12-09 |
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| CN201520457428.9U Expired - Fee Related CN204858532U (en) | 2015-06-30 | 2015-06-30 | Mobile phone lithium battery crosses to fill puts protection circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106851150A (en) * | 2017-02-17 | 2017-06-13 | 昆山康佳电子有限公司 | A kind of TV with storage battery power supply function |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106851150A (en) * | 2017-02-17 | 2017-06-13 | 昆山康佳电子有限公司 | A kind of TV with storage battery power supply function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 building B2, building, Fumin Industrial Zone, Fu Shui street, Guangdong, Shenzhen, China Patentee after: Shenzhen Hai Tong Tong Electronic Limited by Share Ltd Address before: 518000 building B2, building, Fumin Industrial Zone, Fu Shui street, Guangdong, Shenzhen, China Patentee before: Hi-Chipcom Electronics Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20200630 |