CN207426719U - Charged state detects and electricity condition latching circuit - Google Patents
Charged state detects and electricity condition latching circuit Download PDFInfo
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- CN207426719U CN207426719U CN201720324117.4U CN201720324117U CN207426719U CN 207426719 U CN207426719 U CN 207426719U CN 201720324117 U CN201720324117 U CN 201720324117U CN 207426719 U CN207426719 U CN 207426719U
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Abstract
The utility model discloses a kind of detection of charged state and electricity condition latching circuit, including rectifying and wave-filtering output circuit, battery pack, analog switching circuit, state latching circuit, battery voltage detection circuit and charging current detecting circuit；For the analog switching circuit for rectifying and wave-filtering output circuit to be controlled to be turned on and off battery pack charging, the state latching circuit includes the output terminal of the input terminal of connection battery voltage detection circuit, the input terminal of charging current detecting circuit and connection analog switching circuit；The battery voltage detection circuit is used to detect the voltage of battery pack, the charging current that the charging current detecting circuit charges to battery pack for detection, the output terminal including connection status latch cicuit, the calibration terminal of input reference voltage and current detecting end.
Description
Technical field
It can be by electronics in battery charging process the utility model is related to application of electronic technology field more particularly to one kind
The circuit that the working condition of component is latched automatically.
Background technology
Among routine use process the major accident of explosive combustion can often occur for lithium battery, to the life of people
Property safety brings massive losses；Therefore as lithium battery has been more and more widely used, safety in utilization is also increasingly drawn
Play the attention of people.The burning of lithium battery is different from gasoline, is not gradual but burst type, and accident has once occurring
It is calamitous.Two major reasons for causing this accident are：First, there is event in the charge-discharge protection circuit of lithium ion battery
Barrier reaches battery highest in charging voltage and charges after limitation voltage, fails shut-off in time and leave that it continues to charge, caused
It fills；Second, after battery is full of, battery pack fails to be fully disconnected electrical connection with charging equipment.
Under normal circumstances, overcharging can make a big impact to the safety in utilization of lithium ion battery and service life.Work as electricity
After pond is full of, charging equipment cut-off current, battery port voltage has certain amplitude decline；And at this time if charging equipment and electricity
Pond does not disconnect electrical connection, and charging equipment will detect that cell voltage falls and restarts to charge, and cell voltage is quickly
It raises, then charging equipment detects meeting cut-off current after voltage data, and so cycle is repeated charging, causes battery mistake
It fills.In this case, once failure occurs in the charge-discharge protection circuit of lithium battery, this over-charging of battery situation will be out of control；
Especially multiple serial lithium battery, as long as the charging voltage of wherein a certain batteries is more than maximum limit voltage, inside battery is just
Meeting local pyrexia, bubbing and bulge, so as to which the accident of explosive combustion occur.
Utility model content
The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art, provide a kind of charged state detection and electricity
State latching circuit improves security of the lithium battery among charging process, solves in voltage detecting process and be easily subject to
Interference causes to overcharge so as to lead to the problem of false judgment and still charge repeatedly after battery is full of, and latches and detect for the first time
To the state that is full of of battery.
In order to achieve the above object, the utility model provides following technical solution：
A kind of charged state detection and electricity condition latching circuit, including rectifying and wave-filtering output circuit and battery pack, further include
Analog switching circuit, state latching circuit, battery voltage detection circuit and charging current detecting circuit；
The analog switching circuit is used to that rectifying and wave-filtering output circuit to be controlled to be turned on and off battery pack charging, including
Control the input terminal of switch terminals and connection status latch cicuit；
The state latching circuit include the connection input terminal of battery voltage detection circuit, charging current detecting circuit it is defeated
Enter end and connect the output terminal of analog switching circuit；
The battery voltage detection circuit is used to detect the voltage of battery pack, includes the output of connection status latch cicuit
End, the calibration terminal of input reference voltage and voltage detecting end；
The charging current detecting circuit latches electricity for detecting the charging current to charge to battery pack, including connection status
The output terminal on road, the calibration terminal of input reference voltage and current detecting end.
Preferably, charging current detecting circuit includes operational amplifier U1A, resistance R12, resistance R13, resistance R14 and electricity
Hold C8；
The normal phase input end of operational amplifier U1A passes through resistance R13 connection reference voltages, the positive of operational amplifier U1A
Input terminal after resistance R14 by being grounded；The inverting input of operational amplifier U1A passes through concatenation operation amplifier after capacitance C8
The output terminal of U1A, the inverting input of operational amplifier U1A is by connecting charging current, operational amplifier U1A after resistance R12
Output terminal connection status latch cicuit input terminal.
Preferably, battery voltage detection circuit includes operational amplifier U1B, resistance R15, resistance R16, resistance R17, resistance
R18, resistance R19 and capacitance C9；
The normal phase input end of operational amplifier U1B is by connecting reference voltage after resistance R18, operational amplifier U1B is just
Phase input terminal is by connecting the cathode of battery pack after resistance R19, the cathode ground connection of battery pack, the positive of operational amplifier U1B is defeated
Enter output terminal of the end by concatenation operation amplifier U1B after resistance R15；The inverting input of operational amplifier U1B passes through resistance
The anode of battery pack is connected after R16, the inverting input of operational amplifier U1B is followed by by parallel resistance R17 and capacitance C9
Ground, the input terminal of the output terminal connection status latch cicuit of operational amplifier U1B.
Preferably, state latching circuit includes zener diode ZD1, zener diode ZD2, NPN triode Q2, PNP tri-
Pole pipe Q3, PNP triode Q4, diode D2, resistance R3, resistance R4, resistance R5, resistance R7, resistance R8, resistance R9, resistance
R10, resistance R11, capacitance C4, capacitance C5, capacitance C6 and capacitance C7；
The base stage of PNP triode Q4 passes through the output terminal of resistance R10 connection battery voltage detection circuits, PNP triode Q4
Base stage by being grounded after resistance R11, the collector of PNP triode Q4, which passes through, connects charging current detecting circuit after resistance R9
Output terminal, the emitter ground connection of PNP triode Q4；The anode of the collector connection diode D2 of PNP triode Q4, tri- poles of PNP
The collector of pipe Q4 after capacitance C7 by being grounded, and the collector of PNP triode Q4 is by connecting the negative of diode D2 after resistance R8
The node of the cathode of pole and zener diode ZD2；The cathode of diode D2 connects electricity with the node of the cathode of zener diode ZD2
It is grounded after holding C6；
The base stage of anode connection NPN triode Q2 of zener diode ZD2 and the collector of PNP triode Q3, NPN tri-
Parallel resistance R7 and capacitance C5 between the connecting node and ground terminal of the base stage of pole pipe Q2 and the collector of PNP triode Q3；NPN
The emitter ground connection of triode Q2；Series resistance R4 and electricity between the base stage of PNP triode Q3 and the emitter of PNP triode Q3
Hold C4, the emitter of PNP triodes Q3 by connecting the anode of zener diode ZD1 after resistance R3, zener diode ZD1's
Cathode connects the anode of battery pack；The base stage of PNP triode Q3 connects mould with the connecting node of the collector of NPN triode Q2
Intend the input terminal of on-off circuit.
Preferably, analog switching circuit includes relay switch RLY1, compensation resistance R1, resistance R2, resistance R5, resistance
R6, NPN triode Q1, capacitance C2, capacitance C3 and diode D1；
The contact switch of relay switch RLY1 is connected in parallel in compensation resistance R1 both ends, and compensation resistance R1 both ends connect respectively
Connect positive pole and the anode of battery pack；Electromagnetic coil one end connection 15V voltages of relay switch RLY1, relay switch
The other end of RLY1 is connected in parallel in relay switch RLY1 by the collector of resistance R2 connection NPN triodes Q1, capacitance C2
Electromagnetic coil both ends, diode D1 is connected anti-parallel to the both ends of the electromagnetic coil of relay switch RLY1；NPN triode Q1
Emitter ground connection, capacitance C3 and resistance R6 be parallel between the base stage of NPN triode Q1 and ground terminal, NPN triode Q1
The input terminal that base stage passes through resistance R5 connection status latch cicuits.
Preferably, current rectifying and wave filtering circuit includes capacitance C1, capacitance C1 anodes connection charge power supply anode, and capacitance C1 cathode connect
Ground.
Compared with prior art, charged state detection provided by the utility model and electricity condition latching circuit, have following
Advantageous effect：
Charged state provided by the utility model detection and electricity condition latching circuit mainly using delay charge-discharge circuit and
The curtage signal meeting that the analog circuit that analog thyristor circuit solves in charging equipment is sent when being full of to battery
False judgment, may cause battery be full of after still large current charge repeatedly, the problem of causing over-charging of battery；Instead of cost compared with
High digital circuit, scheme simple possible are suitble to use on charging equipment.
Description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the utility model
Other features, objects and advantages will become more apparent upon：
Fig. 1 is the module diagram of the detection of the utility model embodiment charged state and electricity condition latching circuit；
Fig. 2 is the detection of the utility model embodiment charged state and electricity condition latching circuit principle schematic.
Specific embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can configure to arrange and design with a variety of.Therefore, below to attached
The detailed description of the embodiment of the utility model provided in figure is not intended to limit claimed the scope of the utility model,
But it is merely representative of the selected embodiment of the utility model.Based on the embodiment in the utility model, ordinary skill people
Member's all other embodiments obtained without creative efforts belong to the model of the utility model protection
It encloses.
In the description of the utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set
Put ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or it is integrally connected；Can be mechanical connection or electrical connection；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands concrete meaning of the above-mentioned term in the utility model.
In addition, the technical solution between each embodiment of the utility model can be combined with each other, but must be with ability
Domain those of ordinary skill can be implemented as basis, will be understood that when the combination appearance of technical solution is conflicting or can not realize
The combination of this technical solution is not present, also not within the protection domain of the requires of the utility model.
The utility model is further described with exemplary embodiment below in conjunction with the accompanying drawings, wherein if it is known that technology
Detailed description for showing that it is unnecessary that the utility model is characterized in, then omit it.
Fig. 1 is the module diagram of the detection of the utility model embodiment charged state and electricity condition latching circuit.Including whole
Stream filtering output circuit 10, battery pack 60, analog switching circuit 20, state latching circuit 30,50 and of battery voltage detection circuit
Charging current detecting circuit 40；
Analog switching circuit 20 wraps for rectifying and wave-filtering output circuit 10 to be controlled to be turned on and off 60 charging of battery pack
Include the input terminal of control switch terminals and connection status latch cicuit；
State latching circuit 30 includes the connection input terminal of battery voltage detection circuit 50, charging current detecting circuit 40
The output terminal of input terminal and connection analog switching circuit 20；
Battery voltage detection circuit 50 is used to detect the voltage of battery pack 60, includes the output of connection status latch cicuit 30
End, the calibration terminal of input reference voltage and voltage detecting end；
Charging current detecting circuit 40 latches electricity for detecting the charging current to charge to battery pack 60, including connection status
The output terminal on road 30, the calibration terminal of input reference voltage and current detecting end.
Fig. 2 is the detection of the utility model embodiment charged state and electricity condition latching circuit principle schematic.
Charging current detecting circuit 40 is made of negative feedback operational amplifier U1A and charge current sample network.Including fortune
Calculate amplifier U1A, resistance R12, resistance R13, resistance R14 and capacitance C8；The normal phase input end of operational amplifier U1A passes through resistance
R13 connection reference voltages, the normal phase input end of operational amplifier U1A after resistance R14 by being grounded；Operational amplifier U1A's is anti-
Phase input terminal is passed through by the output terminal of concatenation operation amplifier U1A after capacitance C8, the inverting input of operational amplifier U1A
Charging current, the input terminal of the output terminal connection status latch cicuit of operational amplifier U1A are connected after resistance R12.
Referring to Fig. 2, battery voltage detection circuit 50 is by positive feedback operational amplifier U1B and battery voltage sampling network structure
Into.Including operational amplifier U1B, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19 and capacitance C9；Operation amplifier
The normal phase input end of device U1B passes through resistance by connecting reference voltage, the normal phase input end of operational amplifier U1B after resistance R18
The cathode of battery pack, the cathode ground connection of battery pack, after the normal phase input end of operational amplifier U1B is by resistance R15 are connected after R19
The output terminal of concatenation operation amplifier U1B；The inverting input of operational amplifier U1B is by connecting battery pack after resistance R16
Anode, for the inverting input of operational amplifier U1B by being grounded after parallel resistance R17 and capacitance C9, operational amplifier U1B's is defeated
The input terminal of outlet connection status latch cicuit.
State latching circuit 30 by charging current detecting circuit 40 and battery voltage detection circuit 50 export high level or
Low level state latches, and the on off operating mode of analog switching circuit 20 is controlled with this, make battery pack 60 disconnected with charging equipment or
Person connects.
Referring to Fig. 2, state latching circuit 30 include zener diode ZD1, zener diode ZD2, NPN triode Q2,
PNP triode Q3, PNP triode Q4, diode D2, resistance R3, resistance R4, resistance R5, resistance R7, resistance R8, resistance R9, electricity
Hinder R10, resistance R11, capacitance C4, capacitance C5, capacitance C6 and capacitance C7；
The base stage of PNP triode Q4 passes through the output terminal of resistance R10 connection battery voltage detection circuits, PNP triode Q4
Base stage by being grounded after resistance R11, the collector of PNP triode Q4, which passes through, connects charging current detecting circuit after resistance R9
Output terminal, the emitter ground connection of PNP triode Q4；The anode of the collector connection diode D2 of PNP triode Q4, tri- poles of PNP
The collector of pipe Q4 after capacitance C7 by being grounded, and the collector of PNP triode Q4 is by connecting the negative of diode D2 after resistance R8
The node of the cathode of pole and zener diode ZD2；The cathode of diode D2 connects electricity with the node of the cathode of zener diode ZD2
It is grounded after holding C6；
The base stage of anode connection NPN triode Q2 of zener diode ZD2 and the collector of PNP triode Q3, NPN tri-
Parallel resistance R7 and capacitance C5 between the connecting node and ground terminal of the base stage of pole pipe Q2 and the collector of PNP triode Q3；NPN
The emitter ground connection of triode Q2；Series resistance R4 and electricity between the base stage of PNP triode Q3 and the emitter of PNP triode Q3
Hold C4, the emitter of PNP triodes Q3 by connecting the anode of zener diode ZD1 after resistance R3, zener diode ZD1's
Cathode connects the anode of battery pack；The base stage of PNP triode Q3 connects mould with the connecting node of the collector of NPN triode Q2
Intend the input terminal of on-off circuit.
Referring to Fig. 2, analog switching circuit 20 includes relay switch RLY1, compensation resistance R1, resistance R2, resistance R5, electricity
Hinder R6, NPN triode Q1, capacitance C2, capacitance C3 and diode D1；
The contact switch of relay switch RLY1 is connected in parallel in compensation resistance R1 both ends, and compensation resistance R1 both ends connect respectively
Connect positive pole and the anode of battery pack；Electromagnetic coil one end connection 15V voltages of relay switch RLY1, relay switch
The other end of RLY1 is connected in parallel in relay switch RLY1 by the collector of resistance R2 connection NPN triodes Q1, capacitance C2
Electromagnetic coil both ends, diode D1 is connected anti-parallel to the both ends of the electromagnetic coil of relay switch RLY1；NPN triode Q1
Emitter ground connection, capacitance C3 and resistance R6 be parallel between the base stage of NPN triode Q1 and ground terminal, NPN triode Q1
The input terminal that base stage passes through resistance R5 connection status latch cicuits.
The contact of relay switch RLY1 is attracted then charging equipment and carries out large current charge to battery pack 60；Relay contact
Opening then stop large current charge, if battery pack 60 does not remove yet at this time, by compensation resistance R1 provide mA grades of Weak currents Lai
The self discharge electricity of balancing battery group.
Referring to Fig. 2, current rectifying and wave filtering circuit 10 includes capacitance C1, capacitance C1 anodes connection charge power supply anode, and capacitance C1 is born
Pole is grounded.
Its operation principle is：When the battery voltage sampling network of battery voltage detection circuit 50 detects that cell voltage is less than
Set threshold value, i.e. U1B- ＜ U1B+, then operational amplifier U1B outputs high level, NPN triode Q4 conductings are electric by charging
The output state zero of current detection circuit 40, the on off operating mode of analog switching circuit 20 is unrelated with charging current at this time；Capacitance C6
Zero is discharged by NPN triode Q4 with capacitance C7, but this has no effect on the working condition of state latching circuit 30, still
A working condition before holding.
Its working condition need to be divided into two kinds of situations to analyze：If in the conduction state before NPN triode Q2, tri- poles of NPN
The base stage of pipe Q2 still provides electric current by zener diode ZD1, resistance R3 and PNP triode Q3, continues locked conducting state, will
The base earth of NPN triode Q1, then NPN triode Q1 end, analog switching circuit 20 is off, battery pack 60
It is fully disconnected and is connected with charging equipment；If in cut-off state before NPN triode Q2, base potential remains as zero, continues
Locked cut-off state.The break-make of analog switching circuit 20 depends on the working condition of NPN triode Q1；And NPN triode Q1
Base stage continues to provide electric current by zener diode ZD1, resistance R3, resistance R4 and resistance R5, is held on, and controls analog switch
Circuit 20 is open-minded, and battery pack 60 is reliably connected with charging equipment holding.
When the battery voltage sampling network of battery voltage detection circuit 50 detects cell voltage higher than set threshold value,
That is U1B- ＞ U1B+, then operational amplifier U1B export low level, NPN triode Q4 cut-offs, analog switching circuit 20 is logical at this time
Disconnected state is only related to charging current.It is divided into two states simultaneously at this time：When charge current sample network detects that current value is big
In set threshold value, i.e. U1A- ＞ U1A+, then operational amplifier U1A exports low level；Capacitance C6 and capacitance C7 passes through resistance
R9 discharges into zero, but this nor affects on the working condition of state latching circuit 30, before still maintaining a working condition.
When battery pack 60 is fully charged, charge current sample network detect current value be less than set threshold value, i.e. U1A- ＜ U1A+,
Then amplifier U1A exports high level, while charges via resistance R9 to capacitance C7, and capacitance C6 is filled via resistance R9 and diode D2
Electricity, until Vc6 ＞ Vzd2+Vbe (Q2), NPN triode Q2 saturation conductions at this time, by the base earth of NPN triode Q1, then
NPN triode Q1 is ended, and analog switching circuit 20 is off, and battery pack 60 is fully disconnected with charging equipment to be connected.
It these are only the utility model preferred embodiment, be not used to limitation the utility model, it is all in the utility model
Modifications, equivalent substitutions and improvements for being done etc. within spirit and principle, be required to be included in the scope of protection of the utility model it
It is interior.
Claims (6)
1. a kind of charged state detection and electricity condition latching circuit, including rectifying and wave-filtering output circuit and battery pack, feature exists
In further including analog switching circuit, state latching circuit, battery voltage detection circuit and charging current detecting circuit；
The analog switching circuit is for controlling rectifying and wave-filtering output circuit to be turned on and off battery pack charging, including control
The input terminal of switch terminals and connection status latch cicuit；
The state latching circuit includes input terminal, the input terminal of charging current detecting circuit of connection battery voltage detection circuit
With the output terminal of connection analog switching circuit；
The battery voltage detection circuit is used to detecting the voltage of battery pack, the output terminal including connection status latch cicuit, defeated
Enter the calibration terminal of reference voltage and voltage detecting end；
The charging current detecting circuit is for detecting the charging current to charge to battery pack, including connection status latch cicuit
Output terminal, the calibration terminal of input reference voltage and current detecting end.
2. charged state detection according to claim 1 and electricity condition latching circuit, which is characterized in that the charging current
Detection circuit includes operational amplifier U1A, resistance R12, resistance R13, resistance R14 and capacitance C8；
The normal phase input end of operational amplifier U1A is inputted by resistance R13 connection reference voltages, the positive of operational amplifier U1A
End after resistance R14 by being grounded；The inverting input of operational amplifier U1A passes through concatenation operation amplifier U1A after capacitance C8
Output terminal, the inverting input of operational amplifier U1A is by connecting charging current, the output of operational amplifier U1A after resistance R12
Hold the input terminal of connection status latch cicuit.
3. charged state detection according to claim 1 and electricity condition latching circuit, which is characterized in that the cell voltage
Detection circuit includes operational amplifier U1B, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19 and capacitance C9；
For the normal phase input end of operational amplifier U1B by connecting reference voltage after resistance R18, the positive of operational amplifier U1B is defeated
Enter cathode of the end by connection battery pack after resistance R19, the cathode ground connection of battery pack, the normal phase input end of operational amplifier U1B
Pass through the output terminal of concatenation operation amplifier U1B after resistance R15；After the inverting input of operational amplifier U1B is by resistance R16
The anode of battery pack is connected, the inverting input of operational amplifier U1B after parallel resistance R17 and capacitance C9 by being grounded, computing
The input terminal of the output terminal connection status latch cicuit of amplifier U1B.
4. charged state detection according to claim 2 and electricity condition latching circuit, which is characterized in that the state latch
Circuit includes zener diode ZD1, zener diode ZD2, NPN triode Q2, PNP triode Q3, PNP triode Q4, two poles
Pipe D2, resistance R3, resistance R4, resistance R5, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, capacitance C4, capacitance C5,
Capacitance C6 and capacitance C7；
The base stage of PNP triode Q4 passes through the output terminal of resistance R10 connection battery voltage detection circuits, the base of PNP triode Q4
By being grounded after resistance R11, the collector of PNP triode Q4 passes through the output that charging current detecting circuit is connected after resistance R9 for pole
End, the emitter ground connection of PNP triode Q4；The anode of the collector connection diode D2 of PNP triode Q4, PNP triode Q4
Collector by being grounded after capacitance C7, the collector of PNP triode Q4 by connected after resistance R8 diode D2 cathode and
The node of the cathode of zener diode ZD2；The cathode of diode D2 connects capacitance C6 with the node of the cathode of zener diode ZD2
After be grounded；
The base stage of anode connection NPN triode Q2 of zener diode ZD2 and the collector of PNP triode Q3, NPN triode Q2
Base stage and PNP triode Q3 collector connecting node and ground terminal between parallel resistance R7 and capacitance C5；NPN triode
The emitter ground connection of Q2；Series resistance R4 and capacitance C4 between the base stage of PNP triode Q3 and the emitter of PNP triode Q3,
The emitter of PNP triode Q3 passes through the anode of connection zener diode ZD1 after resistance R3, the cathode company of zener diode ZD1
Connect the anode of battery pack；The base stage of PNP triode Q3 connects analog switch electricity with the connecting node of the collector of NPN triode Q2
The input terminal on road.
5. charged state detection according to claim 2 and electricity condition latching circuit, which is characterized in that the analog switch
Circuit includes relay switch RLY1, compensation resistance R1, resistance R2, resistance R5, resistance R6, NPN triode Q1, capacitance C2, electricity
Hold C3 and diode D1；
The contact switch of relay switch RLY1 is connected in parallel in compensation resistance R1 both ends, and compensation resistance R1 both ends connect electricity respectively
The anode of source Anode and battery group；Electromagnetic coil one end connection 15V voltages of relay switch RLY1, relay switch RLY1's
The other end is connected in parallel in the electromagnetism of relay switch RLY1 by the collectors of resistance R2 connection NPN triode Q1s, capacitance C2
The both ends of coil, diode D1 are connected anti-parallel to the both ends of the electromagnetic coil of relay switch RLY1；The transmitting of NPN triode Q1
Pole is grounded, and capacitance C3 and resistance R6 are parallel between the base stage of NPN triode Q1 and ground terminal, and the base stage of NPN triode Q1 is led to
Cross the input terminal of resistance R5 connection status latch cicuits.
6. charged state detection according to claim 2 and electricity condition latching circuit, which is characterized in that the rectifying and wave-filtering
Output circuit includes capacitance C1, capacitance C1 anodes connection charge power supply anode, capacitance C1 cathode ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720324117.4U CN207426719U (en) | 2017-03-30 | 2017-03-30 | Charged state detects and electricity condition latching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720324117.4U CN207426719U (en) | 2017-03-30 | 2017-03-30 | Charged state detects and electricity condition latching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207426719U true CN207426719U (en) | 2018-05-29 |
Family
ID=62397627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720324117.4U Expired - Fee Related CN207426719U (en) | 2017-03-30 | 2017-03-30 | Charged state detects and electricity condition latching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207426719U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649654A (en) * | 2018-06-08 | 2018-10-12 | 广东小天才科技有限公司 | A kind of charging method, device and terminal device |
| CN109004705A (en) * | 2018-07-24 | 2018-12-14 | 成都芯源系统有限公司 | Charge termination control circuit and battery charging circuit |
| CN109768597A (en) * | 2019-01-18 | 2019-05-17 | 深圳市朗科智能电气股份有限公司 | Charging protective circuit of lithium cell |
| CN110021976A (en) * | 2019-03-18 | 2019-07-16 | 深圳市稳先微电子有限公司 | A kind of overcharged voltage protection detection circuit and system |
-
2017
- 2017-03-30 CN CN201720324117.4U patent/CN207426719U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649654A (en) * | 2018-06-08 | 2018-10-12 | 广东小天才科技有限公司 | A kind of charging method, device and terminal device |
| CN109004705A (en) * | 2018-07-24 | 2018-12-14 | 成都芯源系统有限公司 | Charge termination control circuit and battery charging circuit |
| CN109768597A (en) * | 2019-01-18 | 2019-05-17 | 深圳市朗科智能电气股份有限公司 | Charging protective circuit of lithium cell |
| CN110021976A (en) * | 2019-03-18 | 2019-07-16 | 深圳市稳先微电子有限公司 | A kind of overcharged voltage protection detection circuit and system |
| CN110021976B (en) * | 2019-03-18 | 2023-10-20 | 西安稳先半导体科技有限责任公司 | Overcharge voltage protection detection circuit and system |
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Granted publication date: 20180529 Termination date: 20190330 |