CN209001614U - A kind of charging control circuit of charger - Google Patents
A kind of charging control circuit of charger Download PDFInfo
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- CN209001614U CN209001614U CN201821643602.9U CN201821643602U CN209001614U CN 209001614 U CN209001614 U CN 209001614U CN 201821643602 U CN201821643602 U CN 201821643602U CN 209001614 U CN209001614 U CN 209001614U
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- battery pack
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- microcontroller
- triode
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Abstract
A kind of charging control circuit of charger includes: Switching Power Supply, output end are connected with the input terminal of battery pack；Microcontroller, including detection port, the first control terminal and the second control terminal, wherein detection port is connected with the signal output end of battery pack, positive terminal with negative pole end, and the second control terminal is connected with the control signal end of Switching Power Supply；First control circuit, input terminal are connected with the first control terminal of microcontroller, and output end is connected between the output end of Switching Power Supply and the input terminal connecting line of battery pack；It is characterized by also including blocking filter circuit, the input terminal of blocking filter circuit is connected with the first control terminal of microcontroller, and the output end of the blocking filter circuit is connected with the input terminal of first control circuit.Guaranteeing charging normal for charger, additionally it is possible to charger is automatically controlled when charger internal component breaks down to be stopped charging to battery pack, it can effective protection battery.
Description
Technical field
The utility model relates to charger field, in particular to a kind of charging control circuit of charger.
Background technique
Charger is made of charging module and charge control module, when charger charges to battery pack, is adopted by port
The information of set battery packet feedback, such as voltage, electric current, temperature etc., and according to the information that battery pack is fed back judge automatically whether need
Normal charging operation is carried out to battery pack, when the information that charge control module detects that battery pack is fed back is abnormal, then filled
The operation of electric control module horse back charge closing stops charging module and charges to battery pack, battery pack is avoided to overcharge and cause
Safety accident；When the feedback information detected is in effective range, then charge control module continues to control charging module to electricity
Chi Bao charges.
To the reliability of charger and safety, higher requirements are also raised in industry.Industry new standard IEC 62841
Safety for charger is put forward new requirements: it is required that battery charger is under single failure conditions, charger is to battery
Packet charging operations still can be controlled and safe and reliable.
Currently, the charge control module of battery charger is usually using microcontroller, and microcontroller is anti-according to battery pack
The information control charge control module work of feedback, so that charge control module control charging module be made charge or do not charge.
Charge control module in conventional charger is using direct level mode, high level unlatching/low to the control of charging circuit
Level is closed or low level unlatching/high level is closed, and the control circuit of traditional charger is all based on default microcontroller
There is no problem or is designed under conditions of stopping working for itself, but in actual use, due to charger
The case where control circuit in interior microcontroller and charging module also will appear failure or stop working, microcontroller occur
Failure or when stopping working, the control in output high level or low level or charging module for a long time of the control terminal of microcontroller
It is uncontrollable to charging module when circuit breaks down, battery pack in charging process will lead to battery pack charging for a long time and overcharge
So as to cause the generation of explosion accident.For this purpose, its reliability has been far from satisfying current demand.
Utility model content
For the current state of the art, the technical problem to be solved by the utility model is to provide a kind of highly reliable, energy
The charging control circuit of the charger of effective protection battery.
Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of charge control electricity of charger
Road includes:
Switching Power Supply, powers for battery pack, and output end is connected with the input terminal of battery pack；
Whether microcontroller needs to charge and control switch power work for monitoring battery pack, including detection port, the
One control terminal and the second control terminal, wherein detection port is connected with the signal output end of battery pack, positive terminal with negative pole end,
And second control terminal be connected with the control signal end of Switching Power Supply；
First control circuit is powered battery pack for control switch power supply, the input terminal of first control circuit with
First control terminal of microcontroller is connected, and the output end of first control circuit is connected to the output end and battery pack of Switching Power Supply
Input terminal connecting line between；
It is characterized by also including blocking filter circuit, the of the input terminal of the blocking filter circuit and microcontroller
One control terminal is connected, and the output end of the blocking filter circuit is connected with the input terminal of first control circuit.
Specifically, the first control circuit include the first metal-oxide-semiconductor and the second triode, the blocking filter circuit it is defeated
Outlet is connected with the base stage of the second triode, the emitter ground connection of second triode, the current collection of second triode
Pole connects the grid of first metal-oxide-semiconductor, and the source electrode of first metal-oxide-semiconductor is connected with the output end of Switching Power Supply, and described
The drain electrode of one metal-oxide-semiconductor is connected with the input terminal of battery pack.
Further, the blocking filter circuit includes capacitance and current rectifying and wave filtering circuit.
Preferably, the current rectifying and wave filtering circuit includes second resistance and the second capacitor, one end of the capacitance connects
The first control terminal of microcontroller is connect, the other end of the capacitance connects one end of second resistance, the second resistance
The other end is separately connected the base stage of the second triode and one end of the second capacitor, and the other end of second capacitor is connected to described
Between the emitter and ground connecting line of second triode.
Preferably, the current rectifying and wave filtering circuit includes 3rd resistor, third capacitor and the second diode, the blocking electricity
First control terminal of one end connection microcontroller of appearance, one end of the other end connection 3rd resistor of the capacitance are described
The other end of 3rd resistor connects the anode of the second diode, and the cathode of second diode is separately connected the second triode
One end of base stage and third capacitor, the other end of the third capacitor are connected to emitter and the ground connection of second triode
Between line.
Preferably, the current rectifying and wave filtering circuit includes the 4th capacitor and third diode, one end of the capacitance
First control terminal of connection microcontroller, the anode of the other end connection third diode of the capacitance, the described 3rd 2
The cathode of pole pipe is separately connected the base stage of the second triode and one end of the 4th capacitor, and the other end of the 4th capacitor is connected to
Between the emitter and ground connecting line of second triode.
Preferably, the current rectifying and wave filtering circuit includes the 4th resistance, the 5th capacitor and the 4th diode, the 4th electricity
First control terminal of one end connection microcontroller of resistance, one end of the other end connection capacitance of the 4th resistance are described
The other end of capacitance connects the anode of the 4th diode, and the cathode of the 4th diode is separately connected the second triode
One end of base stage and the 5th capacitor, the other end of the 5th capacitor are connected to emitter and the ground connection of second triode
Between line.
Second triode can preferably be NPN pipe.
First metal-oxide-semiconductor is preferably PMOS tube.
Compared with the prior art, the advantages of the utility model are: passing through while detecting signal output and the electricity of battery pack
Pressure output, judges whether battery pack needs to charge, and prevents the voltage of battery pack or signal output from detecting to stagger the time, to battery pack
Whether the erroneous judgement of charged state is needed；When charger internal component works normally, blocking filter circuit can control switch electricity
Source charges normal battery pack, and when microcontroller in charger breaks down, blocking filter circuit still be can control out
Powered-down source, makes Switching Power Supply not charge to battery pack, can prevent overcharging for battery pack when element fault in charger, protects
Battery better effect.
Detailed description of the invention
Fig. 1 is the control circuit schematic diagram of charger in the utility model embodiment one；
Fig. 2 is the practical electric operation control circuit figure of the charger in Fig. 1；
Fig. 3 is the electric operation control circuit figure of charger in the utility model embodiment one；
Fig. 4 is the electric operation control circuit figure of charger in the utility model embodiment two；
Fig. 5 is the electric operation control circuit figure of charger in the utility model embodiment three；
Fig. 6 is the electric operation control circuit figure of charger in the utility model embodiment four.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
Embodiment one:
As shown in Figure 1, Switching Power Supply and microcontroller U2 are equipped in charger, the detection port PA0 of microcontroller U2,
PA1 and PA2 is connected with the signal output end T/ID of battery pack, positive terminal B+ with negative pole end B- respectively, and microcontroller U2
Second control terminal OC is connected with the control signal end A1 of Switching Power Supply, the output end OUTPUT of Switching Power Supply and battery pack it is defeated
Enter INPUT1 is held to be connected, the input terminal of the first control terminal PB1 connection blocking filter circuit 2 of microcontroller U2, blocking filtering
The output end of circuit 2 is connected with the input terminal of first control circuit 1, and the output end of first control circuit 1 is connected to switch electricity
Between the output end OUTPUT in source and the input terminal INPUT1 connecting line of battery pack, and also connect on other pins of microcontroller U2
It is connected to peripheral circuit (not shown).
Specifically, as shown in Fig. 2, first control circuit 1 includes the first metal-oxide-semiconductor Q1 and the second triode Q2, blocking filtering
The output end of circuit 2 is connected with the base stage of the second triode Q2, the emitter ground connection of the second triode Q2, the second triode Q2
Collector connect the grid of the first metal-oxide-semiconductor Q1, the source electrode of the first metal-oxide-semiconductor Q1 is connected with the output end OUTPUT of Switching Power Supply
It connects, the drain electrode of the first metal-oxide-semiconductor Q1 is connected with the input terminal INPUT1 of battery pack.Wherein, in the collector of the second triode Q2
It connect middle position with the grid of the first metal-oxide-semiconductor Q1 and is also connected with first resistor R1, first resistor R1 and the first metal-oxide-semiconductor Q1
Grid junction is also connected with the 5th resistance R5, and the 5th resistance R5 other end is connected to the output end and the first MOS of Switching Power Supply
Between the source connection lines of pipe Q1, the drain electrode of the first metal-oxide-semiconductor Q1 passes through the input terminal INPUT1 of the first diode D1 and battery pack
It is connected.In the present embodiment, the first metal-oxide-semiconductor Q1 is PMOS tube, and the second triode Q2 is NPN pipe.
As shown in figure 3, blocking filter circuit 2 includes capacitance C1 and current rectifying and wave filtering circuit, current rectifying and wave filtering circuit includes
One end of second resistance R2 and the second capacitor C2, capacitance C1 connect the first control terminal PB1 of microcontroller U2, capacitance
C1 the other end connection second resistance R2 one end, the other end of second resistance R2 be separately connected the second triode Q2 base stage and
One end of second capacitor C2, the other end of the second capacitor C2 are connected between the emitter and ground connecting line of the second triode Q2.
Use the charge control method of the charging control circuit, comprising the following steps:
Step (1), the signal and positive terminal that detect port and monitor the signal output end of battery pack according to microcontroller
Voltage between negative pole end judges between the signal and positive terminal and negative pole end of the signal output end of the battery pack monitored
Whether voltage is all satisfied charging requirement, if so, step (2) are then transferred to, if not, being transferred to step (5)；
Step (2), judge microcontroller the first control terminal whether output pulse signal, if so, be then transferred to step (3),
If not, being transferred to step (4)；In the present embodiment, pulse signal is square wave；
Step (3), pulse signal export fixed voltage value by blocking filter circuit, and first control circuit conducting is then opened
Powered-down source charges to battery pack, goes to step (1)；
Step (4), the first control terminal of microcontroller export fixed high level or low level, after blocking filter circuit
Low level is exported, first control circuit is not turned on, and is transferred to step (6)；
Step (5) monitors the voltage between the positive terminal and negative pole end of battery pack by the detection port of microcontroller, sentences
Whether the voltage between the positive terminal and negative pole end of disconnected battery pack continues growing, if so, then determining that event occurs in first control circuit
Barrier, by between the output voltage of the second control terminal control switch power supply and the positive terminal and negative pole end of battery pack of microcontroller
Voltage it is equal, step (6) are transferred to, if not, being directly transferred to step (6)；
Step (6), Switching Power Supply do not charge to battery pack.
When in use, after the Switching Power Supply access AC power source of charger, the output end OUTPUT output of Switching Power Supply is straight
Galvanic electricity presses HV, the DC voltage HV that Switching Power Supply generates to need to charge to battery pack in the first metal-oxide-semiconductor Q1 conducting, therefore
Need charger internal microcontroller U2 control the first metal-oxide-semiconductor Q1 open, detection port PA0, PA1 of microcontroller U2 and
PA2 monitors the voltage between the signal, positive terminal B+ and negative pole end B- of the signal output end T/ID of battery pack respectively, works as positive terminal
When the signal of voltage and signal output end T/ID between B+ and negative pole end B- is all satisfied charging requirement, microcontroller U2 just
Often when work, the first control terminal PB1 output pulse signal of microcontroller U2, pulse signal passes through capacitance C1, and whole
It flows under filter circuit effect, a fixed voltage value is generated at the base stage of the second triode Q2, the voltage value is for controlling
The base stage of second triode Q2, when voltage value exceeds the threshold value of the second triode Q2, then the second triode Q2 is connected, thus the
One metal-oxide-semiconductor Q1 conducting, Switching Power Supply charge to battery pack；When microcontroller U2 in charger breaks down, microcontroller
The the first control terminal PB1 output high level or low level of U2, high level or low level are DC component, high level or low level warp
After crossing capacitance C1, then low level is generated at the base stage of the second triode Q2, therefore the second triode Q2 ends, first
Metal-oxide-semiconductor Q1 cut-off, Switching Power Supply do not charge to battery pack, therefore do not work in the microcontroller U2 of charger failure
When, it turns off the switch power supply and charges to battery pack, protect the normal and battery of charging, blocking filter circuit 2 ensure that charging
Normal and battery defencive function.
When doing fault test to the first metal-oxide-semiconductor Q1, microcontroller U2 monitors the letter of the signal output end T/ID of battery pack
Voltage number between positive terminal B+ and negative pole end B-, when microcontroller U2 determines that battery pack does not need to be charged again, then
The voltage between the positive terminal B+ and negative pole end B- of the detection port monitoring battery pack of microcontroller U2 is continued through, judges battery
Whether the voltage between the positive terminal B+ and negative pole end B- of packet continues growing, if so, then illustrate that the first metal-oxide-semiconductor Q1 breaks down,
Then pass through the output voltage HV of the second control terminal OC control switch power supply and the positive terminal B+ of battery pack of microcontroller U2 and bears
Voltage between extreme B- is equal, and Switching Power Supply does not charge to battery pack at this time, if not, the first metal-oxide-semiconductor Q1 of explanation is not
It breaks down, then Switching Power Supply does not charge to battery pack；Charging function is actively closed by the control terminal PB1 of microcontroller U2
Can, Switching Power Supply always charges to battery pack when avoiding the first metal-oxide-semiconductor Q1 failure, it is achieved that filling to battery pack
Electric protection.
By detecting the signal output and voltage output of battery pack simultaneously, judges whether battery pack needs to charge, prevent electricity
Voltage or the signal output of Chi Bao detects to stagger the time, and the erroneous judgement of charged state whether is needed to battery pack；In charger internal
When component works normally, blocking filter circuit can control Switching Power Supply and charge normal to battery pack, and in charger
When microcontroller breaks down, blocking filter circuit remains to control switch power supply, and Switching Power Supply is made not charge to battery pack,
And after microcontroller determines charging complete, if the voltage of battery pack still increases, pass through microcontroller regulating switch power supply
Output voltage, control switch power supply do not charge to battery pack, the mistake of battery pack when can prevent element fault in charger
It fills, protects battery better effect.
Embodiment two:
What is different from the first embodiment is that as shown in figure 4, current rectifying and wave filtering circuit include 3rd resistor R3, third capacitor C3 and
First control terminal of one end connection microcontroller of the second diode D2, capacitance C1, the other end connection of capacitance C1
One end of 3rd resistor R3, the other end of 3rd resistor R3 connect the anode of the second diode D2, the cathode of the second diode D2
It is separately connected the base stage of the second triode Q2 and one end of third capacitor C3, the other end of third capacitor C3 is connected to the two or three pole
Between the emitter and ground connecting line of pipe Q2.
When microcontroller U2 is worked normally, the first control terminal PB1 output pulse signal of microcontroller U2, pulse signal
The DC component in pulse signal is isolated after capacitance C1, generates AC compounent, and AC compounent successively passes through the
The current rectifying and wave filtering circuit of three resistance R3, the second diode D2 and third capacitor C3 composition, make current rectifying and wave filtering circuit generate an electricity
The second triode Q2 is connected in pressure value, charges so that Switching Power Supply is connected in the first metal-oxide-semiconductor Q1 to battery pack；It is micro- in charger
When controller U2 breaks down, the first control terminal PB1 output high level or low level, high level or low level of microcontroller U2
For DC component, high level or low level then export low level, the equally base in the second triode Q2 after capacitance C1
Low level is generated at pole, therefore the second triode Q2 ends, the first metal-oxide-semiconductor Q1 cut-off, Switching Power Supply does not fill battery pack
Electricity, therefore when the microcontroller U2 of charger failure does not work, it turns off the switch power supply and charges to battery pack.
Embodiment three:
What is different from the first embodiment is that as shown in figure 5, current rectifying and wave filtering circuit includes the 4th capacitor C4 and third diode
First control terminal of one end connection microcontroller of D3, capacitance C1, the other end of capacitance C1 connect third diode
The anode of D3, the cathode of third diode D3 are separately connected the base stage of the second triode Q2 and one end of the 4th capacitor C4, and the 4th
The other end of capacitor C4 is connected between the emitter and ground connecting line of the second triode Q2.
When microcontroller U2 is worked normally, the first control terminal PB1 output pulse signal of microcontroller U2, pulse signal
The DC component in pulse signal is isolated after capacitance C1, generates AC compounent, and AC compounent successively passes through the
The current rectifying and wave filtering circuit of three diode D3 and the 4th capacitor C4 composition, so that current rectifying and wave filtering circuit is generated a voltage value makes the two or three
Pole pipe Q2 conducting charges to battery pack so that Switching Power Supply is connected in the first metal-oxide-semiconductor Q1；Likewise, with identical in example 1,
When microcontroller U2 in charger breaks down, the first control terminal PB1 output high level or low level of microcontroller U2,
High level or low level are DC component, high level or low level after capacitance C1, then export low level, equally the
Low level is generated at the base stage of two triode Q2, therefore the second triode Q2 ends, the first metal-oxide-semiconductor Q1 cut-off, Switching Power Supply is not
It charges to battery pack, therefore when the microcontroller U2 of charger failure does not work, turns off the switch power supply to battery
Packet charging, protects the normal and battery of charging.
Example IV:
What is different from the first embodiment is that as shown in fig. 6, current rectifying and wave filtering circuit include the 4th resistance R4, the 5th capacitor C5 and
First control terminal of one end connection microcontroller of the 4th diode D4, the 4th resistance R4, the other end connection of the 4th resistance R4
One end of capacitance C1, the other end of capacitance C1 connect the anode of the 4th diode D4, the cathode of the 4th diode D4
It is separately connected the base stage of the second triode Q2 and one end of the 5th capacitor C5, the other end of the 5th capacitor C5 is connected to the two or three pole
Between the emitter and ground connecting line of pipe Q2.
When microcontroller U2 is worked normally, the first control terminal PB1 output pulse signal of microcontroller U2, pulse signal
After the 4th resistance R4, the DC component in pulse signal is isolated using capacitance C1, generates AC compounent, and hand over
Flow component successively passes through the 4th diode D4 and the 5th capacitor C5 and carries out rectifying and wave-filtering, and the second triode Q2 is connected, thus the
One metal-oxide-semiconductor Q1 is connected Switching Power Supply and charges to battery pack；Likewise, the micro-control with identical in example 1, in charger
When device U2 processed breaks down, the first control terminal PB1 output high level or low level, high level or low level of microcontroller U2 is
DC component, high level or low level are input in capacitance C1 after the 4th resistance R4, then in the second triode Q2
Base stage at generate low level, therefore the second triode Q2 end, the first metal-oxide-semiconductor Q1 cut-off, Switching Power Supply not to battery pack into
Row charging, therefore when the microcontroller U2 of charger failure does not work, it turns off the switch power supply and charges to battery pack.
Claims (9)
1. a kind of charging control circuit of charger, includes:
Switching Power Supply, powers for battery pack, and output end is connected with the input terminal of battery pack；
Microcontroller, for monitoring whether battery pack needs charging and control switch power work, including detection port, the first control
End processed and the second control terminal, wherein detection port is connected with the signal output end of battery pack, positive terminal with negative pole end, and the
Two control terminals are connected with the control signal end of Switching Power Supply；
First control circuit (1), for being powered by the first control terminal control switch power supply of microcontroller to battery pack,
The input terminal of first control circuit (1) is connected with the first control terminal of microcontroller, and the output end of first control circuit (1) connects
It connects between the output end of Switching Power Supply and the input terminal connecting line of battery pack；
It is characterized by also including blocking filter circuit (2), the input terminal of the blocking filter circuit (2) and microcontroller
First control terminal is connected, and the output end of the blocking filter circuit (2) is connected with the input terminal of first control circuit (1).
2. charging control circuit according to claim 1, it is characterised in that: the first control circuit (1) includes first
Metal-oxide-semiconductor (Q1) and the second triode (Q2), the base stage phase of the output end and the second triode (Q2) of the blocking filter circuit (2)
Connection, the emitter ground connection of second triode (Q2), the collector of second triode (Q2) connect the first MOS
The grid of (Q1) is managed, the source electrode of first metal-oxide-semiconductor (Q1) is connected with the output end of Switching Power Supply, first metal-oxide-semiconductor
(Q1) drain electrode is connected with the input terminal of battery pack.
3. charging control circuit according to claim 2, it is characterised in that: the blocking filter circuit (2) includes blocking
Capacitor (C1) and current rectifying and wave filtering circuit.
4. charging control circuit according to claim 3, it is characterised in that: the current rectifying and wave filtering circuit includes second resistance
(R2) and the second capacitor (C2), the first control terminal of one end connection microcontroller of the capacitance (C1), the blocking are electric
Hold one end of other end connection second resistance (R2) of (C1), the other end of the second resistance (R2) is separately connected the two or three pole
The base stage of (Q2) and one end of the second capacitor (C2) are managed, the other end of second capacitor (C2) is connected to second triode
(Q2) between emitter and ground connecting line.
5. charging control circuit according to claim 3, it is characterised in that: the current rectifying and wave filtering circuit includes 3rd resistor
(R3), third capacitor (C3) and the second diode (D2), the first control of one end connection microcontroller of the capacitance (C1)
End processed, one end of other end connection 3rd resistor (R3) of the capacitance (C1), the other end of the 3rd resistor (R3)
The anode of the second diode (D2) is connected, the cathode of second diode (D2) is separately connected the base stage of the second triode (Q2)
With one end of third capacitor (C3), the other end of the third capacitor (C3) is connected to the emitter of second triode (Q2)
Between ground connecting line.
6. charging control circuit according to claim 3, it is characterised in that: the current rectifying and wave filtering circuit includes the 4th capacitor
(C4) and third diode (D3), one end of the capacitance (C1) connect the first control terminal of microcontroller, the blocking
The anode of other end connection third diode (D3) of capacitor (C1), the cathode of the third diode (D3) are separately connected second
The other end of one end of the base stage of triode (Q2) and the 4th capacitor (C4), the 4th capacitor (C4) is connected to the described 2nd 3
Between the emitter and ground connecting line of pole pipe (Q2).
7. charging control circuit according to claim 3, it is characterised in that: the current rectifying and wave filtering circuit includes the 4th resistance
(R4), the 5th capacitor (C5) and the 4th diode (D4), the first control of one end connection microcontroller of the 4th resistance (R4)
End processed, one end of other end connection capacitance (C1) of the 4th resistance (R4), the other end of the capacitance (C1)
The anode of the 4th diode (D4) is connected, the cathode of the 4th diode (D4) is separately connected the base stage of the second triode (Q2)
With one end of the 5th capacitor (C5), the other end of the 5th capacitor (C5) is connected to the emitter of second triode (Q2)
Between ground connecting line.
8. according to the described in any item charging control circuits of claim 2~7, it is characterised in that: second triode (Q2)
For NPN pipe.
9. according to the described in any item charging control circuits of claim 2~7, it is characterised in that: first metal-oxide-semiconductor (Q1) is
PMOS tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821643602.9U CN209001614U (en) | 2018-10-10 | 2018-10-10 | A kind of charging control circuit of charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821643602.9U CN209001614U (en) | 2018-10-10 | 2018-10-10 | A kind of charging control circuit of charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209001614U true CN209001614U (en) | 2019-06-18 |
Family
ID=66802308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821643602.9U Expired - Fee Related CN209001614U (en) | 2018-10-10 | 2018-10-10 | A kind of charging control circuit of charger |
Country Status (1)
| Country | Link |
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| CN (1) | CN209001614U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899972A (en) * | 2018-10-10 | 2018-11-27 | 邵琪 | A kind of charging control circuit and its control method of charger |
| CN113809790A (en) * | 2021-08-05 | 2021-12-17 | 惠州市蓝微电子有限公司 | Multi-battery pack charging method, charging monitoring method and device |
-
2018
- 2018-10-10 CN CN201821643602.9U patent/CN209001614U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899972A (en) * | 2018-10-10 | 2018-11-27 | 邵琪 | A kind of charging control circuit and its control method of charger |
| CN113809790A (en) * | 2021-08-05 | 2021-12-17 | 惠州市蓝微电子有限公司 | Multi-battery pack charging method, charging monitoring method and device |
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