CN208316344U - A kind of charging circuit and charging equipment - Google Patents
A kind of charging circuit and charging equipment Download PDFInfo
- Publication number
- CN208316344U CN208316344U CN201820797034.1U CN201820797034U CN208316344U CN 208316344 U CN208316344 U CN 208316344U CN 201820797034 U CN201820797034 U CN 201820797034U CN 208316344 U CN208316344 U CN 208316344U
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- charging
- npn triode
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to charging technique fields, more particularly to a kind of charging circuit and charging equipment.Wherein, charging circuit includes: switching circuit, voltage regulator circuit and comparison circuit.When needing to charge for different size type cell, since the charging time of different size type cell is different, therefore, on the charging time of control different size type cell, voltage regulator circuit is by the second voltage of output different voltages value, and comparison circuit is according to reference voltage and second voltage, time of the control switch circuit work under on state or off state, and then the charging time of battery can be controlled, so as to meet the needs of charging for different size type cell.
Description
Technical field
The utility model relates to charging technique fields, more particularly to a kind of charging circuit and charging equipment.
Background technique
There are many rechargeable batteries of different Charging Specifications on the market, for example, the cell voltage of nickel-cadmium cell is 1.2V, ni-mh
The cell voltage of battery is 1.2V, and the cell voltage of lithium ion battery is 3.6V, and the cell voltage of polymer battery is 3.7V.
Inventor in the implementation of the present invention, has found traditional technology the prior art has at least the following problems: conventional charging device
The charging that single battery can only be met has not been able to the charging for being compatible with a variety of different size type cells.
Utility model content
One purpose of the utility model embodiment is intended to provide a kind of charging circuit and charging equipment, is compatible with different size
The charging of type cell.
In order to solve the above technical problems, the utility model embodiment the following technical schemes are provided:
In a first aspect, the utility model embodiment provides a kind of charging circuit, comprising:
Switching circuit, including switch input terminal, output switching terminal and switch control terminal, the switch input terminal is for receiving
Electric current, the output switching terminal with battery for connecting, and when the switching circuit is in the conductive state, the electric current passes through institute
It states output switching terminal and charges for the battery；
Voltage regulator circuit, including collection terminal and voltage output end, the collection terminal are connect with the switch control terminal, institute
Voltage regulator circuit is stated for sampling and adjusting the battery both end voltage, and using the battery both end voltage after adjusting as
Second voltage output；
Comparison circuit, including first compare input terminal, second compare input terminal and compare output end, described first is more defeated
Enter end be used for input reference voltage, described second compares input terminal connect with the voltage output end, it is described comparison output end and
Switch control terminal connection, the comparison circuit are used for according to the reference voltage and the second voltage, are opened described in control
Powered-down road work is on state or off state.
Optionally, the charging circuit further include: the first filter circuit, first filter circuit are connected to the switch
The output switching terminal of circuit.
Optionally, the switching circuit includes: first resistor, second resistance, 3rd resistor, the first NPN triode, second
NPN triode and third NPN triode, described first resistor one end and described 3rd resistor one end are all connected to first node,
The first resistor other end is connect with the collector of described second resistance one end and second NPN triode respectively, described
The second resistance other end, the base stage of second NPN triode, the base stage of first NPN triode and the 3rd NPN tri-
The collector of pole pipe is all connected to second node, and the 3rd resistor other end is connect with the first NPN triode collector,
The first NPN triode emitter ground connection, the second NPN triode emitter with battery for connecting, the 3rd NPN
The base stage of triode is connect with the voltage output end of the voltage regulator circuit, the emitter ground connection of the third NPN triode.
Optionally, the switching circuit includes light emitting diode, anode and the first NPN tri- of the light emitting diode
The connection of pole pipe emitter, the cathode ground connection of the light emitting diode.
Optionally, the voltage regulator circuit includes: the 4th resistance and adjustable 5th resistance of resistance value, the 4th resistance
One end and described 5th resistance one end are all connected to third node, and the third node is for exporting second voltage, and the described 4th
Resistance other end ground connection, the 5th resistance other end are connect with the output switching terminal of the switching circuit.
Optionally, the charging circuit further includes power circuit, and the power circuit is connected to opening for the switching circuit
Close input terminal.
Optionally, the power circuit includes:
Transformer；
Rectification circuit, including rectification input terminal and rectification output end, the rectification input terminal of the rectification circuit and the change
The secondary coil of depressor connects, and the rectification output end of the rectification circuit is connect with the switch input terminal of the switching circuit.
Optionally, the power circuit further includes the second filter circuit, and second filter circuit is connected to the switch
The switch input terminal of circuit.
Optionally, the rectification circuit is full-wave rectification bridge-type circuit.
In second aspect, the utility model embodiment provides a kind of charging equipment, including described in any item charging circuits.
In the charging circuit and charging equipment that each embodiment of the utility model provides, when needing for different size type
When battery charges, since the charging time of different size type cell is different, in filling for control different size type cell
On the electric time, voltage regulator circuit is by the second voltage of output different voltages value, and comparison circuit is according to reference voltage and second
Voltage, control switch circuit works the time under on state or off state, and then can control the charging time of battery,
So as to meet the needs of charging for different size type cell.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is that the utility model embodiment provides a kind of schematic block circuit diagram of charging circuit；
Fig. 2 is that the utility model embodiment provides a kind of electrical block diagram of charging circuit.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
Charging circuit provided in this embodiment can be applied to the charging equipment of any suitable type, and charging equipment can be
The battery of different size type charges.
Referring to Fig. 1, Fig. 1 is that the utility model embodiment provides a kind of schematic block circuit diagram of charging circuit.Such as Fig. 1 institute
Show, charging circuit 100 includes: switching circuit 200, voltage regulator circuit 300 and comparison circuit 400.
Switching circuit 200 includes switch input terminal, output switching terminal and switch control terminal, and switch input terminal is for receiving electricity
Stream, output switching terminal with battery 500 for connecting, and when switching circuit 200 is in the conductive state, electric current passes through output switching terminal
And it charges for battery 500.
Voltage regulator circuit 300 includes collection terminal and voltage output end, and collection terminal is connect with switch control terminal, and voltage is adjusted
Circuit 300 is exported for sampling simultaneously regulating cell both end voltage, and using the battery both end voltage after adjusting as second voltage.
Comparison circuit 400 includes first comparing input terminal, second comparing input terminal and compare output end, and first compares input
End is used for input reference voltage, and second compares input terminal connect with voltage output end, compares output end and connect with switch control terminal.
Wherein, comparison circuit 400 can be the voltage checking chip of SC-808 series, and SC-808 series is controllable accurate electricity
Detection chip is pressed, which can detecte the voltage of 0.8V to 6V.In this example, it is assumed that the voltage detecting
The reference voltage of chip be 2.5V, inside there is a reference source of a 2.5V to connect the anti-phase input in the amplifier of voltage checking chip
It holds, the input voltage outside the homophase input termination of amplifier.When the input voltage of non-inverting input terminal is lower than reference voltage 2.5V,
The field-effect tube of voltage checking chip is not turned on, and output voltage is equal to input voltage.When the input voltage of non-inverting input terminal is higher than
When 2.5V, internal field-effect tube conducting, output voltage is set low, with the small variation of in-phase end input voltage, three field-effects
The electric current of pipe will change from 0mA to 50mA.
In the present embodiment, comparison circuit 400 exists according to reference voltage and second voltage, the work of control switch circuit 200
On state or off state.For example: for A class size battery cell, when being completely filled with, cell voltage V1.In order to simultaneous
Hold A class size battery cell, voltage regulator circuit 300 adjusts output second voltage V21, wherein V21 is less than according to cell voltage V1
V1.Then, when reference voltage VRF is less than second voltage V21, the work of 400 control switch circuit 200 of comparison circuit is in conducting shape
State, electric current charge by output switching terminal and for battery 500.The work of switching circuit 200 is longer in the turn-on time of on state,
The energy that battery 500 obtains is more, until being full of energy.When reference voltage VRF is greater than second voltage V21, comparison circuit 400
Control switch circuit 200 works in off state, and electric current has not been able to charge by output switching terminal and for battery 500, to stop
Only charge for battery 500.
Again for example: for B class size battery cell, when being completely filled with, cell voltage V3.In order to be compatible with A class specification
Battery, voltage regulator circuit 300 adjust output second voltage V22, wherein V3 is less than V1, V22 etc. according to cell voltage V3
In V21.Then, when reference voltage VRF is less than second voltage V22, the work of 400 control switch circuit 200 of comparison circuit is being led
Logical state, electric current charge by output switching terminal and for battery 500.Switching circuit 200 works in the turn-on time of on state
Longer, the energy that battery 500 obtains is more, until being full of energy.It is more electric when reference voltage VRF is greater than second voltage V22
400 control switch circuit 200 of road works in off state, and electric current has not been able to charge by output switching terminal and for battery 500, from
And stopping is that battery 500 charges.
Therefore, when need for different size type cell charging when, due to different size type cell charging time not
Together, therefore, on the charging time of control different size type cell, voltage regulator circuit passes through the of output different voltages value
Two voltages, comparison circuit work under on state or off state according to reference voltage and second voltage, control switch circuit
Time, and then the charging time of battery can be controlled, the needs of so as to meet for the charging of different size type cell.
In some embodiments, referring to Fig. 2, charging circuit 100 further includes the first filter circuit 600 and power circuit
700。
First filter circuit 600 is connected to the output switching terminal of switching circuit 200.First filter circuit 600 being capable of convection current
Electric current to battery 500 is filtered, so that battery 500 can relatively reliable, rapidly charge.
Power circuit 700 is connected to the switch input terminal of switching circuit 200.Power circuit 700 can out-put supply, for electricity
It charges in pond 500.
In some embodiments, power circuit 700 includes: transformer 71, rectification circuit 72 and the second filter circuit 73.
Transformer 71 includes primary coil and secondary coil, and transformer 71 can carry out at decompression the external power supply of input
Reason.
Rectification circuit 72 includes rectification input terminal and rectification output end, rectification input terminal and the transformer 71 of rectification circuit
Secondary coil connection, the rectification output end of rectification circuit 72 are connect with the switch input terminal of switching circuit 200.
Power supply after rectification circuit 72 can be depressured transformer 71 carries out rectification processing, to provide directly for battery 500
Galvanic electricity source.
In some embodiments, rectification circuit 72 is full-wave rectification bridge-type circuit.
Second filter circuit 73 is connected to the switch input terminal of switching circuit 200.
Second filter circuit 73 can be filtered the DC power supply after rectification, so as to mention for battery 500
For reliable and stable DC power supply.
In some embodiments, switching circuit 200 includes: first resistor R1, second resistance R2,3rd resistor R3, first
NPN triode Q1, the second NPN triode Q2, third NPN triode Q3 and Light-emitting diode LED, one end first resistor R1 and the
Three one end resistance R3 are all connected to first node 2A, the first resistor R1 other end respectively with the one end second resistance R2 and the 2nd NPN
The collector of triode Q2 connects, the second resistance R2 other end, the base stage of the second NPN triode Q2, the first NPN triode Q1
The collector of base stage and third NPN triode Q3 are all connected to second node 2B, tri- pole of the 3rd resistor R3 other end and the first NPN
The connection of pipe Q1 collector, the first NPN triode Q1 emitter ground connection, the second NPN triode Q2 emitter are used to connect with battery,
The base stage of third NPN triode Q3 is connect with the voltage output end of voltage regulator circuit 300, the transmitting of third NPN triode Q3
Pole ground connection.
The anode of Light-emitting diode LED is connect with the first NPN triode Q1 emitter, and the cathode of Light-emitting diode LED connects
Ground.
In some embodiments, voltage regulator circuit 300 includes: the 4th resistance R4 and the adjustable 5th resistance R5 of resistance value,
4th one end resistance R4 and the 5th one end resistance R5 are all connected to third node 3C, and third node 3C is used to export second voltage,
4th resistance R4 other end ground connection, the 5th resistance R5 other end are connect with the output switching terminal of switching circuit 200.
The working principle of charging circuit is as follows:
When battery 500 starts to charge, cell voltage is relatively low.5th resistance R5 and the 4th resistance R4 to cell voltage into
Row sampling, obtains second voltage.Since second voltage is less than reference voltage 2.5V, the output voltage of comparison circuit 400 is low electricity
It is flat.Then, third NPN triode Q3 ends, and the voltage of second node 2B is relatively high, the first NPN triode Q1 and the 2nd NPN tri-
Pole pipe Q2 conducting, electric current flows through Light-emitting diode LED all the way, and Light-emitting diode LED is lit, and can indicate to start to charge.Separately
Electric current flows through first resistor R1 all the way and the second NPN triode Q2 gives battery 500 constant-current charge.
When battery 500 fastly full of when, since cell voltage is not sufficiently stable, but cell voltage full of when voltage above and below into
Traveling wave is dynamic, and the output voltage of comparison circuit 400 is fluctuated, correspondingly, third NPN triode Q3 is connected for a moment and ends for a moment,
The voltage of second node 2B neglects low height suddenly, and the first NPN triode Q1 is ended for a moment with the second NPN triode Q2 to be connected for a moment, in
It is that Light-emitting diode LED is neglected secretly suddenly bright.The switch motion of second NPN triode Q2 causes the electric current for flowing into battery to become smaller, at this time into
Enter constant-voltage charge.
When battery 500 is completely filled with, when cell voltage is increased to be equal to voltage when being full of, since second voltage is greater than
Reference voltage 2.5V, the output voltage of comparison circuit 400 are high level, third NPN triode Q3 conducting, and charging current is from third
NPN triode Q3 flows away, and the voltage of second node 2B reduces, and the first NPN triode Q1 and the second NPN triode Q2 end, hair
Optical diode LED is dimmed, indicates charging complete.
When need for different size type cell charging when, the resistance value of adjustable 5th resistance R5 and be compatible with the electricity
Pond, and charge for the battery.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Under the thinking of the utility model, it can also be combined between the technical characteristic in above embodiments or different embodiments,
Step can be realized with random order, and there are many other variations of the different aspect of the utility model as described above, be
Simplicity, they do not provide in details；Although the utility model is described in detail with reference to the foregoing embodiments, this
The those of ordinary skill in field it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments,
Or equivalent replacement of some of the technical features；And these are modified or replaceed, and do not make the sheet of corresponding technical solution
Matter is detached from the range of each embodiment technical solution of the application.
Claims (10)
1. a kind of charging circuit characterized by comprising
Switching circuit, including switch input terminal, output switching terminal and switch control terminal, the switch input terminal is for receiving electricity
Stream, the output switching terminal with battery for connecting, when the switching circuit is in the conductive state, described in the electric current process
Output switching terminal simultaneously charges for the battery；
Voltage regulator circuit, including collection terminal and voltage output end, the collection terminal are connect with the switch control terminal, the electricity
Voltage regulator circuit is used to sampling and adjusting the battery both end voltage, and using the battery both end voltage after adjusting as second
Voltage output；
Comparison circuit, including first compare input terminal, second compare input terminal and compare output end, described first compares input terminal
For input reference voltage, described second compares input terminal connect with the voltage output end, it is described relatively output end with it is described
Switch control terminal connection, the comparison circuit are used to control the switch electricity according to the reference voltage and the second voltage
Road works on state or off state.
2. charging circuit according to claim 1, which is characterized in that the charging circuit further include: the first filter circuit,
First filter circuit is connected to the output switching terminal of the switching circuit.
3. charging circuit according to claim 1, which is characterized in that the switching circuit includes: first resistor, the second electricity
Resistance, 3rd resistor, the first NPN triode, the second NPN triode and third NPN triode, described first resistor one end with it is described
3rd resistor one end is all connected to first node, the first resistor other end respectively with described second resistance one end and described
The collector of two NPN triodes connects, the second resistance other end, the base stage of second NPN triode, described first
The collector of the base stage of NPN triode and the third NPN triode is all connected to second node, the 3rd resistor other end
It is connect with the first NPN triode collector, the first NPN triode emitter ground connection, the second NPN triode hair
For connecting with battery, the base stage of the third NPN triode is connect emitter-base bandgap grading with the voltage output end of the voltage regulator circuit,
The emitter of the third NPN triode is grounded.
4. charging circuit according to claim 3, which is characterized in that the switching circuit includes light emitting diode, described
The anode of light emitting diode is connect with the first NPN triode emitter, the cathode ground connection of the light emitting diode.
5. charging circuit according to claim 1, which is characterized in that the voltage regulator circuit include: the 4th resistance with
Adjustable 5th resistance of resistance value, described 4th resistance one end and described 5th resistance one end are all connected to third node, and described the
Three nodes are for exporting second voltage, the 4th resistance other end ground connection, the 5th resistance other end and switch electricity
The output switching terminal on road connects.
6. charging circuit according to any one of claims 1 to 5, which is characterized in that the charging circuit further includes power supply
Circuit, the power circuit are connected to the switch input terminal of the switching circuit.
7. charging circuit according to claim 6, which is characterized in that the power circuit includes:
Transformer；
Rectification circuit, including rectification input terminal and rectification output end, the rectification input terminal and the transformer of the rectification circuit
Secondary coil connection, the rectification output end of the rectification circuit connect with the switch input terminal of the switching circuit.
8. charging circuit according to claim 7, which is characterized in that the power circuit further includes the second filter circuit,
Second filter circuit is connected to the switch input terminal of the switching circuit.
9. charging circuit according to claim 7, which is characterized in that the rectification circuit is full-wave rectification bridge-type circuit.
10. a kind of charging equipment, which is characterized in that including charging circuit as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820797034.1U CN208316344U (en) | 2018-05-25 | 2018-05-25 | A kind of charging circuit and charging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820797034.1U CN208316344U (en) | 2018-05-25 | 2018-05-25 | A kind of charging circuit and charging equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208316344U true CN208316344U (en) | 2019-01-01 |
Family
ID=64715461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820797034.1U Active CN208316344U (en) | 2018-05-25 | 2018-05-25 | A kind of charging circuit and charging equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208316344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912225A (en) * | 2019-11-22 | 2020-03-24 | 深圳市优必选科技股份有限公司 | Charging protection circuit, charging protection device and robot |
-
2018
- 2018-05-25 CN CN201820797034.1U patent/CN208316344U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912225A (en) * | 2019-11-22 | 2020-03-24 | 深圳市优必选科技股份有限公司 | Charging protection circuit, charging protection device and robot |
| CN110912225B (en) * | 2019-11-22 | 2021-06-25 | 深圳市优必选科技股份有限公司 | Charging protection circuit, charging protection device and robot |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204794159U (en) | Balanced formula charger | |
| WO2019015225A1 (en) | Circuit for changing indicator lamp during charging | |
| CN208316344U (en) | A kind of charging circuit and charging equipment | |
| CN207443185U (en) | A kind of compatible dial-up adjusts the LED drive circuit of electric current | |
| CN206804838U (en) | Wireless battery logging | |
| CN102723747A (en) | A battery charging circuit and an illuminating lamp | |
| CN205051402U (en) | Lithium batteries control circuit | |
| CN209169994U (en) | A kind of Multi-functional water fog fan circuit | |
| CN208638066U (en) | A kind of charger system | |
| CN206673631U (en) | A kind of battery charger | |
| CN108199446B (en) | Circuit and soft start equipment are protected in lithium battery trickle charge | |
| CN104617648B (en) | A kind of charging control circuit and charging device | |
| CN208999502U (en) | A kind of intelligence adjustable battery group voltage analog device | |
| CN104753112A (en) | Solar LED control circuit | |
| CN208369914U (en) | LED linear full voltage driving circuit | |
| CN104955193A (en) | LED lamp circuit | |
| CN209170013U (en) | It is a kind of while overcharging the battery protecting circuit for turning lamp | |
| CN208904338U (en) | A kind of intelligent socket of achievable intelligent charge | |
| CN207504604U (en) | Maximum current charging circuit may be selected | |
| CN207098695U (en) | A kind of supply self adaptation charging circuit | |
| CN206042422U (en) | Decide BUCK of constant current frequently circuit | |
| CN204157114U (en) | A kind of solar cell that utilizes exports the light-operated multiplex LED controlled | |
| CN204858710U (en) | Quick charging circuit of polymer lithium cell | |
| CN205960725U (en) | Take overcharge protection's charging indication circuit | |
| CN205644158U (en) | Single live wire intelligence switch transmission energy storage control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |