CN205911775U - Controllable battery charging circuit and charger - Google Patents
Controllable battery charging circuit and charger Download PDFInfo
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- CN205911775U CN205911775U CN201620690610.3U CN201620690610U CN205911775U CN 205911775 U CN205911775 U CN 205911775U CN 201620690610 U CN201620690610 U CN 201620690610U CN 205911775 U CN205911775 U CN 205911775U
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Abstract
The utility model discloses a controllable battery charging circuit and charger. This circuit can include: the protected location, including a MOS pipe, the 2nd MOS pipe and resistance R1, R2, MOS pipe with the 2nd MOS pipe is reverse to be connected and the series connection is imported between positive pole and the circuit output positive pole at the circuit, and other end conduct is connected to resistance R1's the one end and the grid of MOS pipe the first control end of protected location, other end conduct is connected to resistance R2's the one end and the grid of the 2nd MOS pipe the second control end of protected location, the switch element, control the break -make of MOS pipe, the start control unit, its control the break -make of the 2nd MOS pipe, and the voltage sample unit, sample to charging device voltage. The forward voltage drop of this circuit through managing two MOS reverse connection, circuit production when having reduced to charge to improve battery discharging electric -quantity and reduced system power dissipation.
Description
Technical field
This utility model is related to battery charger, more particularly, to a kind of controlled battery charger and charger.
Background technology
Existing battery charger and charger generally to prevent reversal connection using diode and to pour in down a chimney.Because diode is deposited
In pressure drop so that battery port voltage can not reach the cell voltage being full of, and affect the life-span of battery.Additionally, it is this
Pressure drop can reduce the efficiency of power circuit, increases the total power dissipation of system.Therefore, it is necessary to exploitation one kind can improve fill
Power consumption, the battery charger reducing system power dissipation and charger.
The information being disclosed in this utility model background section is merely intended to deepen general background technology of this disclosure
Understanding, and be not construed as recognizing or imply in any form that this information structure is known to those skilled in the art
Prior art.
Utility model content
The utility model proposes a kind of controlled battery charger and charger, it passes through reversely to connect two mos pipes
Connect, reduce the forward voltage drop that during charging, circuit produces, thus improve battery charge and reducing system power dissipation.
According to one side of the present utility model it is proposed that a kind of controlled battery charger.This circuit may include that protection
Unit, described protection location includes a mos pipe q1, the 2nd mos pipe q2 and resistance r1, r2, a described mos pipe q1 and described
2nd mos pipe q2 Opposite direction connection and be connected in series in circuit input positive pole chr+ and circuit output positive pole bat+ between, resistance
One end of r1 is connected with the grid of a mos pipe q1, the other end as the first control end of described protection location, the one of resistance r2
End is connected with the grid of the 2nd mos pipe q2, and the other end is as the second control end of described protection location；Switch element, described opens
Close unit to be connected between circuit input positive pole chr+ and circuit input negative pole chr-, outfan and the first of described protection location
Control end connects, and described switch element controls the break-make of a described mos pipe q1；Start control unit, described startup controls single
The input input of unit enables signal en, and outfan is connected with the second control end of described protection location, and described startup controls single
Unit controls the break-make of described 2nd mos pipe q2；And voltage sampling unit, described voltage sampling unit is to circuit input positive pole
Charging device voltage between chr+ and circuit input negative pole chr- is sampled.
According to another aspect of the present utility model it is proposed that a kind of charger of the above-mentioned controlled battery charger of inclusion.
This utility model passes through to reduce the forward voltage drop that when charging, circuit produces thus reducing system power dissipation, and makes electricity
Pond charge capacity can reach very.And, make input port short according to controlled battery charger of the present utility model
Battery short circuit will not be occurred during road to discharge, the moment realizing inserting charging device in circuit avoids sparking and to charging device electricity
Pressure carries out sampling and judges and decide whether to be charged.
Brief description
By combining accompanying drawing, this utility model exemplary embodiment is described in more detail, of the present utility model above-mentioned
And other purpose, feature and advantage will be apparent from, wherein, in this utility model exemplary embodiment, identical
Reference number typically represents same parts.
Fig. 1 shows the schematic diagram according to controlled battery charger of the present utility model.
Fig. 2 shows the circuit diagram of the controlled battery charger according to an embodiment of the present utility model.
Specific embodiment
It is more fully described this utility model below with reference to accompanying drawings.Although showing of the present utility model preferred in accompanying drawing
Embodiment, however, it is to be appreciated that may be realized in various forms this utility model and should not being limited by embodiments set forth here
System.On the contrary, these embodiments are provided so that this utility model is more thorough and complete, and can will be of the present utility model
Scope intactly conveys to those skilled in the art.
Embodiment 1
Fig. 1 shows the schematic diagram of the controlled battery charger according to an embodiment of the present utility model.
In this embodiment, protection location 10, switch be may include that according to controlled battery charger of the present utility model
Unit 20, startup control unit 30 and voltage sampling unit 40.Protection location 10 include a mos pipe q1, the 2nd mos pipe q2 and
Resistance r1, r2, a mos pipe q1 and the 2nd mos pipe q2 Opposite direction connection, are connected in series in circuit input positive pole chr+ and circuit is defeated
Go out between positive pole bat+, one end of resistance r1 is connected with the grid of a mos pipe q1, the other end is as the first of protection location 10
Control end, one end of resistance r2 is connected with the grid of the 2nd mos pipe q2, and the other end is as the second control end of protection location 10.
Switch element 20 is connected between circuit input positive pole chr+ and circuit input negative pole chr-, and the of outfan and protection location 10
One control end connects, and switch element 20 controls the break-make of a mos pipe q1.Start control unit 30, start control unit 30
Input input enables signal en, and outfan is connected with the second control end of protection location 10, startup control unit 30 control the
The break-make of two mos pipe q2；And voltage sampling unit 40, voltage sampling unit 40 inputs positive pole chr+ to circuit and circuit inputs
Charging device voltage between negative pole chr- is sampled.
The present embodiment passes through, by two mos pipe Opposite direction connections, to reduce the forward voltage drop that during charging, circuit produces, thus dropping
Low system power dissipation, improve charge capacity.
The following detailed description of according to controlled battery charger of the present utility model.
Switch element 20 controls the break-make of a mos pipe q1, and the input input starting control unit 30 enables signal en
To control the break-make of the 2nd mos pipe q2.When charging, a mos pipe q1 and the 2nd mos pipe q2 turns on, and therefore electric current is permissible
By protection location 10, battery is charged.Due to internal resistance very little when mos pipe turns on, produce therefore on two mos pipes
Pressure drop be far smaller than prior art in pressure drop produced by counnter attack diode, greatly reduce the power consumption of system, and improve
Battery charge.
Alternatively, the first enable signal en1 and the second enable signal en2 can be given by internal single-chip microcomputer.This area skill
Art personnel should be appreciated that the first enable signal en1 and second enable signal en2 can provide in any suitable way.
When charging device is left according to controlled battery charger of the present utility model, by enabling signal en by second
Mos pipe q2 is controlled to shutoff.When circuit input positive pole chr+ and circuit input negative pole chr- short circuit, due to the 2nd mos pipe q2
Turn off, and the electric current that its parasitic diode flows out with respect to circuit output positive pole bat+ is Opposite direction connection, therefore electric current is no
Method circulation is so that input port will not occur battery short circuit electric discharge phenomena when short-circuit.
By voltage sampling unit 40, charging device voltage is sampled it can be determined that this circuit whether with charging device
Both positive and negative polarity contact on, namely can determine this circuit whether on charging device.Can also judge to charge by sampled voltage
Whether the voltage of device is normal.Determine normal after recharge, it is to avoid because charging device electric voltage exception causes to battery to damage
Bad.
Fig. 2 shows the circuit diagram of the controlled battery charger according to an embodiment of the present utility model.
Alternatively, protection location 10 may further include electric capacity c1, c2 and resistance r8, r9.As shown in Fig. 2 electric capacity c1
With resistance r8 is connected in parallel between circuit input positive pole chr+ and the first control end of protection location 10, electric capacity c2 and resistance r9
It is connected in parallel between circuit output positive pole bat+ and the second control end of protection location 10.
Internal cell system due to charging device and operation has voltage difference, and inside charging device, output has big electrolysis electric
Hold, also have electrochemical capacitor and battery system internal resistance very little in battery charger input, therefore charging device connects battery and fills
Transient Currents can be produced during circuit, and lead to spark phenomenon.
According to the controlled charging battery circuit of an embodiment of the present utility model, the moment being electrically charged in input port,
Audion q3 turns on.Because electric capacity both end voltage can not be mutated, the equal i.e. electric capacity of the gate-source voltage of a mos pipe q1 under transient state
The voltage at c1 two ends is zero, but because the conducting of audion q3 makes electric capacity c1 charge by r3, and resistance r8 discharges to it, because
The voltage at this electric capacity c1 two ends slowly rises by zero, is finally reached the resistance r8 and resistance r3 partial pressure value to charging voltage.
Gate-source voltage due to a mos pipe q1 slowly increases so that a mos pipe works under linear condition from low to high, low
During pressure, its conducting resistance is larger, thus playing the effect of transient suppression electric current.Thus according to an embodiment of the present utility model
Controlled charging battery circuit it can be avoided that charging device connect this circuit moment produce spark phenomenon.
Alternatively, switch element 20 can include audion q3 and resistance r3, r4, r5.As shown in Fig. 2 resistance r4 and r5
It is connected in series between circuit input positive pole chr+ and circuit input negative pole chr-, the junction point of resistance r4 and r5 is switch element
20 input, the base stage of audion q3 is connected with the input of switch element 20 and colelctor electrode is connected with one end of resistance r3
Connect, the other end of resistance r3 is the outfan of switch element 20, audion q3 controls the break-make of a mos pipe q1.
In the case that battery does not have electricity completely, inside battery charger, there is no control signal, but be connected in circuit and fill
During electric installation, the partial pressure between resistance r4 and r5 makes q3 turn on, the therefore the first mos pipe conducting, and due to the 2nd mos pipe q2
With q1 Opposite direction connection, the parasitic diode of the therefore the 2nd mos pipe q2 directly turns on, so electric current still can flow through protection location
10 pairs of batteries are charged.Therefore, the controlled charging battery circuit of this embodiment can also work when battery does not have electricity completely, right
Battery is charged.
Alternatively, start control unit 30 and can include audion q5 and resistance r6, r7.As shown in Fig. 2 resistance r7 is in parallel
It is connected between base stage and the emitter stage of audion q5, the base stage of audion q5 is to start the input of control unit 30, input
Enable signal en, colelctor electrode is connected with one end of resistance r6, the other end of resistance r6 is the outfan starting control unit 30, with
Second control end of protection circuit 10 connects. enable the break-make that signal en controls the 2nd mos pipe q2.
When enabling signal en and being low level, the audion q5 starting in control unit 30 turns off so that protection location 10
In the 2nd mos pipe q2 turn off.I.e. the short-circuit protection control signal of this rechargeable battery circuit is to enable signal en for low level.
Alternatively, voltage sampling unit 40 can include resistance r10, r11 and diode d1 and Transient Suppression Diode
Z1, diode d1 and resistance r10, r11 are connected in series between circuit input positive pole chr+ and circuit input negative pole chr-, resistance
Junction point between r10 and r11 is the outfan vs of described voltage sampling unit, and Transient Suppression Diode z1 is connected in parallel defeated
Go out to hold between vs and circuit input negative pole chr-.
We are bright also to provide a kind of charger of the controlled battery charger including said structure.
It will be understood by those skilled in the art that the purpose of the description to embodiment of the present utility model above is only for exemplary
Ground illustrates the beneficial effect of embodiment of the present utility model, is not intended to be limited to embodiment of the present utility model given
Any example.
It is described above each embodiment of the present utility model, described above is exemplary, and non-exclusive, and
And it is also not necessarily limited to disclosed each embodiment.In the case of the scope and spirit without departing from illustrated each embodiment, for
For those skilled in the art, many modifications and changes will be apparent from.The choosing of term used herein
Select it is intended to best explain the principle of each embodiment, practical application or the improvement to the technology in market, or so that this technology is led
Other those of ordinary skill in domain are understood that each embodiment disclosed herein.
Claims (6)
1. a kind of controlled battery charger is it is characterised in that described circuit includes:
Protection location, described protection location includes a mos pipe q1, the 2nd mos pipe q2 and resistance r1, r2, a described mos pipe
Q1 and described 2nd mos pipe q2 Opposite direction connection and be connected in series in circuit input positive pole chr+ and circuit output positive pole bat+ it
Between, one end of resistance r1 is connected with the grid of a mos pipe q1, and the other end is as the first control end of described protection location, electricity
One end of resistance r2 is connected with the grid of the 2nd mos pipe q2, and the other end is as the second control end of described protection location；
Switch element, described switch element is connected between circuit input positive pole chr+ and circuit input negative pole chr-, outfan
It is connected with the first control end of described protection location, described switch element controls the break-make of a described mos pipe q1；
Start control unit, the input input of described startup control unit enables signal en, outfan and described protection location
Second control end connect, described start control unit control described 2nd mos pipe q2 break-make；And
Voltage sampling unit, described voltage sampling unit inputs positive pole chr+ to circuit and circuit inputs filling between negative pole chr-
Electric installation voltage is sampled.
2. controlled battery charger according to claim 1 is it is characterised in that described protection location further includes electricity
Hold c1, c2 and resistance r8, r9, electric capacity c1 and resistance r8 is connected in that circuit inputs positive pole chr+ and described protection location in parallel
Between one control end, electric capacity c2 and resistance r9 is connected in the second control of circuit output positive pole bat+ and described protection location in parallel
Between end.
3. controlled battery charger according to claim 1 is it is characterised in that described switch element includes audion q3
With resistance r3, r4, r5, resistance r4 and r5 is connected in series between circuit input positive pole chr+ and circuit input negative pole chr-, electric
The junction point of resistance r4 and r5 is the input of described switch element, and the base stage of audion q3 is connected with the input of described switch element
Connect and colelctor electrode is connected with one end of resistance r3, the other end of resistance r3 is the outfan of described switch element, described three poles
Pipe q3 controls the break-make of a mos pipe q1.
4. controlled battery charger according to claim 1 is it is characterised in that described startup control unit includes three poles
Pipe q5, resistance r6, r7, resistance r7 is connected in parallel between base stage and the emitter stage of audion q5, and the base stage of audion q5 is institute
State the input starting control unit, colelctor electrode is connected with one end of resistance r6, the other end of resistance r6 is that described startup controls
The outfan of unit, is connected with the second control end of described protection circuit.
5. controlled battery charger according to claim 1 is it is characterised in that described voltage sampling unit includes resistance
R10, r11 and diode d1 and Transient Suppression Diode z1, diode d1 and resistance r10, r11 are connected in series in circuit input
Between positive pole chr+ and circuit input negative pole chr-, the junction point between resistance r10 and r11 is the defeated of described voltage sampling unit
Go out and hold vs, Transient Suppression Diode z1 is connected in parallel between outfan vs and circuit input negative pole chr-.
6. a kind of charger is it is characterised in that include the controlled battery charger any one of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620690610.3U CN205911775U (en) | 2016-07-01 | 2016-07-01 | Controllable battery charging circuit and charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620690610.3U CN205911775U (en) | 2016-07-01 | 2016-07-01 | Controllable battery charging circuit and charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205911775U true CN205911775U (en) | 2017-01-25 |
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ID=57812793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620690610.3U Active CN205911775U (en) | 2016-07-01 | 2016-07-01 | Controllable battery charging circuit and charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205911775U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026277A (en) * | 2016-07-01 | 2016-10-12 | 北京云迹科技有限公司 | Controllable battery charging circuit and charger |
| CN108400394A (en) * | 2017-02-08 | 2018-08-14 | 瓦尔达微电池有限责任公司 | The electronic switching device and battery of battery management system |
-
2016
- 2016-07-01 CN CN201620690610.3U patent/CN205911775U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026277A (en) * | 2016-07-01 | 2016-10-12 | 北京云迹科技有限公司 | Controllable battery charging circuit and charger |
| CN108400394A (en) * | 2017-02-08 | 2018-08-14 | 瓦尔达微电池有限责任公司 | The electronic switching device and battery of battery management system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 702, 7th floor, NO.67, Beisihuan West Road, Haidian District, Beijing 100089 Patentee after: Beijing Yunji Technology Co.,Ltd. Address before: Room 201, building 4, yard 8, Dongbeiwang West Road, Haidian District, Beijing 100094 Patentee before: BEIJING YUNJI TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |