CN204761085U - Control circuit and have this control circuit's that charges laser instrument charges - Google Patents
Control circuit and have this control circuit's that charges laser instrument charges Download PDFInfo
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- CN204761085U CN204761085U CN201520430852.4U CN201520430852U CN204761085U CN 204761085 U CN204761085 U CN 204761085U CN 201520430852 U CN201520430852 U CN 201520430852U CN 204761085 U CN204761085 U CN 204761085U
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- resistance
- control circuit
- load circuit
- chargeable battery
- management chip
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Abstract
The utility model relates to a control circuit and have this control circuit's that charges laser instrument charges, the control circuit that charges, including input source, charge management chip, rechargeable battery and load circuit, the first end and the anodal of input source of charge management chip are connected, and the second end is connected with rechargeable battery's positive pole and load circuit's first end, rechargeable battery's negative pole, load circuit's second termination ground still include a diode, P type MOS pipe, resistance R1 and a resistance R2, anodal and the anodal of input source of diode are connected, and the negative pole is connected with load circuit's first end, P type MOS pipe connector is between the second of charge management chip end and load circuit's first end, and its drain electrode D is connected with the second end of charge management chip, and source electrode S is connected with load circuit's first end, and grid G passes through resistance R1 and is connected with the positive pole of input source, the negative pole that still passes through resistance R2 and the rechargeable battery ground connection of connecting in parallel. The utility model discloses it has charge control circuit's laser instrument of the aforesaid still to disclose one kind.
Description
Technical field
The utility model relates to charging circuit, particularly relates to a kind of charging control circuit controlling battery charging.
The utility model also relates to a kind of laser device with charging control circuit.
Background technology
Charge management circuit of the prior art, is only suitable for, when instrument shuts down, effectively charging to chargeable battery BT.But when instrument start work, because chargeable battery BT and load circuit are parallel relationship, cause charge control module cannot make correct detection to the cut-ff voltage BAT+ of chargeable battery BT, thus cause chargeable battery BT to be full of.The cycle life of this defect to chargeable battery BT has certain influence, simultaneously because chargeable battery BT off-capacity shortens the operating time of laser device, makes troubles to user.
Therefore, need badly and a kind ofly still can carry out to chargeable battery BT the charging control circuit that effectively intactly charges when instrument works.
Utility model content
In order to overcome above-mentioned technological deficiency, the purpose of this utility model is that providing a kind of still can carry out effective charging control circuit intactly charged to chargeable battery BT when instrument works.
The utility model discloses a kind of charging control circuit, comprise input source Vin, charging management chip, chargeable battery BT and load circuit; The first end of described charging management chip is connected with the positive pole of described input source Vin, and the second end is connected with the positive pole of described chargeable battery BT and the first end of described load circuit; Second end ground connection of the negative pole of described chargeable battery BT, described load circuit, also comprises a diode D1, P type metal-oxide-semiconductor T1, a resistance R1 and resistance R2; The positive pole of described diode D1 is connected with the positive pole of described input source Vin, and negative pole is connected with the first end of described load circuit; Described P type metal-oxide-semiconductor T1 is connected between the second end of described charging management chip and the first end of described load circuit, its drain D is connected with the second end of described charging management chip, source S is connected with the first end of described load circuit, grid G is connected with the positive pole of described input source Vin by described resistance R1, also passes through the negative pole earth of described resistance R2 and described chargeable battery.
Preferably, described resistance R1 is 1:10 with the ratio of the resistance of described resistance R2.
Preferably, the resistance of described resistance R1 is 10K Ω, and the resistance of described resistance R2 is 100K Ω.
Preferably, described diode D1 is Schottky diode.
Preferably, described chargeable battery is Ni-MH battery or lithium battery.
A kind of laser device, comprises housing, is located at the driver module in described housing and laser module, and described driver module drives described laser module to launch collimated light beam, and it is characterized in that, described driver module comprises charging control circuit as described above.
After have employed technique scheme, compared with prior art, there is following beneficial effect:
1. the charging control circuit meeting the utility model preferred embodiment when instrument work, can carry out effectively complete charging to chargeable battery BT.
2. the charging control circuit meeting the utility model preferred embodiment can detect the cut-ff voltage BAT+ of chargeable battery accurately, thus guarantee that chargeable battery is full of electricity, with the index request making reach Instrument Design its discharge time, also extend the service life cycle of chargeable battery simultaneously.
3. the charging control circuit meeting the utility model preferred embodiment can be applicable in laser device, improves driver module, extends the useful life of instrument.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the charging control circuit meeting the utility model preferred embodiment;
Fig. 2 is the equivalent electric circuit circuit diagram when not having external input sources;
Fig. 3 is the equivalent electric circuit circuit diagram when there being external input sources.
Reference numeral:
1-charging management chip;
2-load circuit.
Embodiment
Advantage of the present utility model is set forth further below in conjunction with accompanying drawing and specific embodiment.
As shown in Figure 1, be the circuit diagram of the charging control circuit meeting the utility model preferred embodiment, comprise input source Vin, charging management chip 1, chargeable battery BT and load circuit 2; The first end of charging management chip 1 is connected with the positive pole of input source Vin, and the second end is connected with the positive pole of chargeable battery BT and the first end of load circuit 2; The negative pole of chargeable battery BT, the second end ground connection of load circuit 2, also comprise a diode D1, P type metal-oxide-semiconductor T1, a resistance R1 and resistance R2; The positive pole of diode D1 is connected with the positive pole of input source Vin, and negative pole is connected with the first end of load circuit 2; P type metal-oxide-semiconductor T1 is connected between the second end of charging management chip 1 and the first end of load circuit 2, its drain D is connected with the second end of charging management chip 1, source S is connected with the first end of load circuit 2, grid G is connected with the positive pole of input source Vin by resistance R1, also passes through the negative pole earth of resistance R2 and chargeable battery.Wherein, input source Vin is the minus earth of input, power supply CN1 of being powered by the positive pole of power supply CN1; Charging management chip 1 for detecting the cut-ff voltage BAT+ of chargeable battery BT, to judge whether chargeable battery BT is full of electricity; Chargeable battery BT is battery pack, preferably, is a kind of Ni-MH battery or lithium battery; P type metal-oxide-semiconductor T1 and diode D1 then act as the charge switch effect of whole charging control circuit, preferably, diode D1 is Schottky diode, Schottky diode forward voltage drop is low, power consumption is little, reverse recovery time is little, also more much smaller than supper-fast recovery pipe, use Schottky diode can reduce the total power consumption of charging control circuit.
Preferably, resistance R1 is 1:10 with the ratio of the resistance of resistance R2, resistance R1 and resistance R2 can adjust accordingly according to this resistance ratio, to guarantee that the grid G voltage of the P type metal-oxide-semiconductor T1 when external input source Vin is close to the voltage of chargeable battery BT, can charge to chargeable battery BT effectively.More preferably, the resistance of resistance R1 is 10K Ω, and the resistance of resistance R2 is 100K Ω.
Operation principle of the present utility model is as follows:
As shown in Figure 2, when there is no the input of input source Vin, charging control circuit can be equivalent to the equivalent electric circuit that chargeable battery BT powers to load circuit 2, in this equivalent electric circuit, being connected in parallel on resistance R2 between the grid G of P type metal-oxide-semiconductor T1 and the negative pole of chargeable battery BT makes grid G be in low level state, make P type metal-oxide-semiconductor T1 be conducting state, electric current I 1 is powered to load circuit 2, the input power of what now chargeable battery BT served as is load circuit 2.Now P type metal-oxide-semiconductor T1 conducting, diode D1 ends.
As shown in Figure 3, when being loaded with external input sources Vin, charging control circuit can also give the chargeable battery BT equivalent electric circuit charged while just becoming and can powering to load circuit 2.In this equivalent electric circuit, the resistance R1 be connected between the grid G of P type metal-oxide-semiconductor T1 and input source Vin makes grid G be in high level state, make P shape metal-oxide-semiconductor T1 be cut-off state, thus the first end electric current of the second end and load circuit 2 that have blocked charging management chip 1 pass through; Simultaneously owing to being connected on the forward conduction characteristic of the diode D1 between the first end of load circuit 2 and input source Vin, make input source Vin directly and load circuit 2 conducting power for it.Therefore in this equivalent electric circuit, chargeable battery BT is not communicated with load circuit 2, does not power, then provides electric current I 1 for load circuit 2 is for electric forming loop by external input sources Vin; On the other hand, because external input sources Vin is communicated with charging management chip 1, therefore external input sources Vin can also provide electric current I 2 to charge to chargeable battery BT simultaneously, forms loop.Now P type metal-oxide-semiconductor T1 ends, diode D1 conducting.
In sum, owing to arranging a P type metal-oxide-semiconductor T1 and diode D1 on original charging control circuit, loading and do not loading in the two states of external input sources Vin, by the judgement of the low and high level state of the grid G of P type metal-oxide-semiconductor T1, the cut-off of control P type metal-oxide-semiconductor T1 and conducting, thus make diode D1 conducting and cut-off, finally realize the automatic switchover of the charging and discharging of chargeable battery BT.
The invention also discloses a kind of laser device, comprise housing, be located at the driver module in housing and laser module, driver module driving laser module launches collimated light beam, and wherein, driver module comprises above-mentioned charging control circuit.
The charging control circuit meeting the utility model preferred embodiment when instrument work, can carry out effectively complete charging to chargeable battery BT.The charging control circuit meeting the utility model preferred embodiment can detect the cut-ff voltage BAT+ of chargeable battery BT accurately, thus guarantee that chargeable battery BT is full of electricity, with the index request making reach Instrument Design its discharge time, also extend the service life cycle of chargeable battery BT simultaneously.The charging control circuit meeting the utility model preferred embodiment can be applicable in laser device, improves driver module, extends the useful life of instrument.
Should be noted that, embodiment of the present utility model has preferably implementation, and not any type of restriction is done to the utility model, any person skilled in art of being familiar with may utilize the technology contents of above-mentioned announcement change or be modified to equivalent effective embodiment, in every case the content of technical solutions of the utility model is not departed from, the any amendment done above embodiment according to technical spirit of the present utility model or equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (6)
1. a charging control circuit, comprises input source, charging management chip, chargeable battery and load circuit; The first end of described charging management chip is connected with the positive pole of described input source, and the second end is connected with the positive pole of described chargeable battery and the first end of described load circuit;
Second end ground connection of the negative pole of described chargeable battery, described load circuit, is characterized in that:
Also comprise a diode, P type metal-oxide-semiconductor, resistance R1 and a resistance R2;
The positive pole of described diode is connected with the positive pole of described input source, and negative pole is connected with the first end of described load circuit;
Described P type metal-oxide-semiconductor is connected between the second end of described charging management chip and the first end of described load circuit, its drain D is connected with the second end of described charging management chip, source S is connected with the first end of described load circuit, grid G is connected with the positive pole of described input source by described resistance R1, also passes through the negative pole earth of described resistance R2 and described chargeable battery.
2. charging control circuit as claimed in claim 1, it is characterized in that, described resistance R1 is 1:10 with the ratio of the resistance of described resistance R2.
3. charging control circuit as claimed in claim 2, it is characterized in that, the resistance of described resistance R1 is 10K Ω, and the resistance of described resistance R2 is 100K Ω.
4. charging control circuit as claimed in claim 1, it is characterized in that, described diode is Schottky diode.
5. charging control circuit as claimed in claim 1, it is characterized in that, described chargeable battery is Ni-MH battery or lithium battery.
6. a laser device, comprise housing, be located at the driver module in described housing and laser module, described driver module drives described laser module to launch collimated light beam, it is characterized in that, described driver module comprises the charging control circuit as described in any one of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520430852.4U CN204761085U (en) | 2015-06-19 | 2015-06-19 | Control circuit and have this control circuit's that charges laser instrument charges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520430852.4U CN204761085U (en) | 2015-06-19 | 2015-06-19 | Control circuit and have this control circuit's that charges laser instrument charges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204761085U true CN204761085U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520430852.4U Active CN204761085U (en) | 2015-06-19 | 2015-06-19 | Control circuit and have this control circuit's that charges laser instrument charges |
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| Country | Link |
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| CN (1) | CN204761085U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953657A (en) * | 2015-06-19 | 2015-09-30 | 常州华达科捷光电仪器有限公司 | Charge control circuit and laser instrument provided with same |
-
2015
- 2015-06-19 CN CN201520430852.4U patent/CN204761085U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953657A (en) * | 2015-06-19 | 2015-09-30 | 常州华达科捷光电仪器有限公司 | Charge control circuit and laser instrument provided with same |
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| GR01 | Patent grant |