CN203406656U - Charging indication circuit - Google Patents
Charging indication circuit Download PDFInfo
- Publication number
- CN203406656U CN203406656U CN201320525846.8U CN201320525846U CN203406656U CN 203406656 U CN203406656 U CN 203406656U CN 201320525846 U CN201320525846 U CN 201320525846U CN 203406656 U CN203406656 U CN 203406656U
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- Prior art keywords
- diode
- gate
- controlled switch
- charging
- indicator light
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a charging indication circuit comprising a diode, a controllable switch and an indication lamp. The diode is used for being positively and serially connected between a charging terminal and a battery anode. The anode of the diode is grounded after passing through a switch channel of the controllable switch and the indication lamp. The cathode of the diode is connected with the control terminal of the controllable switch. When the diode is conducted, the controllable switch is switched on. According to the utility model, by employing the diode, a unidirectional charging circuit is formed, and the voltage drop between two ends of the diode is detected; and once the diode is of inverse-connection electric leakage, the controllable switch cuts off the power of a branch circuit where the indication lamp is positioned, so that indication errors due to the inverse-connection electric leakage of the diode is solved, unnecessary element loss is prevented, and usage experience of a user is improved.
Description
Technical field
The utility model relates to battery charging equipment technical field, is specifically related to a kind of charging indication.
Background technology
At present simple charging indicator light circuit mostly adopts the mode at resistance and the rear access of indicator light series connection charge power supply two ends, and the electric energy storage devices such as battery are connected with charge power supply, and during charging, indicator light is lighted.When battery is full of rear indicator light, still light, do not reach the indicative function being full of in electricity and charging process, and be full of rear LED lamp except artificial disconnection charger, LED is always in normal bright state, and stand-by power consumption is larger.And original LED charging indicator light circuit mostly adopts the mode at resistance and the rear access of indicator light series connection charge power supply two ends, as shown in Figure 1, when stopping charging, anti-electric leakage reason because of its charging diode D1, cause electric energy storage device to fill circuit is counter, cause indicator light still can send faint light, cause misdirection, thereby affect product quality, also to user, make troubles.
Utility model content
The utility model provides a kind of charging indication, can address the above problem.
A kind of charging indication that the utility model embodiment provides, comprise: diode, gate-controlled switch and indicator light, diode is serially connected between charging end and anode for forward, diode anode passes through switch passage and the indicator light ground connection of gate-controlled switch successively, diode cathode is connected with the control end of gate-controlled switch, during diode current flow, gate-controlled switch conducting.
Preferably, described gate-controlled switch is positive-negative-positive triode, and the emitter of this triode and collector electrode are as the switch passage of gate-controlled switch, and the base stage of this triode is as the control end of gate-controlled switch.
Preferably, on indicator light, be connected in series a current-limiting resistance.
Preferably, diode cathode connects the control end of gate-controlled switch through a biasing resistor.
Preferably, described indicator light is light-emitting diode.
Technique scheme can be found out, because adopting diode, the utility model embodiment forms unidirectional charge circuit, and the pressure drop of diode two ends is detected, once diode is counter, leak electricity, gate-controlled switch cuts off the power supply of indicator light place branch road, solve the misdirection causing because of the anti-electric leakage of diode, avoided unnecessary element loss, promoted user's experience.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the circuit theory diagrams of charging indication in prior art;
Fig. 2 is the circuit theory diagrams of charging indicator light circuit in the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making all other embodiment that obtain under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment:
The utility model embodiment provides a kind of charging indication, comprise: diode, gate-controlled switch and indicator light, diode is serially connected between charging end and anode for forward, diode anode passes through switch passage and the indicator light ground connection of gate-controlled switch successively, diode cathode is connected with the control end of gate-controlled switch, during diode current flow, gate-controlled switch conducting.
Specifically as shown in Figure 2, described gate-controlled switch is positive-negative-positive triode Q1, and the emitter of this triode Q1 and collector electrode are as the switch passage of gate-controlled switch, and the base stage of this triode Q1 is as the control end of gate-controlled switch.On indicator light, be connected in series a current-limiting resistance R2, diode D1 negative electrode connects the control end (base stage of triode Q1) of gate-controlled switch through a biasing resistor R1.In the utility model embodiment, indicator light adopts LED, have low in energy consumption, the advantage that cost is low.
Below in conjunction with Fig. 2, the operation principle of the charging indication in the utility model embodiment is made to concrete introduction.
It is anodal that charging indication has charging end J(power supply), this charging end is provided by charger or adapter, for battery provides charge power supply, charging current is that battery charges by the diode D1 that flows through on charging end, so the negative electrode of diode D1 is connected to the positive pole of battery.
When battery is during in low electric weight, anode voltage can be lower than the voltage at J place, charging end, make diode D1 two ends form pressure drop, diode D1 is switched on, be appreciated that, as long as the voltage (diode D1 anode voltage) at J place, charging end exceeds the conducting voltage (threshold voltage) that the value of anode voltage (diode D1 cathode voltage) is greater than diode D1, diode D1 can continue conducting.Because the emitter of positive-negative-positive triode Q1 connects the anode of diode D1, the base stage of triode Q1 connects the negative electrode of diode D1, now the emitter of triode Q1 and the PN junction between base stage are in forward bias state, conducting between the emitter of triode Q1 and collector electrode, the voltage at J place, charging end (anode voltage of diode D1) can be powered to LED through current-limiting resistance R2, LED, in illuminating state, represents that battery is in charged state.
When battery electric quantity is full, the voltage of anode equals or during close to the voltage at J place, charging end, the pressure drop at diode D1 two ends is about 0.Now, diode D1 is in cut-off state, certainly, the emitter voltage of triode Q1 equates with base voltage or is close, makes the emitter of triode Q1 and collector electrode in cut-off state, and triode Q1 cuts off the power supply of LED place branch road, light-emitting diode D1 extinguishes, now, the return circuit of diode D1 is also cut off, and the situation of the anti-electric leakage of diode D1 no longer occurs.
The charging indication above the utility model embodiment being provided is described in detail, applied specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof; , for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model meanwhile.
Claims (5)
1. charging indication, it is characterized in that, comprise: diode, gate-controlled switch and indicator light, diode is serially connected between charging end and anode for forward, diode anode passes through switch passage and the indicator light ground connection of gate-controlled switch successively, diode cathode is connected with the control end of gate-controlled switch, during diode current flow, and gate-controlled switch conducting.
2. charging indication as claimed in claim 1, is characterized in that, described gate-controlled switch is positive-negative-positive triode, and the emitter of this triode and collector electrode are as the switch passage of gate-controlled switch, and the base stage of this triode is as the control end of gate-controlled switch.
3. charging indication as claimed in claim 1 or 2, is characterized in that, is connected in series a current-limiting resistance on indicator light.
4. charging indication as claimed in claim 3, is characterized in that, diode cathode connects the control end of gate-controlled switch through a biasing resistor.
5. charging indication as claimed in claim 4, is characterized in that, described indicator light is light-emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525846.8U CN203406656U (en) | 2013-08-27 | 2013-08-27 | Charging indication circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525846.8U CN203406656U (en) | 2013-08-27 | 2013-08-27 | Charging indication circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203406656U true CN203406656U (en) | 2014-01-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320525846.8U Expired - Fee Related CN203406656U (en) | 2013-08-27 | 2013-08-27 | Charging indication circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203406656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311462A (en) * | 2019-08-05 | 2019-10-08 | 寿县楚光照明器具有限公司 | Small-sized electric car solar charging controller |
-
2013
- 2013-08-27 CN CN201320525846.8U patent/CN203406656U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311462A (en) * | 2019-08-05 | 2019-10-08 | 寿县楚光照明器具有限公司 | Small-sized electric car solar charging controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160822 Address after: 425000 Industrial Road, Hexi Industrial Zone, Lingling Industrial Zone, Lingling District, Yongzhou, Hunan Patentee after: Hunan tech-power Technology Co., Ltd. Address before: 518100 Guangdong city of Shenzhen province Baoan District Fuyong street community baishixia Longwangmiao Industrial Zone sixteenth, nineteenth Patentee before: Songshun Electronic (Shenzhen) Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20180827 |