CN204794273U - Charging circuit with fill soon with trickle charge function - Google Patents
Charging circuit with fill soon with trickle charge function Download PDFInfo
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- CN204794273U CN204794273U CN201520569945.5U CN201520569945U CN204794273U CN 204794273 U CN204794273 U CN 204794273U CN 201520569945 U CN201520569945 U CN 201520569945U CN 204794273 U CN204794273 U CN 204794273U
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Abstract
The utility model provides a charging circuit with fill soon with trickle charge function, charging circuit includes: first diode D1, second diode D2, inductance L1, first electric capacity C1, second electric capacity C2, third electric capacity cdc, an electronic switch Q1, the 2nd electronic switch Q2 and PWM signal generator, PWM signal generator has two way pulse output, and the first via output CT1 be connected to an electronic switch Q1, second way output connection extremely the 2nd electronic switch Q2. Compared with the prior art, the utility model discloses a charging circuit has such advantage: 1, the volume is lighter than the circumstances that adopts super capacitor under the same capacity, 2, very wide operating temperature has, 3, can realize the quick charge under emergency, 4, can realize the conversion efficiency of trickle charge electricity with firm energy under normal condition.
Description
Technical field
The utility model relates to electronic applications, is specifically related to the portable charged circuit that a kind of alternative carries out quick charge or normal charging battery, in order to provide electric energy to mobile device.
Background technology
Along with the universal use of mobile device, capacity and the shortening charging interval of improving battery become a major challenge, the rhythm of life of people is constantly accelerated, complete battery charging within a short period of time to seem and be very necessary, the scheme of current quick charge is mainly and increases charging current or adopt super capacitor to replace battery.For quickly charging battery, its shortcoming has: 1, most high charge current is limited, and the charging interval of shortening is limited; 2, quick charge affects battery life, the even danger such as breaking out of fire; 3, charging times less (general 1000 times); 4, the temperature range of normal work is narrower.For the power supply of super capacitor composition, its shortcoming has: 1, energy density is little, larger than battery volume during identical capacity; 2, internal resistance is large, and transformation efficiency is low, is unfit to do permanent Power supply.Current super capacitor is mainly used in the field providing transient current and absorption and regeneration energy, and the application in portable power source is also less.In the utility model, adopt battery and super capacitor hybrid power supply, can in case of emergency quick charge, adopt in the ordinary course of things and charge normal, (-40 ~-10 DEG C) adopt super capacitor to power at low ambient temperatures.
Therefore, charging circuit of the prior art exist battery can not charging complete in the extremely short time, cell charging times is less, normal working temperature scope is narrower problem.And, there is the problem that super capacitor volume is large, conversion efficiency is low in prior art.
Utility model content
In order to solve the deficiency that existing charging circuit exists, the utility model is little desirable to provide a kind of volume, wide can the realization of working temperature fills the charging circuit with trickle charge two kinds of charging modes soon.
Specifically, the utility model provides a kind of and has the charging circuit filled soon with trickle charge function, it is characterized in that, described charging circuit comprises: the first diode D1, the second diode D2, inductance L 1, first electric capacity C1, the second electric capacity C2,3rd electric capacity Cdc, first electronic switch Q1, the second electronic switch Q2 and pwm signal generator, described pwm signal generator has two-way pulse and exports, the first via exports CT1 and is connected to described first electronic switch Q1, and the second tunnel exports and is connected to described second electronic switch Q2.Externally fed power supply is DC power supply, can be through the direct current input that civil power conversion is come.
Further; described first electric capacity C1 two ends are connected to positive pole V+ and the negative pole V-of externally fed power supply respectively; and described first electric capacity C1 and battery BT1 to be charged is connected in parallel; the positive pole place of described battery to be charged is connected with battery protection chip U1, is connected with described electric capacity C1 through this battery protection chip U1.
Further, the negative pole of described first diode D1 is connected to the positive pole V+ of described externally fed power supply, positive pole is connected to first port of described first electronic switch Q1, second port of described first electronic switch Q1 is connected to the first via output CT1 of described pwm signal generator, and the 3rd port of described first electronic switch Q1 is connected to the negative pole of described first diode D1.
Further, described first electronic switch Q1 and described second electronic switch Q2 adopts field effect transistor.
Further, the negative pole of described second diode D2 is connected to the positive pole of described first diode D1, the positive pole of described second diode D2 is connected to the negative pole V-of described externally fed power supply, further, the positive and negative electrode of described second diode D2 is connected with two ports of described second electronic switch Q2 respectively.
Further, described second electric capacity C2 and described 3rd electric capacity Cdc is connected in parallel to each other, and the two rear one end in parallel is connected to the negative pole V-that described inductance L 1 other end is connected to described externally fed power supply.
Further, described 3rd electric capacity Cdc is super capacitor.
Compared with prior art, the utility model equipment has the advantage of super capacitor and battery: 1, under identical capacity, do not have the volume of super capacitor large; 2, there is very wide working temperature; 3, in case of emergency quick charge can be realized; 4, charging battery can be realized under normal circumstances to ensure the conversion efficiency of electric energy; 5, longer than the life-span of battery.
Accompanying drawing explanation
Fig. 1 shows the structural representation of charging circuit in the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
As shown in Figure 1, in the present embodiment, charging circuit comprises: the first diode D1, the second diode D2, inductance L 1, first electric capacity C1, the second electric capacity C2,3rd electric capacity Cdc, first electronic switch Q1, the second electronic switch Q2 and pwm signal generator (not shown in FIG.), pwm signal generator has two-way pulse and exports, and the first via exports CT1 and is connected to the first electronic switch Q1, and the second tunnel exports and is connected to the second electronic switch Q2.3rd electric capacity Cdc adopts super capacitor.
First electric capacity C1 two ends are connected to positive pole V+ and the negative pole V-of externally fed power supply respectively; and the first electric capacity C1 and battery BT1 to be charged is connected in parallel; the positive pole place of battery to be charged is connected with battery protection chip U1, is connected with electric capacity C1 through this battery protection chip U1.
The negative pole of the first diode D1 is connected to the positive pole V+ of externally fed power supply, positive pole is connected to first port of the first electronic switch Q1, second port of the first electronic switch Q1 is connected to the first via output CT1 of pwm signal generator, and the 3rd port of the first electronic switch Q1 is connected to the negative pole of the first diode D1.First electronic switch Q1 and the second electronic switch Q2 adopts field effect transistor.The negative pole of the second diode D2 is connected to the positive pole of the first diode D1, and the positive pole of the second diode D2 is connected to the negative pole V-of externally fed power supply, and the positive and negative electrode of the second diode D2 is connected with two ports of the second electronic switch Q2 respectively.Second electric capacity C2 and the 3rd electric capacity Cdc is connected in parallel to each other, and the two rear one end in parallel is connected to the negative pole V-that inductance L 1 other end is connected to externally fed power supply.
As shown in Figure 1, Q1, Q2 adopt electronic switch (field effect transistor, triode etc.), and U1 is battery protection chip.PWM is pulse-width signal.V+, V-are power supply external interface, connect power consumption equipment or charger, and the voltage of super capacitor is lower than the minimum voltage of battery.
Referring to Fig. 1, charging process is described.
In trickle charge pattern, pulse generator does not work, and Q1, Q2 all disconnect, and external power source is charged to BT1 by battery protection chip; In fast mold filling formula, Q2 disconnects, and Q1 controls by pwm signal, when Q1 conducting, because the voltage of super capacitor Cdc voltage versus cell BT1 is low, current direction Cdc, to L1, C2, Cdc charging, when Q1 disconnects, C2 charges to Cdc, L1 is charged to Cdc by D2, by the frequency of pwm signal control Q1 break-make, realizes charging to Cdc step-down fast.
For discharge process: super capacitor discharge mode, Q1 disconnects, and Q2 controls by pwm signal; when Q2 conducting; Cdc charges to L1, and C1 discharges, when Q2 disconnects; Cdc and L1 is discharged by D1; by the frequency of pwm signal control Q2 break-make, realize Cdc step-up discharge, now super capacitor discharge voltage is higher than BT1 voltage; under protect IC U1 effect, BT1 does not externally export electric energy, does not form crossfire.Battery powered mode, Q1, Q2 all disconnect, and Cdc voltage is lower than BT1, BT1 supplying power for outside, and Cdc does not export electric energy, and do not form crossfire under D1 protection.
Powered by above-mentioned control realization different mode, be summarized as follows:
Trickle charge pattern: Q1, Q2 all disconnect
Fast mold filling formula: Q2 disconnects, and Q1 controls by pwm signal
Super capacitor discharges: Q1 disconnects, and Q2 controls by pwm signal
Battery discharge: Q1, Q2 all disconnect
The break-make of Q1 and Q2 can be controlled by pulse signal generator, and this is that those skilled in the art can realize, and no longer describes in detail here.
Although be described in detail principle of the present utility model in conjunction with preferred embodiment of the present utility model above, those skilled in the art should understand that, above-described embodiment is only the explanation to exemplary implementation of the present utility model, not the utility model is comprised to the restriction of scope.Details in embodiment does not form the restriction to the utility model scope; when not deviating from spirit and scope of the present utility model; the apparent changes such as any equivalent transformation based on technical solutions of the utility model, simple replacement, all drop within the utility model protection range.
Claims (8)
1. one kind has the charging circuit filled soon with trickle charge function, it is characterized in that, described charging circuit comprises: the first diode D1, the second diode D2, inductance L 1, first electric capacity C1, the second electric capacity C2,3rd electric capacity Cdc, first electronic switch Q1, the second electronic switch Q2 and pwm signal generator, described pwm signal generator has two-way pulse and exports, and the first via exports CT1 and is connected to described first electronic switch Q1, and the second tunnel exports CT2 and is connected to described second electronic switch Q2.
2. charging circuit according to claim 1; it is characterized in that; described first electric capacity C1 two ends are connected to positive pole V+ and the negative pole V-of externally fed power supply respectively; and described first electric capacity C1 and battery BT1 to be charged is connected in parallel; the positive pole place of described battery BT1 to be charged is connected with battery protection chip U1, is connected with described electric capacity C1 through described battery protection chip U1.
3. charging circuit according to claim 2, it is characterized in that, the negative pole of described first diode D1 is connected to the positive pole V+ of described externally fed power supply, positive pole is connected to first port of described first electronic switch Q1, second port of described first electronic switch Q1 is connected to the first via output CT1 of described pwm signal generator, and the 3rd port of described first electronic switch Q1 is connected to the negative pole of described first diode D1.
4. charging circuit according to claim 1, is characterized in that, described first electronic switch Q1 and described second electronic switch Q2 adopts field effect transistor.
5. charging circuit according to claim 3, it is characterized in that, the negative pole of described second diode D2 is connected to the positive pole of described first diode D1, the positive pole of described second diode D2 is connected to the negative pole V-of described externally fed power supply, further, the positive and negative electrode of described second diode D2 is connected with two ports of described second electronic switch Q2 respectively.
6. charging circuit according to claim 3, is characterized in that, described second electric capacity C2 and described 3rd electric capacity Cdc is connected in parallel to each other, and the two rear one end in parallel is connected to described inductance L 1, and the other end is connected to the negative pole V-of described externally fed power supply.
7. charging circuit according to claim 6, is characterized in that, the electric capacity of described 3rd electric capacity Cdc is greater than 10 times of described second electric capacity.
8. charging circuit according to claim 6, is characterized in that, described 3rd electric capacity Cdc is super capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520569945.5U CN204794273U (en) | 2015-07-31 | 2015-07-31 | Charging circuit with fill soon with trickle charge function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520569945.5U CN204794273U (en) | 2015-07-31 | 2015-07-31 | Charging circuit with fill soon with trickle charge function |
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| CN204794273U true CN204794273U (en) | 2015-11-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107284274A (en) * | 2017-07-11 | 2017-10-24 | 成都雅骏新能源汽车科技股份有限公司 | A kind of split type direct-current charging post |
| CN109177732A (en) * | 2018-08-28 | 2019-01-11 | 湖南金杯新能源发展有限公司 | The power control circuit of electric vehicle battery management system |
| CN110854982A (en) * | 2019-11-01 | 2020-02-28 | 天津合众汇能科技有限公司 | Battery interchange type capacitor module |
-
2015
- 2015-07-31 CN CN201520569945.5U patent/CN204794273U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107284274A (en) * | 2017-07-11 | 2017-10-24 | 成都雅骏新能源汽车科技股份有限公司 | A kind of split type direct-current charging post |
| CN109177732A (en) * | 2018-08-28 | 2019-01-11 | 湖南金杯新能源发展有限公司 | The power control circuit of electric vehicle battery management system |
| CN109177732B (en) * | 2018-08-28 | 2020-11-17 | 湖南金杯新能源发展有限公司 | Power supply control circuit of electric vehicle battery management system |
| CN110854982A (en) * | 2019-11-01 | 2020-02-28 | 天津合众汇能科技有限公司 | Battery interchange type capacitor module |
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