CN103107566A - Lead-acid battery switching charging circuit with adjustable pulse width - Google Patents
Lead-acid battery switching charging circuit with adjustable pulse width Download PDFInfo
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- CN103107566A CN103107566A CN 201110361682 CN201110361682A CN103107566A CN 103107566 A CN103107566 A CN 103107566A CN 201110361682 CN201110361682 CN 201110361682 CN 201110361682 A CN201110361682 A CN 201110361682A CN 103107566 A CN103107566 A CN 103107566A
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Abstract
The invention discloses a lead-acid battery switching charging circuit with an adjustable pulse width. The lead-acid battery switching charging circuit with the adjustable pulse width is composed of a transient state retaining circuit and a negative temperature coefficient resistor element, wherein the transient state retaining circuit is applicable to a wide voltage range, and the negative temperature coefficient resistor element is used for detecting the temperature of a rechargeable battery. When the rechargeable battery is charged to saturation, and the temperature of the rechargeable battery rises to a set value, the resistance value of the negative temperature coefficient resistor element is reduced along with the rise of the temperature, further the circuit is manipulated to automatically stop and the current is converted a low current for keeping charging, moreover the rechargeable battery is cooled, and when the resistance value of the negative temperature coefficient resistor element rises again, or the low current is maintained for keeping a charging state in a set power source voltage changing range, a recovery function is generated when the rechargeable battery is taken down or a power source is cut off. The circuit can be further provided with a backflow diode to have a function of emergency automatic power supplying, so that the lead-acid battery switching charging circuit with the adjustable pulse width has the advantages of being simple in structure, low in cost and relatively high in reliability as an automatic temperature control circuit.
Description
Technical field
The present invention relates to the automatic temperature control circuit in a kind of lead-acid battery charging process, relate in particular to the charging circuit that a kind of temperature that is suitable for wide regulation of line voltage automatically detects and automatically controls.
Background technology
Traditional lead-acid battery charging temperature automatic control type circuit, to be detecting element by temperature detect switch (TDS), and the voltage or the current control device that are consisted of by many electronic components, battery in charging process is carried out automatic charge control, and when the saturated and temperature of rechargeable battery raises, by the detection of temperature detect switch (TDS), charging circuit is transferred to the less electric current of rechargeable battery input is done the maintenance charging.But existing lead-acid battery temperature automatic charging control circuit part is various, complex structure, and cost is higher and reliability is relatively poor.
Summary of the invention
Technical problem to be solved by this invention is: a kind of wide voltage charging of lead-acid battery and automatic circuit of controlling of temperature of being suitable for is provided, this charging circuit is applicable to the automatic control of the wide voltage charging of lead-acid battery and temperature, its automatic temperature control circuit simple structure, with low cost, reliability is higher.
the technical solution adopted for the present invention to solve the technical problems is: the lead-acid battery switching regulator charging circuit that pulsewidth of the present invention is adjustable, transient state holding circuit by applicable wide-voltage range, and consisted of by operation condition for the negative temperature coefficient resister element that detects the rechargeable battery temperature, when the saturated and rechargeable battery temperature of battery charging rises to set point, the negative temperature coefficient resister component temperature rises and reduces resistance value, and then control circuit automatic cut-off and be converted to little electric current and keep charging, and lower the temperature at rechargeable battery, when the negative temperature coefficient resister element resistance value gos up, or keep the maintenance charged state in setting the power supply voltage variation scope, and produce restoring function when taking off rechargeable battery or cutting off the electricity supply.
Described circuit by rechargeable battery the direct negative temperature coefficient resister element of indirect coupling, handle controllable silicon and cut off main charging current when rechargeable battery charging saturation temperature rise.Its main composition comprises: charge power supply can be for pure direct current, half-wave DC, full-wave direct current, pulsating direct current at intermittence and the ripple DC power supply is arranged.charge power supply can be the variable voltage source in stabilized voltage power supply or setting voltage excursion, rechargeable battery: but for the charging and discharging secondary battery that can mate temperature switch device and have temperature rises a when saturated feature, wide-voltage range is made of circuit elements such as solid-state electronic or motors, configure controlling for the negative temperature coefficient resister element that detects the rechargeable battery temperature for accepting rechargeable battery itself, and the negative temperature coefficient resister resistance reduces and then controls rectifier SCR and open circuit when the rechargeable battery charging is risen near saturation temperature, relending controllable silicon SCR anode A and the negative electrode K road shunt circuit that is close to arranged side by side consists of rechargeable battery maintenance charge function by less boost charge electric current, and has a maintenance charge function that can be applicable to keep in wide change in voltage scope the transient state holding circuit, with coupling than the change of money voltage range and interference-free, until power-off or rechargeable battery take off, and the transient state holding circuit is reduced.
The invention has the beneficial effects as follows: lead-acid battery charging and automatic temperature control circuit can be realized in wider voltage range the lead-acid battery charging, and circuit structure is simple, and with low cost, reliability is higher.
Description of drawings
The automatic charge cut-off circuit schematic diagram that Fig. 1 consists of for configuration negative temperature coefficient resister element;
Fig. 2 is that Fig. 1 circuit adds the backflow diode to have urgent automatic power functional circuit schematic diagram;
In figure:
AC transformer T100, exchange current-limiting impedance Z100, rectifier BR100,
Direct current current-limiting impedance means Z100, voltage stabilizing element VZ1000, rechargeable battery B101
Intercept diode CR102, controllable silicon SCR 101, current-limiting resistance R101
LED 101, LED102, overload protection element F101, anode A; , negative electrode K;
Trigger gate G, filament bulb L101, divider resistance R102, R111, triggering capacitor C 101
Optical coupler PC101, shunt resistance R100, negative temperature coefficient resister element NTC101
Voltage stabilizing didoe ZD101, ZD110, VZ110, be close to road shunt resistance R103, discharge diode CR101
Active resistance R 110, current-limiting resistance R112, backflow diode FD201.
Embodiment
The automatic charge cut-off circuit of employing negative temperature coefficient resister shown in Figure 1, its charge power supply contain pure direct current, half-wave DC, full-wave direct current, pulsating direct current at intermittence and the ripple DC power supply are arranged; Charge power supply can be the variable voltage source in stabilized voltage power supply or setting voltage excursion; Consisted of by following circuit element; AC transformer T100: for the input AC electric energy, secondary side is for the output AC electric energy for primary side, AC transformer can according to circuit need and selectivity is used or give up need not and direct input AC electric current;
Exchange current-limiting impedance Z100: for supplying to prevent capacitive character or inductive or the ohmic impedance component of load-side short circuit or exchange the current-limiting impedance device by the mixed type that the former two or more impedance structure closes, for being series between AC power and rectifier BR100, this exchanges current-limiting impedance Z100 selectivity setting according to need;
Direct current current-limiting impedance means Z100: be the element that elects according to need, when power supply be DC power supply or electric current for by the DC power supply of AC rectification not when the AC series connection exchanges current-limiting impedance Z100, can select to arrange by resistance or initiatively the direct current current-limiting impedance means that consists of of crystal and drive circuit be series between DC power supply and load-side, this direct current current-limiting impedance means Z100 selectivity setting according to need;
Voltage stabilizing element VZ1000: by the element that elects is according to need consisted of by voltage stabilizing didoe or by the forward bias voltage drop of diode group, so that voltage stabilizing function to be provided;
Rechargeable battery B101: for by the various rechargeable batteries of tool temperature rising characteristic when saturated, connect with intercepting diode CR102 and be forward with controllable silicon SCR 101;
Show and protective circuit: electing property arranges that current-limiting resistance R101 and LED 101 are in parallel consists of the Presentation Functions overload protection element F101 that connects again to rechargeable battery B101 with intercepting between diode CR102 and controllable silicon SCR 101 series circuits and charge power supply necessity that can be on demand, and then forward connects rear towards charge power supply with controllable silicon SCR 101 anode A with negative electrode K and rechargeable battery B101; Aforementioned current-limiting resistance R101 and luminous secondary body LED101 and overload protection element F101 also can be replaced by filament bulb L101, the selectivity setting according to need of this demonstration and protective circuit;
Divider resistance R102 is in series with triggering capacitor C 101, and one of divider resistance R102 pin end is connected in the rechargable power supplies positive pole, and the triggering capacitor C 101 pin other ends are connected with the crystal side of optical coupler PC101 and led to the triggering gate G of controllable silicon SCR 101 again; It is anodal that the anode of controllable silicon SCR 101 leads to charge power supply; Optical coupler PC101 output with trigger capacitor C 101 be connected in series a little and with negative electrode K between according to need selectivity set up stability and the trigger sensitivity that shunt resistance R100 in parallel flows with regulator;
Optical coupler PC101: for being made of input side light-emitting diode and the photoinduction crystal relative with light-emitting diode consists of outlet side, its input side is controlled for the negative temperature coefficient resister of accepting to be coupled in rechargeable battery; Its outlet side is for connecting with the gate of controllable silicon SCR 101;
Negative temperature coefficient resister element NTC101: contain by the negative temperature coefficient resister element and consisted of, coupling reduces its resistance value with the temperature rise with rechargeable battery for doing directly or indirectly with rechargeable battery B101.
show that reaching with LED 102 the voltage stabilizing didoe ZD101 that connects with LED102 is for consisting of pressure limiting and diverter function, be connected across between the tie point of divider resistance R102 and capacitor C 101 and charge power supply negative pole to produce pressure limiting and to be close to the road diverter function for being parallel connection, and its pressure-limiting function for can suppress power supply voltage variation the time to the interference of electric capacity side pressure, and the electric current of the voltage stabilizing didoe ZD101 that flows through (or the selectivity setting of further flowing through connect with voltage stabilizing didoe ZD101 LED 102) also is provided as to close in controllable silicon SCR 101 and rear rechargeable battery B101 is done boost charge, this demonstration and protective circuit can be according to the settings of needs selectivity.
Be close to road shunt resistance R103: for supplying when shutting down or taking off rechargeable battery as the discharge resistance that triggers capacitor C 101, when if the required boost charge electric current of rechargeable battery is larger, can add shunt resistance arranged side by side in selectivity between controllable silicon SCR 101 anode A and negative electrode K and keep charging current with relative increase, this is close to road shunt resistance R103 selectivity setting according to need;
Discharge diode CR101: between the negative electrode K and triggering gate G that are listed in controllable silicon SCR 101, its polarity triggers capacitor C 101 through being close to road shunt resistance R103 and above-mentioned discharge diode CR101 formation discharge circuit for making when rechargeable battery B101 takes off;
Stabilized voltage power supply: serving as reasons intercepts diode CR102 and is forward with the charge power supply output and be connected in series, and by the other end of its serial connection point and charge power supply, the stabilized voltage power supply that is in series by active resistance R 110 and voltage stabilizing didoe ZD110 for parallel connection; The two ends of voltage stabilizing didoe VZ110 are output end of stabilized voltage supply; Or can be by other solid-state or electromechanical voltage stabilizing circuit consisted of, this is close to road shunt resistance R103 selectivity setting according to need;
Bleeder circuit: for being connected with the input of optical coupler PC101 by current-limiting resistance R112, again with the negative temperature coefficient resister element parallel connection divider resistance R111 that jointly connects afterwards, be parallel to stabilized voltage power supply, this is close to road shunt resistance R103 selectivity setting according to need again.
The course of action of the described circuit of Fig. 1 is as follows:
when beginning rechargeable battery is charged, via divider resistance R102 to the triggering gate G of the momentary charge current trigger conducting controllable silicon SCR 101 that triggers capacitor C 101 and then trigger controllable silicon SCR 101 circuit is charged to battery B101 with the normal charging current value, when battery B101 raises near saturated and temperature, with its directly or indirectly the negative temperature coefficient resister element resistance value of coupling reduce, its both end voltage also reduces, the input side LED of optical coupler PC101 is extinguished, its outlet side is cut-off, controllable silicon SCR 101 water conservancy diversion are interrupted, and charging current is through being close to road shunt resistance R103 and the divider resistance R102 and identical with the synthetic side pressure of the flow through LED 102 with diverter function and the voltage stabilizing didoe ZD101 that flows through (and selected property string is established LED 102) that flows through, and be not subjected to the impact of power supply voltage variation,
When the reduction of negative temperature coefficient resister component temperature is risen its resistance value, no matter between the retentivity charge period or during involution, change in setting range as supply voltage, the current potential that triggers capacitor C 101 is constant, therefore the no current controllable silicon SCR 101 of flowing through triggers gate G, so controllable silicon SCR 101 continues to keep off state;
Complete when taking off battery B101 or cut off exchanging the input electric energy when charging, triggering 101 electric power storages of capacitor C can be through being close to road shunt resistance R103 and discharge diode CR101 discharge, circuit is recovered and is readiness to be triggered.In addition, previous embodiment can further add backflow diode FD201, for when power interruptions, and the load supplying that rechargeable battery can be driven through the former DC power supply C200 positive-negative output end of backflow diode pair.
Fig. 2 is that circuit shown in Figure 1 adds backflow diode FD201 to have urgent automatic power functional circuit, and its main composition comprises:
Backflow diode FD201: be parallel between rechargeable battery B101 anode and DC power supply C200 anode for being reverse;
Load: for being parallel to rechargeable battery B101 negative terminal and power positive end, drive load by the power supply electric energy when normal, change during current interruptions by backflow diode FD201 and consist of current supply circuit;
Trigger capacitor C 101: to stablize handoff procedure, can optionally select its capacitance or omit need not in parallel with load.
In the described example of Fig. 1, Fig. 2, can make following application choice under the invariable circuit principle:
(1) design as required the polarity of each element and series relationship with the polar relationship of coupling power supply and circuit;
(2) select as required just very being connected in positive source of rechargeable battery B101 and lead to power supply negative terminal by the negative electrode K of controllable silicon SCR 101; Or be connected in positive source and lead to power supply negative terminal by the negative pole of rechargeable battery B101 by the anode A of controllable silicon SCR 101.
(3) as required charging circuit element (negative temperature coefficient resister element NTC101) making is combined in charger, with charging circuit element and rechargeable battery make be combined into one or wherein the partial circuit element be arranged at charger, and other parts are arranged at rechargeable battery, and are connected to each other with conductive connecting device or contact or plugs and sockets.
in sum, the lead-acid battery switching regulator charging circuit that pulsewidth of the present invention is adjustable, take the automatic charge cut-off circuit that negative temperature coefficient resister element NTC101 is saturated to the accumulator jar charging and sensing temperature rising state consists of as operation condition that rechargeable battery was configured, can automatically be changed to the boost charge state when the battery charging is saturated, and can limit power supply voltage variation to the interference of electric capacity side pressure, and the electric current of the electric current of the divider resistance R102 that flows through and the shunt regulator diode ZD101 that flows through (reaching the generating diode (LED) 102 that the selectivity string is established) is as the boost charge to rechargeable battery, and further has the backflow diode to consist of urgent automatic power supply circuit function, thereby have simple in structure, with low cost, the positive advantage such as reliability height.
Claims (6)
1. lead-acid battery switching regulator charging circuit that pulsewidth is adjustable, it is characterized in that: comprise a transient state holding circuit, the backflow diode, and consist of for the negative temperature coefficient resister element that detects the lead accumulator temperature, when the saturated and rechargeable battery temperature of battery charging rises to set point, the negative temperature coefficient resister element rise to reduce resistance value with temperature, control circuit automatic cut-off and be converted to low current charge; And when battery cooling negative temperature coefficient resister element resistance value gos up, or keep the low current charge state in setting the power supply voltage variation scope, and reduction when taking off lead accumulator or cutting off the electricity supply.
2. the adjustable lead-acid battery switching regulator charging circuit of pulsewidth according to claim 1, it is characterized in that: also comprise an AC transformer (T100), exchanging current-limiting impedance (Z100) is series between AC power and rectifier (BR100), direct current current-limiting impedance (Z100) is series at DC power supply and load-side, the rechargeable battery of rechargeable battery (B101) tool temperature rising characteristic when saturated, intercept diode CR102 and be forward with controllable silicon (SCR101) and connect, current-limiting resistance (R101) is connected with light-emitting diode (LED101) parallel connection again, and overload protection element (F101) is rear forward connects rear towards the charge power supply negative pole with controllable silicon (SCR101) anode (A) and negative electrode (K) and rechargeable battery (B101), divider resistance (R102) is in series with triggering electric capacity (C101), divider resistance (R102) end connects with rechargable power supplies anodal, triggering electric capacity (C101) the pin other end is connected with the crystal side of optical coupler (PC101) and is led to the triggering gate (G) of controllable silicon (SCR101) again, it is anodal that the anode of controllable silicon (SCR101) leads to charge power supply, optical coupler (PC101) output with trigger electric capacity (C101) be connected in series a little reach with negative electrode (K) between set up shunt resistance in parallel (R100), optical coupler (PC101) consists of input side by light-emitting diode, the photoinduction crystal that light-emitting diode is relative consists of outlet side, its input side is controlled for the negative temperature coefficient resister of accepting to be coupled in rechargeable battery, its outlet side for controllable silicon (SCR101) between gate connect, negative temperature coefficient resister (NTC101) is done the temperature coupling with rechargeable battery (B101), show that reaching the voltage stabilizing didoe (ZD101) of connecting with (LED102) with light-emitting diode (LED102) is between the tie point and charge power supply negative pole that parallel connection is connected across divider resistance (R102) and electric capacity (C101), discharge diode (CR101) is parallel between the negative electrode (K) and gate (G) of controllable silicon (SCR101), its polarity is for can make electric capacity (C101) through being close to road shunt resistance (R103) and above-mentioned diode (CR101) forming circuit in rechargeable battery (B101) when taking off, stabilized voltage power supply is forward with the charge power supply output and is connected in series by intercepting diode (CR102), and be connected in series the other end of point and charge power supply by it, for the stabilized voltage power supply that is in series by active resistance (R110) and voltage stabilizing didoe (ZD110) in parallel, the two ends of voltage stabilizing didoe (VZ110) are output end of stabilized voltage supply, connected with the input of optical coupler (PC101) by current-limiting resistance (R112), again with the negative temperature coefficient resister element parallel connection divider resistance (R111) of jointly connecting afterwards, then be parallel to stabilized voltage power supply.
3. the adjustable lead-acid battery switching regulator charging circuit of described pulsewidth according to claim 1 and 2, it is characterized in that: can also add backflow diode (FD201), be parallel between rechargeable battery (B101) anode and DC power supply (C200) anode for being reverse; Load is parallel to rechargeable battery (B101) negative terminal and power positive end, drive load by the power supply electric energy when normal, change during current interruptions by backflow diode (FD201) formation current supply circuit, trigger electric capacity (C101) in parallel with load to stablize handoff procedure.
4. the adjustable lead-acid battery switching regulator charging circuit of pulsewidth according to claim 1, it is characterized in that: in circuit, the polarity of each element is with the polar relationship of series system coupling power supply and circuit.
5. the adjustable lead-acid battery switching regulator charging circuit of pulsewidth according to claim 1 is characterized in that: the positive pole that can select according to need rechargeable battery (B101) connects positive source and leads to power cathode by the negative electrode (K) of controllable silicon (SCR101); Or lead to power supply negative terminal by anode (A) the connection positive source of controllable silicon (SCR101) by the negative pole of rechargeable battery (B101).
6. the adjustable lead-acid battery switching regulator charging circuit of pulsewidth according to claim 1, it is characterized in that: negative temperature coefficient resister can be made and be combined in charger, or all or part of charging circuit element and rechargeable battery making are combined into one, and be connected to each other with plug and socket with wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110361682 CN103107566A (en) | 2011-11-15 | 2011-11-15 | Lead-acid battery switching charging circuit with adjustable pulse width |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110361682 CN103107566A (en) | 2011-11-15 | 2011-11-15 | Lead-acid battery switching charging circuit with adjustable pulse width |
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| CN103107566A true CN103107566A (en) | 2013-05-15 |
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| CN 201110361682 Pending CN103107566A (en) | 2011-11-15 | 2011-11-15 | Lead-acid battery switching charging circuit with adjustable pulse width |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992571A (en) * | 2017-05-18 | 2017-07-28 | 维沃移动通信有限公司 | A kind of half volt circuit guard method and mobile terminal |
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2011
- 2011-11-15 CN CN 201110361682 patent/CN103107566A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992571A (en) * | 2017-05-18 | 2017-07-28 | 维沃移动通信有限公司 | A kind of half volt circuit guard method and mobile terminal |
| CN106992571B (en) * | 2017-05-18 | 2018-09-04 | 维沃移动通信有限公司 | Half volt circuit guard method of one kind and mobile terminal |
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Addressee: Shanghai Weite Electronic & Electrical Appliance Co., Ltd. Document name: Notification of before Expiration of Request of Examination as to Substance |
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| DD01 | Delivery of document by public notice |
Addressee: Shanghai Weite Electronic & Electrical Appliance Co., Ltd. Document name: Notification that Application Deemed to be Withdrawn |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130515 |