CN101814747B - Charging circuit and charging method - Google Patents
Charging circuit and charging method Download PDFInfo
- Publication number
- CN101814747B CN101814747B CN200910105614.5A CN200910105614A CN101814747B CN 101814747 B CN101814747 B CN 101814747B CN 200910105614 A CN200910105614 A CN 200910105614A CN 101814747 B CN101814747 B CN 101814747B
- Authority
- CN
- China
- Prior art keywords
- signal
- reset
- circuit
- charging
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a charging circuit and a charging method, which are used for charging lead-acid cells. The charging circuit comprises a charging management circuit, a reset signal generation module and a reset circuit; the reset signal generation module is used for detecting the state of a rechargeable cell connected with the charging management circuit and generating a reset signal, and the reset circuit is connected in series between the charging management circuit and an input voltage, and is used for receiving the reset signal and controlling the charging management circuit to switch off and reset. When detecting the rechargeable cell connected with the charging management circuit by way of hot swap, the reset signal generation module generates a reset signal to switch off and reset the charging management circuit. The charging circuit and the charging method can ensure that the lead-acid cell can be completely charged without switching off a system when the cell is plugged and unplugged, thus realizing hot swap in the process of charging the lead-acid cell.
Description
Technical field
The present invention relates to battery boosting technology field, relate in particular to a kind of charging method of supporting the charging circuit of hot plug and supporting hot plug.
Background technology
Most of lead-acid batteries are when charging, can experience process as shown in Figure 1: constant current charge (the SABCD section in Fig. 1), constant voltage charge (the DEF section in Fig. 1), and the floating charge stage (the FGH section in Fig. 1), lead-acid battery, after charging finishes, will stay in the GH stage of floating charge.For general plumbic acid charger, complete charging process all can experience the SABCDEFGH stage, but finishes or after battery charging finishes to extract, charger will be in GH section when battery charging.Charger now considered to be in floating charge state, unless charger re-powers, otherwise charger can be always in this floating charge state.Now, if insert the voltage battery in float charge voltage scope just, charger can think that this battery has been full of electricity, and is positioned at the floating charge stage.This will cause when charger first powers on, and plumbic acid charger can run to a kind of floating charge state immediately, as long as not power-off of charger, plumbic acid charger can keep this state always.If now insert a charging voltage, surpass after the battery of float charge voltage, plumbic acid charger also can be limited in charging voltage within the scope of float charge voltage always, thereby causes the battery cannot full charging, and charger still takes for battery and is fully charged always.Now the disconnected electricity once of plumbic acid charger, just can correctly charge.Above situation all causes the charging of lead-acid battery not experience constant-voltage phase, thereby can not full charging pond, and this is just equivalent to existing plumbic acid charger and does not support hot plug.
And current application state, by user, changing battery rather than professional, to change the application places of battery more and more, and some equipment have not power-off requirement, for current application characteristic, make hot plug mode change the demand of battery more and more.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The invention provides a kind of charging circuit and charging method, when this circuit and method can make system plug battery in the situation that of not power-off, lead-acid battery is charged, realize the hot plug of lead-acid battery charging process.
The present invention solves the problems of the technologies described above adopted technical scheme to be:
A charging circuit, comprises charge management circuit, also comprises that reset signal forms module, and reset circuit;
Described reset signal forms module and for detection of rechargeable battery, accesses the state of described charge management circuit, forms reset signal;
Described reset circuit is connected between described charge management circuit and input voltage, for receiving described reset signal and controlling described charge management circuit power-off reset.
A charging method, comprises the following steps:
Whether A, detection rechargeable battery access charge management circuit in hot plug mode, are to perform step B;
B, by after described charge management circuit power-off reset, described rechargeable battery is charged.
Beneficial effect of the present invention is: the charging method that adopts charging circuit of the present invention and support hot plug, owing to inserting after charger when rechargeable battery being detected, can automatically to charge management circuit, carry out correct reset, thereby start new charge cycle, guaranteed when system plugs battery in the situation that of not power-off lead-acid battery to carry out complete charging process, therefore, realized the hot plug of lead-acid battery charging process.
Accompanying drawing explanation
Fig. 1 is that the voltage and current of lead-acid battery when charging changes schematic diagram;
Fig. 2 is that the present invention supports hot plug charging circuit embodiment theory diagram;
Fig. 3 is the first embodiment circuit diagram that the present invention includes signal formation module, reset circuit and charge management circuit;
Fig. 4 is that the present invention obtains plug signal schematic representation;
Fig. 5 is the second embodiment circuit diagram that the present invention includes signal formation module, reset circuit and charge management circuit;
Fig. 6 is low level reset signal schematic diagram;
Fig. 7 is the charging method flow chart that the present invention supports hot plug.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further details:
The charging circuit of the support hot plug that the present invention proposes is mainly used in the charging to lead-acid battery.Charging circuit comprises that charge management circuit, reset signal form module and reset circuit; Reset signal forms module for detection of the state of rechargeable battery access charge management circuit, forms reset signal, and reset circuit is connected between charge management circuit and input voltage, for receiving reset signal and controlling charge management circuit power-off reset.When reset signal forms module and rechargeable battery detected and access charge management circuit in hot plug mode, output reset signal is to reset circuit, and reset circuit is controlled charge management circuit power-off reset.
One embodiment of charging circuit as shown in Figure 2, comprises that charge management circuit, reset signal form module and reset circuit, and reset signal forms module and comprise battery plug detecting unit, and signal formation module.Battery plug detecting unit for to battery whether insertion detects, when battery inserts, battery plug detecting unit produces one and plugs the signal of telecommunication, i.e. BC signal; Signal formation module is connected with battery plug detecting unit, for judging the validity of plug signal, when signal formation module is confirmed, after hot plug effectively, to provide reset signal, thereby make reset circuit carry out complete reset to charge management circuit.Because forming module, reset signal comprises for judging the signal formation module of plug signal validity, therefore can identification and exclude the interference signal, labile state while avoiding plugging battery, and avoid because rechargeable battery repeats plug, causing repeatedly providing the infringement that reset signal brings reset circuit within the predetermined time.
In actual applications, in the time of can be by battery hot plug, detected light signal, mechanical signal convert the required signal of telecommunication of circuit to, that is, utilize mechanical switch or transducer to obtain plugging the signal of telecommunication.Before can setting battery and inserting, BC is low level, and after battery inserts, BC saltus step is high level, or BC insert before BC be high level, after inserting, BC is low level.One embodiment of battery plug detecting unit can be as shown in Figure 4, battery plug detecting unit comprises the second resistance R 2 and the mechanical switch K1 that series winding joins, one end of R2 connects an input voltage vin, one end ground connection of K switch 1, the plug electrical signal that the contact A of R2 and K switch 1 is this unit, is connected with signal formation module input.When inserting without battery, mechanical switch K1 is in off-state, contact A is output as high level, when battery inserts, utilize the physical size of battery that K switch 1 is clashed into and closed, contact A is output as low level, battery inserts moment, contact A has formed the plug signal of telecommunication from high level to low level variation, and while therefore having battery to insert, battery plug detecting unit can be exported the plug signal of telecommunication.
Charge management circuit, signal formation module and reset circuit can adopt multiple physical circuit to realize.One embodiment of charge management circuit, signal formation module and reset circuit as shown in Figure 3.Reset circuit comprises power switch pipe Q1 and signal amplifier tube Q2; Q1 is connected between charge management circuit and input voltage vin, and by signal amplifier tube, Q2 drives.Power switch pipe Q1 and signal amplifier tube Q2 exploitation triode, also can adopt field effect transistor (metal-oxide-semiconductor), and power switch pipe Q1 is metal-oxide-semiconductor in the present embodiment, and signal amplifier tube Q2 is triode.Q1 grid connects the collector electrode of Q2, and its source electrode connects input voltage vin, and its drain electrode is connected with charge management circuit.And the base stage of signal amplifier tube Q2 receives the reset signal of signal formation module output, its grounded emitter, power switch pipe conducting during the conducting of signal amplifier tube.Signal formation module adopts CPU to realize, and an I/O mouth of CPU connects the output of battery plug detecting unit, and another I/O mouth connects the input of reset circuit through the first resistance R 1.When the stable state of charging without battery or battery, CPU provides the signal of a normality high level, and to maintain the conducting of signal amplifier tube Q2 and the power switch pipe Q1 of reset circuit, this state is a kind of stable state; CPU detects the state of BC level saltus step, when CPU detects the saltus step of BC level, detect after the plug signal of telecommunication, the plug signal of telecommunication is carried out to the judgement of validity, after CPU judgement battery inserts effectively, provide a reset signal (RESET signal), this reset signal is illustrated in figure 6 negative pulse, and the duration Treset of reset signal is arranged to be greater than charge management circuit by signal formation module and carries out the power-off reset time, reset circuit receives after reset signal, and charge management circuit is carried out to power-off reset.Charge management circuit, after the processing procedure that experiences power down and re-power, has carried out correct reset, thereby has started new charge cycle.This is equivalent to charger is in power-up state not in a period of time after battery inserts, at battery, insert after confirmation, side re-powers, guaranteed when system plugs battery in the situation that of not power-off lead-acid battery to carry out complete charging process, therefore, realize the hot plug of lead-acid battery charging process, supported final lead-acid battery floating charge state.
In the embodiment shown in fig. 3, the judgement that CPU carries out validity to the plug signal of telecommunication comprises by the time delay debounce to the plug signal of telecommunication, reject the labile state that interference signal and rechargeable battery are not inserted into position, be also included in Preset Time repeatedly judgement and the processing of a plurality of plug signals of plug generation.For example described Preset Time is 10S, in 10S in CPU first first plug signal of telecommunication detecting is utilized the moving mode of time delay debounce to be confirmed to be to be available heat plug, provide immediately reset signal; And to the 2nd, 3 that repeatedly detect in 10S ... although the plug signal of telecommunication utilizes time delay debounce mode to be confirmed to be, be effective plug, but do not assert that the plug signal of telecommunication is useful signal, do not provide immediately reset signal, but when Preset Time 10S finishes, provide reset signal.Can avoid like this repeating plug at predetermined minimum period internal cause rechargeable battery and cause repeatedly providing the infringement that reset signal brings reset circuit power switch pipe Q1.
Signal formation module can also adopt a RC filter circuit and a monostable flipflop to realize, as shown in Figure 5, by R3 and C3, form RC filter circuit, RC filter circuit is connected with monostable flipflop, the input of described RC filter circuit connects the output of battery plug detecting unit, RC filter circuit is used for plug signal of telecommunication time delay debounce, and monostable flipflop output meets the reset signal of duration requirement.The signal formation module being comprised of RC filter circuit and monostable flipflop, its advantage is that circuit is simple, easily realizes.
The present invention also comprises a kind of charging method of supporting hot plug, its basic skills is: detect rechargeable battery and whether in hot plug mode, access charge management circuit, be, described charge management circuit carried out after power-off reset, then start described rechargeable battery to charge.
Idiographic flow as shown in Figure 7, comprises the steps:
Whether S1, detection rechargeable battery insert, and are to perform step S2;
S2, generation plug signal;
S3, to plug signal carry out time delay debounce;
S4, the minimum period that reset circuit trouble free service is set are Preset Time, for example 10S.According to plug signal, judge whether rechargeable battery is the insertion for the first time in described Preset Time, is to provide reset signal, otherwise execution step S5;
S5, while having a plurality of plug signal in described Preset Time, Preset Time described in time delay provides reset signal when described Preset Time finishes.For example, in Preset Time 10S, when CPU detects battery hot plug signal again, and in the effective situation of hot plug, do not provide immediately reset signal, but provide again reset signal after waiting for a Preset Time 10s.If CPU detects effective hot plug signal at short notice repeatedly, and the time interval be less than Preset Time 10s, only to last plug signal output RESET signal.
S6, reset circuit receive after described reset signal, and described charge management circuit is carried out to power-off reset, more described rechargeable battery are charged afterwards.
In above flow process, can also comprise and judge whether described rechargeable battery is the step of lead-acid battery, this step judged result if yes and other to results of validity judgement also for being to provide reset signal.Whether for example between step S3 and S4, add rechargeable battery is the determining step of lead-acid battery, this step judged result if yes and rechargeable battery be the insertion for the first time in Preset Time, provide reset signal.
Adopt the charging method of charging circuit of the present invention and support hot plug, owing to inserting after charger when rechargeable battery being detected, can automatically to charge management circuit, carry out correct reset, thereby start new charge cycle, therefore, in the time of can making system plug battery in the situation that of not power-off, lead-acid battery is charged, realized the hot plug of lead-acid battery charging process.
Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (11)
1. a charging circuit, comprises charge management circuit, it is characterized in that: also comprise that reset signal forms module, and reset circuit;
Described reset signal forms module and for detection of rechargeable battery, accesses the state of described charge management circuit, forms reset signal; Described reset signal forms module and comprises battery plug detecting unit, and signal formation module; Described battery plug detecting unit is for produce the plug signal of telecommunication when battery inserts, and described signal formation module is connected with described battery plug detecting unit, for the validity of the described plug signal of telecommunication is judged, provides described reset signal;
Described reset circuit is connected between described charge management circuit and input voltage, for receiving described reset signal and controlling described charge management circuit power-off reset.
2. charging circuit according to claim 1, is characterized in that: described reset circuit comprises power switch pipe and signal amplifier tube; Described power switch pipe is connected between described charge management circuit and input voltage, by described signal amplifier tube, is driven; The base stage of described signal amplifier tube receives described reset signal, its grounded emitter, its collector electrode connects described power switch pipe, during described signal amplifier tube conducting described in power switch pipe conducting.
3. charging circuit according to claim 2, is characterized in that: described power switch pipe is metal-oxide-semiconductor, and its grid connects the collector electrode of described signal amplifier tube, and its source electrode connects input voltage, and its drain electrode is connected with described charge management circuit.
4. charging circuit according to claim 1, it is characterized in that: described battery plug detecting unit comprises the second resistance and the mechanical switch of serial connection, one end of described the second resistance connects input voltage, one end ground connection of described mechanical switch, described the second resistance is connected with described signal formation module input with the contact of mechanical switch.
5. charging circuit according to claim 1, is characterized in that: described signal formation module comprises CPU, and described CPU comprises an I/O mouth and the 2nd I/O mouth; Described charging circuit also comprises the first resistance, and a described I/O mouth connects the output of described battery plug detecting unit, and described the 2nd I/O mouth connects the input of described reset circuit through described the first resistance.
6. charging circuit according to claim 1, is characterized in that: described signal formation module comprises a RC filter circuit and a monostable flipflop, the two series connection; The input of described RC filter circuit connects the output of described battery plug detecting unit, and described monostable flipflop is exported described reset signal.
7. according to the charging circuit described in the arbitrary claim of claim 1 to 6, it is characterized in that: the duration of described reset signal is greater than the time that described charge management circuit carries out power-off reset.
8. a charging method, is characterized in that, comprises the following steps:
Whether A, detection rechargeable battery access charge management circuit in hot plug mode, are to perform step B; Described steps A comprises the steps: whether A1, detection rechargeable battery insert, and is to produce plug signal; A2, to plug signal validity judge, provide reset signal;
B, by after described charge management circuit power-off reset, described rechargeable battery is charged.
9. charging method according to claim 8, is characterized in that: described steps A 2 comprises following processing:
A21, described plug signal is carried out to time delay debounce;
A22, foundation plug signal judge whether described rechargeable battery is the insertion for the first time in Preset Time, is to provide reset signal, otherwise execution step A23;
A23, while plugging signal in addition in described Preset Time, when finishing, described Preset Time provides reset signal.
10. charging method according to claim 8 or claim 9, is characterized in that: described step B comprises following processing: reset circuit receives after described reset signal, and charge management circuit is carried out to power-off reset.
11. charging methods according to claim 10, it is characterized in that: in described steps A 2, also comprise and judge whether described rechargeable battery is the step of lead-acid battery, this step judged result if yes and also other to results of validity judgement also for being to provide reset signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910105614.5A CN101814747B (en) | 2009-02-19 | 2009-02-19 | Charging circuit and charging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910105614.5A CN101814747B (en) | 2009-02-19 | 2009-02-19 | Charging circuit and charging method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101814747A CN101814747A (en) | 2010-08-25 |
| CN101814747B true CN101814747B (en) | 2014-05-07 |
Family
ID=42621896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910105614.5A Active CN101814747B (en) | 2009-02-19 | 2009-02-19 | Charging circuit and charging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101814747B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6720049B2 (en) * | 2016-10-26 | 2020-07-08 | 株式会社マキタ | Battery pack and charging system |
| CN108073260B (en) * | 2017-04-07 | 2021-04-06 | 丁贤根 | Overcharge resetting method and system |
| CN108944478B (en) * | 2017-05-17 | 2020-08-18 | 宝沃汽车（中国）有限公司 | Charging control method and device for electric automobile and electric automobile |
| CN115173508A (en) * | 2022-06-22 | 2022-10-11 | 上海派智能源有限公司 | Multistage battery power-off circuit and electronic control system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2338904Y (en) * | 1998-04-29 | 1999-09-15 | 张胜利 | Universal arrangement for charging battery |
| CN1267927A (en) * | 1999-03-18 | 2000-09-27 | 富士通株式会社 | Protection method, control circuit and battery apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416978C (en) * | 2005-12-30 | 2008-09-03 | 中兴通讯股份有限公司 | Charging controlling means realizing battery precharge without sampling and system thereof |
| CN101183797A (en) * | 2007-10-22 | 2008-05-21 | 冯建湘 | Charger protector for lithium ion battery pack |
-
2009
- 2009-02-19 CN CN200910105614.5A patent/CN101814747B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2338904Y (en) * | 1998-04-29 | 1999-09-15 | 张胜利 | Universal arrangement for charging battery |
| CN1267927A (en) * | 1999-03-18 | 2000-09-27 | 富士通株式会社 | Protection method, control circuit and battery apparatus |
Non-Patent Citations (2)
| Title |
|---|
| DC/DC变换器用"热插拔"冲击电流限制电路;金宏;《电子产品世界》;20011031(第10期);67-68 * |
| 金宏.DC/DC变换器用"热插拔"冲击电流限制电路.《电子产品世界》.2001,(第10期),67-68. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101814747A (en) | 2010-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102222949B (en) | Device and method for managing batteries | |
| CN102570520A (en) | Charging circuit and charging method thereof | |
| CN101938154B (en) | Terminal charging method, device and system | |
| CN102280670B (en) | Charging method for realizing automatic power control | |
| CN102738530B (en) | Wireless charging method of mobile terminal and wireless charging device | |
| CN101924383A (en) | Mobile terminal of automatically setting charging current and implementation method thereof | |
| CN103762690A (en) | Charging system | |
| CN101931110A (en) | Method for controlling heating of battery and device thereof | |
| CN101814747B (en) | Charging circuit and charging method | |
| CN201490745U (en) | Charger | |
| CN101924384B (en) | Mobile terminal and charging protection method and device thereof | |
| CN101470654A (en) | Mainboard test device | |
| CN109217425A (en) | A kind of charger circuit and its intelligent charge control method | |
| CN203205896U (en) | Charging circuit of battery pack | |
| CN202333884U (en) | Charging-discharging control system for parallel type lithium ion battery pack | |
| CN104795864A (en) | Mobile terminal capable of detecting charge state accurately and charge state detecting method | |
| CN101470655B (en) | Mainboard test device | |
| CN102624051B (en) | Mobile phone and charging protection circuit | |
| CN104917245A (en) | Charging management circuit, mobile terminal and charging control method of mobile terminal | |
| CN104270530A (en) | Method and device for preventing starting abnormity and mobile terminal | |
| CN102195271B (en) | For reducing the device of starting current of electronic equipment | |
| CN101902061B (en) | Method for controlling connection and disconnection of charge path of battery, circuit and battery | |
| CN102904309A (en) | Mobile equipment, as well as method and system for realizing constant-power-state mobile charging of mobile equipment | |
| CN203434650U (en) | Battery management device | |
| CN201781467U (en) | Time-delay start circuit of notebook PC |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180806 Address after: 518057 the 1-4 floor of MINDRAY building, science and technology south twelve Road, Nanshan District high tech Industrial Park, Shenzhen, Guangdong. Co-patentee after: SHENZHEN MINDRAY SCIENTIFIC Co.,Ltd. Patentee after: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS Co.,Ltd. Address before: 518057 MINDRAY science and technology south twelve road MINDRAY high tech Industrial Park, Shenzhen, Guangdong Patentee before: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20100825 Assignee: Shenzhen Mindray Animal Medical Technology Co.,Ltd. Assignor: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS Co.,Ltd. Contract record no.: X2022440020009 Denomination of invention: A charging circuit and charging method Granted publication date: 20140507 License type: Common License Record date: 20220804 |
|
| EE01 | Entry into force of recordation of patent licensing contract |