CN102709985B - Modularized storage battery charging management system and charging management method - Google Patents
Modularized storage battery charging management system and charging management method Download PDFInfo
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- CN102709985B CN102709985B CN201210200444.0A CN201210200444A CN102709985B CN 102709985 B CN102709985 B CN 102709985B CN 201210200444 A CN201210200444 A CN 201210200444A CN 102709985 B CN102709985 B CN 102709985B
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Abstract
The invention provides a modularized storage battery charging management system and a storage battery charging management method. The storage battery charging management system comprises at least two parallel direct-current power modules, a protective module connected with the direct-current power modules, a storage battery pack connected to the direct-current power modules through the protective module, a load connected with the direct-current power modules, and a system monitoring module respectively connected with the direct-current power modules, the storage battery pack and the load, wherein the system monitoring module is used for monitoring output voltages of the direct-current power modules, charging current of the storage battery pack and current of the load; the system monitoring module communicates with the direct-current power modules and transmits control instructions; and the control instructions are used for setting the output voltages and the current limiting points of the direct-current power modules. By the system and the method, the charging current of the storage battery pack is limited at a charging current setting value all the time, a battery fuse or a circuit breaker of which the rated working current is matched with the maximum load current can be selected, and the cost is low.
Description
Technical field
The present invention relates to a kind of charge in batteries management, relate in particular to a kind of charging management system of modular battery cheaply and charging management method.
Background technology
Direct current system power supply core with storage battery is mainly comprised of DC power supply, monitoring and storage battery at present, overall system capacity, namely the output total current ability of DC power supply is maximum load current and battery charging electric current sum, considers some power module backups simultaneously; So, if power module backup is more, institute's real system total capacity that causes will be more much bigger than maximum load current.In this case, when selecting battery fuse and circuit breaker, its rated operational current and suitable with power module output total current ability, certainly will just cause the rated operational current of battery fuse and circuit breaker will be more much bigger than maximum load current, there is rated operational current and the unmatched problem of power module output total capacity, cause the increase of system cost, caused unnecessary electric weight waste.
Summary of the invention
Technical problem to be solved by this invention is need to provide a kind of can effectively solve rated operational current and the unmatched problem of DC power supplier output total capacity, can reduce the configuration of rated current in work loop, effectively cost-saving, efficient realization managed and controlled charge in batteries.
To this, the invention provides a kind of modular battery charging management system, comprising:
At least two DC power supplier parallel with one another;
Protection module, described protection module is connected with DC power supplier;
Batteries, described batteries is connected to DC power supplier by protection module;
Load, described load is connected with DC power supplier; And,
The system monitoring module being connected with DC power supplier, batteries and load respectively, wherein, described system monitoring module is for monitoring the output voltage of DC power supplier, the charging current of batteries and load current, described system monitoring module and DC power supplier realize communication and issue control command, and described control command is for setting output voltage and the current-limiting points of DC power supplier.
Wherein, described DC power supplier comprises a plurality of DC power supplier parallel with one another, is specially and comprises at least two DC power supplier parallel with one another, for realizing the supply of DC power supply; Described protection module, for occurring when abnormal realizing overvoltage/overcurrent protection in work loop, preferably includes battery fuse or circuit breaker; Described batteries is connected to DC power supplier by protection module, can occur in abnormal protecting batteries not to be destroyed in work loop, has also realized the Charge Management of batteries simultaneously; Described load is connected with DC power supplier, also by protection module, is connected with batteries and guarantees normal power supply; Described system monitoring module is connected with DC power supplier, batteries and load respectively, wherein, described system monitoring module is for monitoring the output voltage of DC power supplier, the charging current of batteries and load current, described system monitoring module and DC power supplier realize communication and issue control command, and described control command is for setting output voltage and the current-limiting points of DC power supplier.
The current-limiting points of described DC power supplier is the maximum current limit value of DC power supplier output, and such as the current-limiting points of DC power supplier is 20A, the exportable electric current of the maximum of DC power supplier is 20A.The course of work of the present invention is: first system monitoring module gathers charging current and the load current of batteries, after processing by analysis, to DC power supplier, issue again the control command of output voltage and current-limiting points, with this, guarantee that the charging current of batteries can not be greater than the charging current set point of batteries, the charging current limit value of described batteries can with set in advance, can be used in and regulating the output total current ability realize DC power supplier is maximum load current and battery charging electric current sum.Before not gathering the charging current and load current information of batteries, the output voltage of system monitoring module controls DC power supplier is for limiting magnitude of voltage, described stop voltage value is lower than the normal working voltage of batteries, in the time of can preventing charge in batteries management system electrifying startup or exchange to have a power failure after incoming call, battery charging electric current is excessive again.
Compared with prior art, its advantage is, the present invention proposes a charge in batteries management system that solves rated operational current and the unmatched problem of DC power supplier output total capacity, the charging current that is about to batteries is restricted to the charging current set point of batteries all the time, therefore can select the more protection module of small rated operating current, can select more battery fuse or the circuit breaker of small rated operating current, effectively cost-saving, avoided the waste of electric weight; In other words, be battery fuse or the circuit breaker that the present invention can select rated operational current and maximum load current to match, rather than selection and DC power supplier output total current ability the battery fuse or the circuit breaker that match, cost is low, and electric weight transformation efficiency is high.
Further improvement of the present invention is, the current-limiting points of described DC power supplier is the maximum current limit value of DC power supplier output, for limiting the output current value of DC power supplier.Described current-limiting points has limited the maximum output current value of DC power supplier; and total output current of DC power supplier comprises the charging current of load current and batteries; so; limit the output current value of DC power supplier; in the situation of proof load normal power supply; also be just equivalent to limit the charging current of batteries; therefore can select equally the more protection module of small rated operating current; can select more battery fuse or the circuit breaker of small rated operating current, effectively cost-saving.
Further improvement of the present invention is, the current-limiting points set point of described DC power supplier is
, wherein, described in
for the output current limiting point set point of single DC power supplier,
for load current value,
for charging current limit value, the n of batteries is the number of the DC power supplier of normal work.
The current-limiting points set point of described single DC power supplier depends on the number of the charging current limit value of load current value, batteries and the DC power supplier of normal work, can make rated operational current and DC power supplier output total capacity match, avoid the increase of the system cost that causes because do not mate, by controlling the current-limiting points of DC power supplier and then having guaranteed that charge in batteries is managed cheaply.
Further improvement of the present invention is, the voltage output value raising a volt of described DC power supplier, until batteries is no longer discharged, wherein, the span of a is 1 ~ 10.
After electrifying startup, system monitoring module starts initial pressure limiting to be controlled, and the output voltage of DC power supplier is transferred to initial stop voltage value, and described initial stop voltage value is lower than the normal working voltage of batteries; After initial pressure limiting has been controlled, system monitoring module issues pressure regulation order, DC power supplier output valve is improved to a volt, if batteries is still in discharge condition, still need increases a volt by DC power supplier output voltage at every turn, until batteries is no longer discharged, be about to the floating charge pressure point that DC power supplier output voltage is adjusted to batteries.Wherein, the large I of parameter a is according to actual conditions setting, generally a is 1 ~ 10, can be good at like this making the output voltage assurance batteries of DC power supplier just not discharge, and has guaranteed that the actual charge current of batteries is no more than the set point of its charging current.
Further improvement of the present invention is, described protection module comprises battery fuse or circuit breaker.The present invention can solve battery fuse or circuit breaker and the unmatched problem of modular DC power supplier output total capacity effectively, effectively reduces the rated current configuration of battery fuse or circuit breaker, has saved cost.
The present invention also provides a kind of charging management method that adopts above-mentioned modular battery charging management system, comprises the steps:
Step is controlled in initial pressure limiting, and after electrifying startup, system monitoring module starts initial pressure limiting to be controlled, and the output voltage of DC power supplier is transferred to initial stop voltage value, and described initial stop voltage value is lower than the normal working voltage of batteries;
Regulation Control step, after initial pressure limiting has been controlled, system monitoring module issues Regulation Control order, the voltage output value of DC power supplier is improved to a volt, and judge that whether batteries is in discharge condition, be to continue the voltage output value of DC power supplier to improve a volt until batteries is no longer discharged, be about to the output voltage pressure regulation of described DC power supplier to the floating charge pressure point of batteries;
Voltage is set step, in the output voltage pressure regulation of DC power supplier to floating charge pressure point, regulate the output voltage of DC power system to required floating voltage set point or even charging voltage set point, described floating voltage set point or even charging voltage set point preset according to actual needs; And,
Output current is controlled step, and voltage is set step and realized floating charge state or all fill after state, and DC power supplier is still in limited current state, and total output current of controlling DC power supplier is load current and battery charging current setting value sum.
Wherein, describedly all fill to determine electric current and the mode of fixing time to battery charging, charging is very fast, and even charging voltage set point is by all filling the magnitude of voltage setting, and all fills corresponding operating state for all filling state; Described float charge voltage output voltage pressure regulation to the batteries of described DC power supplier electrical voltage point when no longer discharging of naming a person for a particular job; The charging voltage of all filling is compared with floating charge and is wanted large; Floating charge, when batteries is during in full state, charger can not stop charging, still can provide constant float charge voltage to supply with batteries with very little floating current, and the magnitude of voltage that floating voltage set point sets by floating charge, the corresponding operating state of floating charge is floating charge state; At output current, control in step, system is adjusted to floating charge state or all fills after state, DC power supplier is still in limited current state, total output current that DC power supplier is set equals load current+battery charge set point, and the actual charge current that can guarantee floating charge state or all fill batteries under state can not surpass its set point.
In the middle of the normal work of DC power supplier, if there is the variation of load current, need according to formula
recalculate the output current limiting set point of DC power supplier
, and carry out the adjusting of DC power supplier current-limiting points.
Compared with prior art, the present invention is after electrifying startup, first system monitoring module starts initial pressure limiting and controls step, DC power supplier voltage is transferred to initial stop voltage value, this initial stop voltage value is lower than the voltage of normal batteries, battery charge is excessive in the time of can preventing electrifying startup or after the incoming call that exchange to have a power failure again, and further by Regulation Control step, voltage is set the cooperation of step and output current control step, total output current of DC power supplier is controlled in real time as load current and battery charging current setting value sum, realized rated operational current and maximum load current matches, cost is low.
Further improvement of the present invention is, in described Regulation Control step and voltage setting step, arranges all the time
, wherein, described in
for the output current limiting point set point of single DC power supplier,
for load current value,
for charging current limit value, the n of batteries is the number of the DC power supplier of normal work.
The current-limiting points set point of described single DC power supplier depends on the number of the charging current limit value of load current value, batteries and the DC power supplier of normal work, can make rated operational current carry out real-time mating with DC power supplier output total capacity, avoid the increase of the system cost that causes because do not mate, by controlling the current-limiting points of DC power supplier and then having guaranteed that charge in batteries is managed cheaply.
Further improvement of the present invention is, the processing procedure that is incorporated to of described DC power supplier is: the DC power supplier newly powering on is first kept to holding state, and carry out communication with system monitoring module, obtain the magnitude of voltage of current charge in batteries management system output, keep the output voltage values of DC power supplier consistent with the magnitude of voltage of current charge in batteries management system output, and be 0 by the electric current export-restriction of DC power supplier; Described system monitoring module is according to formula
recalculate the set point of the output current limiting point of DC power supplier
, and being handed down to all DC power supplier, described DC power supplier is received the adjusting of carrying out current-limiting points after the set point adjustment order of current-limiting points.
Further improvement of the present invention is, the processing procedure that exits of described DC power supplier is: when having DC power supplier occur communication failure or need to log off, whether the remaining total output current ability of DC power supplier that can proper communication of judgement is greater than
, if so, according to formula
, recalculate the set point of current-limiting points, and then the current-limiting points of each DC power supplier be set; If not, that the cut-off current modulation of DC power supplier is maximum, the regular supply of proof load electric current.
Beneficial effect of the present invention is, can solve rated operational current and the unmatched problem of DC power supplier output total capacity, the present invention is restricted to the charging current of batteries the charging current set point of batteries all the time, therefore can select the more protection module of small rated operating current, can select more battery fuse or the circuit breaker of small rated operating current, effectively cost-saving, avoided the waste of electric weight; In other words, battery fuse or circuit breaker that the present invention can select rated operational current and maximum load current to match, rather than selection and DC power supplier output total current ability the battery fuse or the circuit breaker that match, cost is low, and electric weight transformation efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is that the system of the embodiment of the present invention 4 starts control flow chart;
Fig. 3 is that the DC power supplier of the embodiment of the present invention 5 is incorporated to process chart;
Fig. 4 is that the DC power supplier of the embodiment of the present invention 6 exits process chart.
Embodiment
Below in conjunction with accompanying drawing, preferably embodiment of the present invention is described in further detail:
Embodiment 1:
As shown in Figure 1, this example provides a kind of modular battery charging management system, comprising:
At least two DC power supplier parallel with one another;
Protection module, described protection module is connected with DC power supplier;
Batteries, described batteries is connected to DC power supplier by protection module;
Load, described load is connected with DC power supplier; And,
The system monitoring module being connected with DC power supplier, batteries and load respectively, wherein, described system monitoring module is for monitoring the output voltage of DC power supplier, the charging current of batteries and load current, described system monitoring module and DC power supplier realize communication and issue control command, and described control command is for setting output voltage and the current-limiting points of DC power supplier.
Wherein, described DC power supplier comprises a plurality of DC power supplier parallel with one another, and for realizing the supply of DC power supply, Fig. 1 represents to DC power supplier n by DC power supplier 1, and n is greater than 1 natural number; Described protection module, for occurring when abnormal realizing overvoltage/overcurrent protection in work loop, preferably includes battery fuse or circuit breaker; Described batteries is connected to DC power supplier by protection module, can occur in abnormal protecting batteries not to be destroyed in work loop, has also realized the Charge Management of batteries simultaneously; Described load is connected with DC power supplier, also by protection module, is connected with batteries and guarantees normal power supply; Described system monitoring module is connected with DC power supplier, batteries and load respectively, wherein, described system monitoring module is for monitoring the output voltage of DC power supplier, the charging current of batteries and load current, described system monitoring module and DC power supplier realize communication and issue control command, and described control command is for setting output voltage and the current-limiting points of DC power supplier.
The current-limiting points of described DC power supplier is the maximum current limit value of DC power supplier output, and such as the current-limiting points of DC power supplier is 20A, the exportable electric current of the maximum of DC power supplier is 20A.This routine course of work is: first system monitoring module gathers charging current and the load current of batteries, after processing by analysis, to DC power supplier, issue again the control command of output voltage and current-limiting points, with this, guarantee that the charging current of batteries can not be greater than the charging current set point of batteries, the charging current limit value of described batteries can with set in advance, can be used in and regulating the output total current ability realize DC power supplier is maximum load current and battery charging electric current sum.Before not gathering the charging current and load current information of batteries, the output voltage of system monitoring module controls DC power supplier is for limiting magnitude of voltage, described stop voltage value is lower than the normal working voltage of batteries, in the time of can preventing charge in batteries management system electrifying startup or exchange to have a power failure after incoming call, battery charging electric current is excessive again.
For example, for being the batteries that 12V battery forms by 20 joint nominal voltages, stop voltage value is generally made as 200V ~ 240V, and the stop voltage value of corresponding single-unit 12V battery is between 10 ~ 12V; For being the batteries that 2V battery forms by 24 joint nominal voltages, stop voltage value is generally made as 40V ~ 48V, and the stop voltage value of corresponding single-unit 2V battery is between 1.67 ~ 2V.
Compared with prior art, its advantage is, this example has proposed a charge in batteries management system that solves rated operational current and the unmatched problem of DC power supplier output total capacity, the charging current that is about to batteries is restricted to the charging current set point of batteries all the time, therefore can select the more protection module of small rated operating current, can select more battery fuse or the circuit breaker of small rated operating current, effectively cost-saving, avoided the waste of electric weight; In other words, be battery fuse or the circuit breaker that this example can select rated operational current and maximum load current to match, rather than selection and DC power supplier output total current ability the battery fuse or the circuit breaker that match, cost is low, and electric weight transformation efficiency is high.
This routine described protection module comprises battery fuse or circuit breaker.This example can solve battery fuse or circuit breaker and the unmatched problem of modular DC power supplier output total capacity effectively, effectively reduces the rated current configuration of battery fuse or circuit breaker, has saved cost.
Embodiment 2:
On the basis of embodiment 1, the current-limiting points of this routine described DC power supplier is the maximum current limit value of DC power supplier output, for limiting the output current value of DC power supplier.Described current-limiting points has limited the maximum output current value of DC power supplier; and total output current of DC power supplier comprises the charging current of load current and batteries; so; limit the output current value of DC power supplier; in the situation of proof load normal power supply; also be just equivalent to limit the charging current of batteries; therefore can select equally the more protection module of small rated operating current; can select more battery fuse or the circuit breaker of small rated operating current, effectively cost-saving.
The further improvement of this example is, the current-limiting points set point of described DC power supplier is
, wherein, described in
for the output current limiting point set point of single DC power supplier,
for load current value,
for charging current limit value, the n of batteries is the number of the DC power supplier of normal work.
The current-limiting points set point of described single DC power supplier depends on the number of the charging current limit value of load current value, batteries and the DC power supplier of normal work, can make rated operational current and DC power supplier output total capacity match, avoid the increase of the system cost that causes because do not mate, by controlling the current-limiting points of DC power supplier and then having guaranteed that charge in batteries is managed cheaply.
Embodiment 3:
On the basis of embodiment 2, the voltage output value of this routine described DC power supplier improves a volt, until batteries is no longer discharged, wherein, the span of a is 1 ~ 10.
After electrifying startup, system monitoring module starts initial pressure limiting to be controlled, and the output voltage of DC power supplier is transferred to initial stop voltage value, and described initial stop voltage value is lower than the normal working voltage of batteries; After initial pressure limiting has been controlled, system monitoring module issues pressure regulation order, DC power supplier output valve is improved to a volt, if batteries is still in discharge condition, still need increases a volt by DC power supplier output voltage at every turn, until batteries is no longer discharged, be about to the floating charge pressure point that DC power supplier output voltage is adjusted to batteries.Wherein, the large I of parameter a is according to actual conditions setting, generally a is 1 ~ 10, can be good at like this making the output voltage assurance batteries of DC power supplier just not discharge, and has guaranteed that the actual charge current of batteries is no more than the set point of its charging current.
Embodiment 4:
This example also provides a kind of charging management method that adopts the modular battery charging management system of above-described embodiment, comprises the steps:
Step is controlled in initial pressure limiting, and after electrifying startup, system monitoring module starts initial pressure limiting to be controlled, and the output voltage of DC power supplier is transferred to initial stop voltage value, and described initial stop voltage value is lower than the normal working voltage of batteries;
Regulation Control step, after initial pressure limiting has been controlled, system monitoring module issues Regulation Control order, the voltage output value of DC power supplier is improved to a volt, and judge that whether batteries is in discharge condition, be to continue the voltage output value of DC power supplier to improve a volt until batteries is no longer discharged, be about to the output voltage pressure regulation of described DC power supplier to the floating charge pressure point of batteries;
Voltage is set step, in the output voltage pressure regulation of DC power supplier to floating charge pressure point, regulate the output voltage of DC power system to required floating voltage set point or even charging voltage set point, described floating voltage set point or even charging voltage set point preset according to actual needs; And,
Output current is controlled step, and voltage is set step and realized floating charge state or all fill after state, and DC power supplier is still in limited current state, and total output current of controlling DC power supplier is load current and battery charging current setting value sum.
Wherein, this routine system starts control flow chart as shown in Figure 2, and in figure, what I_Dset represented is
, i.e. the output current limiting point set point of single DC power supplier; What I_Load represented is
, i.e. load current value; What I_Bset represented is
, i.e. the charging current limit value of batteries; Describedly all fill to determine electric current and the mode of fixing time to battery charging, charging is very fast, and even charging voltage set point is by all filling the magnitude of voltage setting, and all fills corresponding operating state for all filling state; Described float charge voltage output voltage pressure regulation to the batteries of described DC power supplier electrical voltage point when no longer discharging of naming a person for a particular job; The charging voltage of all filling is compared with floating charge and is wanted large; Floating charge, when batteries is during in full state, charger can not stop charging, still can provide constant float charge voltage to supply with batteries with very little floating current, and the magnitude of voltage that floating voltage set point sets by floating charge, the corresponding operating state of floating charge is floating charge state; At output current, control in step, system is adjusted to floating charge state or all fills after state, DC power supplier is still in limited current state, total output current that DC power supplier is set equals load current+battery charge set point, and the actual charge current that can guarantee floating charge state or all fill batteries under state can not surpass its set point.
In the middle of the normal work of DC power supplier, if there is the variation of load current, need according to formula
recalculate the output current limiting set point of DC power supplier
, and carry out the adjusting of DC power supplier current-limiting points.
Compared with prior art, this example is after electrifying startup, first system monitoring module starts initial pressure limiting and controls step, DC power supplier voltage is transferred to initial stop voltage value, this initial stop voltage value is lower than the voltage of normal batteries, battery charge is excessive in the time of can preventing electrifying startup or after the incoming call that exchange to have a power failure again, and further by Regulation Control step, voltage is set the cooperation of step and output current control step, total output current of DC power supplier is controlled in real time as load current and battery charging current setting value sum, realized rated operational current and maximum load current matches, cost is low.
The further improvement of this example is, in described Regulation Control step and voltage setting step, arranges all the time
, wherein, described in
for the output current limiting point set point of single DC power supplier,
for load current value,
for charging current limit value, the n of batteries is the number of the DC power supplier of normal work.
The current-limiting points set point of described single DC power supplier depends on the number of the charging current limit value of load current value, batteries and the DC power supplier of normal work, can make rated operational current carry out real-time mating with DC power supplier output total capacity, avoid the increase of the system cost that causes because do not mate, by controlling the current-limiting points of DC power supplier and then having guaranteed that charge in batteries is managed cheaply.
Embodiment 5:
As shown in Figure 3, in Fig. 3, what I_Dset represented is
, i.e. the output current limiting point set point of single DC power supplier; What I_Load represented is
, i.e. load current value; What I_Bset represented is
, i.e. the charging current limit value of batteries; On the basis of embodiment 4, the processing procedure that is incorporated to of this routine described DC power supplier is: the DC power supplier newly powering on is first kept to holding state, and carry out communication with system monitoring module, obtain the magnitude of voltage of current charge in batteries management system output, keep the output voltage values of DC power supplier consistent with the magnitude of voltage of current charge in batteries management system output, and be 0 by the electric current export-restriction of DC power supplier; Described system monitoring module is according to formula
recalculate the set point of the output current limiting point of DC power supplier
, and being handed down to all DC power supplier, described DC power supplier is received the adjusting of carrying out current-limiting points after the set point adjustment order of current-limiting points.
This example is 0 by the electric current export-restriction of DC power supplier, also can change into output switch is remained open to state to realize.
Embodiment 6:
As shown in Figure 4, in Fig. 4, what I_Dset represented is
, i.e. the output current limiting point set point of single DC power supplier; What I_Load represented is
, i.e. load current value; What I_Bset represented is
, i.e. the charging current limit value of batteries; On the basis of embodiment 3 or embodiment 4, the processing procedure that exits of this routine described DC power supplier is: when having DC power supplier occur communication failure or need to log off, whether the remaining total output current ability of DC power supplier that can proper communication of judgement is greater than
, if so, according to formula
, recalculate the set point of current-limiting points, and then the current-limiting points of each DC power supplier be set; If not, that the cut-off current modulation of DC power supplier is maximum, the regular supply of proof load electric current.DC power supplier need to log off except there is communication failure, can also need exit because of other situations, described DC power supplier to exit processing procedure real the same.
This routine beneficial effect is, can solve rated operational current and the unmatched problem of DC power supplier output total capacity, this example is restricted to the charging current of batteries the charging current set point of batteries all the time, therefore can select the more protection module of small rated operating current, can select more battery fuse or the circuit breaker of small rated operating current, effectively cost-saving, avoided the waste of electric weight; In other words, battery fuse or circuit breaker that this example can select rated operational current and maximum load current to match, rather than selection and DC power supplier output total current ability the battery fuse or the circuit breaker that match, cost is low, and electric weight transformation efficiency is high.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (5)
1. a charging management method for modular battery charging management system, is characterized in that, described modular battery charging management system, comprising:
At least two DC power supplier parallel with one another;
Protection module, described protection module is connected with DC power supplier;
Batteries, described batteries is connected to DC power supplier by protection module;
Load, described load is connected with DC power supplier; And,
The system monitoring module being connected with DC power supplier, batteries and load respectively, wherein, described system monitoring module is for monitoring the output voltage of DC power supplier, the charging current of batteries and load current, described system monitoring module and DC power supplier realize communication and issue control command, and described control command is for setting output voltage and the current-limiting points of DC power supplier;
The current-limiting points of described DC power supplier is the maximum current limit value of DC power supplier output, for limiting the output current value of DC power supplier; The current-limiting points set point of described DC power supplier is
wherein, described I
dsetoutput current limiting point set point, I for single DC power supplier
loadfor load current value, I
bsetfor charging current limit value, the n of batteries is the number of the DC power supplier of normal work;
The voltage output value of described DC power supplier improves a volt, until batteries is no longer discharged, wherein, the span of a is 1～10; Described protection module comprises battery fuse or circuit breaker;
Described charging management method comprises the steps:
Step is controlled in initial pressure limiting, and after electrifying startup, system monitoring module starts initial pressure limiting to be controlled, and the output voltage of DC power supplier is transferred to initial stop voltage value, and described initial stop voltage value is lower than the normal working voltage of batteries;
Regulation Control step, after initial pressure limiting has been controlled, system monitoring module issues Regulation Control order, the voltage output value of DC power supplier is improved to a volt, and judge that whether batteries is in discharge condition, be to continue the voltage output value of DC power supplier to improve a volt until batteries is no longer discharged, be about to the output voltage pressure regulation of described DC power supplier to the floating charge pressure point of batteries;
Voltage is set step, in the output voltage pressure regulation of DC power supplier to floating charge pressure point, regulate the output voltage of DC power system to required floating voltage set point or even charging voltage set point, described floating voltage set point or even charging voltage set point preset according to actual needs; And,
Output current is controlled step, and voltage is set step and realized floating charge state or all fill after state, and DC power supplier is still in limited current state, and total output current of controlling DC power supplier is load current and battery charging current setting value sum.
2. the charging management method of modular battery charging management system according to claim 1, is characterized in that, described Regulation Control step and voltage are set in step, arrange all the time
3. according to the charging management method of modular battery charging management system described in claim 1 or 2, it is characterized in that, the processing procedure that is incorporated to of described DC power supplier is: the DC power supplier newly powering on is first kept to holding state, and carry out communication with system monitoring module, obtain the magnitude of voltage of current charge in batteries management system output, keep the output voltage values of DC power supplier consistent with the magnitude of voltage of current charge in batteries management system output, and be 0 by the electric current export-restriction of DC power supplier; Described system monitoring module is according to formula
recalculate the set point I of the output current limiting point of DC power supplier
dset, and being handed down to all DC power supplier, described DC power supplier is received the adjusting of carrying out current-limiting points after the set point adjustment order of current-limiting points.
4. according to the charging management method of modular battery charging management system described in claim 1 or 2, it is characterized in that, the processing procedure that exits of described DC power supplier is: when having DC power supplier occur communication failure or need to log off, whether the remaining total output current ability of DC power supplier that can proper communication of judgement is greater than I
load+ I
bset, if so, according to formula
recalculate the set point of current-limiting points, and then the current-limiting points of each DC power supplier is set; If not, that the cut-off current modulation of DC power supplier is maximum, the regular supply of proof load electric current.
5. the charging management method of modular battery charging management system according to claim 3, it is characterized in that, the processing procedure that exits of described DC power supplier is: when having DC power supplier occur communication failure or need to log off, whether the remaining total output current ability of DC power supplier that can proper communication of judgement is greater than I
load+ I
bset, if so, according to formula
recalculate the set point of current-limiting points, and then the current-limiting points of each DC power supplier is set; If not, that the cut-off current modulation of DC power supplier is maximum, the regular supply of proof load electric current.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210200444.0A CN102709985B (en) | 2012-06-18 | 2012-06-18 | Modularized storage battery charging management system and charging management method |
Applications Claiming Priority (1)
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| US10723295B2 (en) * | 2018-03-15 | 2020-07-28 | Thermo King Corporation | Methods and systems for managing bi-directional converter based battery modules |
| CN112751406B (en) * | 2019-10-29 | 2024-03-29 | 台湾积体电路制造股份有限公司 | Power supply device, semiconductor process system and power management method |
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| CN101847890A (en) * | 2010-05-28 | 2010-09-29 | 中达电通股份有限公司 | Control method for enhancing adaptability of communication power supply to single-phase alternating-current power grid |
| CN102222955A (en) * | 2011-06-17 | 2011-10-19 | 中达电通股份有限公司 | Control circuit and method for protecting storage battery pack |
| CN202679007U (en) * | 2012-06-18 | 2013-01-16 | 深圳市健网科技有限公司 | Modularized storage battery charging management system |
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| CN101847890A (en) * | 2010-05-28 | 2010-09-29 | 中达电通股份有限公司 | Control method for enhancing adaptability of communication power supply to single-phase alternating-current power grid |
| CN102222955A (en) * | 2011-06-17 | 2011-10-19 | 中达电通股份有限公司 | Control circuit and method for protecting storage battery pack |
| CN202679007U (en) * | 2012-06-18 | 2013-01-16 | 深圳市健网科技有限公司 | Modularized storage battery charging management system |
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