CN113890128A - Online maintenance system and online maintenance method for storage battery - Google Patents
Online maintenance system and online maintenance method for storage battery Download PDFInfo
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- CN113890128A CN113890128A CN202111007526.9A CN202111007526A CN113890128A CN 113890128 A CN113890128 A CN 113890128A CN 202111007526 A CN202111007526 A CN 202111007526A CN 113890128 A CN113890128 A CN 113890128A
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- battery
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- 238000012423 maintenance Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 36
- 238000007599 discharging Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/005—Detection of state of health [SOH]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses an online storage battery maintenance system which comprises a power grid branch, a UPS module, a storage battery and a storage battery maintenance system. The grid branch comprises a grid power supply, a bypass switch and a load. The storage battery maintenance system comprises a discharge circuit, a monitoring circuit, a control circuit, a storage battery switching switch and a discharge control switch. The storage battery maintenance system supplies power to the storage battery through the storage battery, and monitors the voltage of the storage battery and the voltage of a power grid power supply through the monitoring circuit. The on-line maintenance method of the storage battery comprises event maintenance and active maintenance, wherein the storage battery is periodically discharged and charged through a discharge circuit, the storage battery is charged after being put into operation, and strategies are formulated from two aspects to maintain the storage battery. The invention finishes the regular discharge and charge of the storage battery through the discharge circuit, can charge the storage battery in time after the power supply of the power grid is cut off, is scientific, reasonable, safe, simple and convenient, consumes less time, and can furthest prolong the service life of the storage battery and the UPS device.
Description
Technical Field
The invention relates to an online maintenance system and a maintenance method, in particular to an online maintenance system and an online maintenance method for a storage battery.
Background
In an Uninterruptible Power Supply (UPS) system, a battery is used as a backup power supply system in a large amount. During the use of the storage battery, the storage battery is easily in the states of undercharge, overcharge and the like along with the time. Due to the lack of effective maintenance means, the storage batteries are prone to premature water loss, aging and other problems, and the service life is affected.
The difficulty of daily maintenance work management of the storage battery is high, the storage battery management is in the situation of 'no monitoring' or 'only monitoring and no control', faults and hidden dangers cannot be found in time, the battery is maintained after a problem occurs, the safety risk is high, the maintenance work is passive, and the benefit is low; the maintenance work is time-consuming and labor-consuming, the actual implementation can not be completely fallen to the ground, the maintenance of the storage battery lacks basic data basis, the whole group is replaced into the existing maintenance guarantee mode, an effective storage battery management means is lacked, and the actual service life of the battery after being put into use is far shorter than the design service life. The frequent over-discharge, low-current deep discharge, low-temperature large-current discharge, untimely electricity supplement, insufficient charge, too high acid liquid density, water shortage in the battery and long-term storage become reasons of capacity reduction and service life shortening.
The UPS device in the prior art generally has no online storage battery maintenance function, which is inconvenient for the maintenance work of the storage battery, greatly influences the service life of the storage battery and even the whole UPS device, can not meet the needs of people, and needs to be improved urgently.
Disclosure of Invention
The invention aims to provide an online maintenance system and an online maintenance method for a storage battery, which solve the defects in the prior art.
The invention is realized by adopting the following technical scheme:
the utility model provides a battery online maintenance system, including power and load, its characterized in that, be connected with bypass switch between power and load, there is the UPS device in bypass switch's both ends cross-over connection, the UPS device links to each other with the battery through a battery on-off switch, the battery still links to each other with discharge circuit and control circuit respectively through discharge control switch, discharge circuit's effect is to carrying out the processing of discharging to the battery, control circuit links to each other with bypass switch for control bypass switch's closure and disconnection, monitoring circuit links to each other with the battery, monitoring circuit's effect is the voltage of monitoring battery and the voltage of grid power.
The online maintenance method of the storage battery is characterized by comprising the following steps: setting the number of days of the active maintenance cycle, when the number of days reaches the preset number of days, monitoring whether the voltage of the power grid power supply is normal or not by the monitoring circuit, starting an active maintenance program, switching on a discharge control switch, and carrying out rapid deep discharge on the storage battery by a discharge circuit;
monitoring whether the voltage value of the storage battery reaches a discharge cut-off voltage or not through a monitoring circuit, and stopping discharging if the voltage value of the storage battery reaches the discharge cut-off voltage, or: when the monitoring circuit monitors that the power supply of the power grid is out of the normal range, whether the voltage of the storage battery is lower than the discharge cut-off voltage or not is judged at the moment, if the voltage of the storage battery is not lower than the discharge cut-off voltage, other operations are not carried out, and the timer continues to count days;
if the voltage value of the storage battery reaches the discharge cut-off voltage, the discharge control switch is switched off, the storage battery switching switch is switched on, the storage battery is charged by the power grid, whether the voltage value of the storage battery reaches the charge cut-off voltage or not is monitored through the monitoring circuit, and if the voltage value of the storage battery reaches the charge cut-off voltage, the charging is stopped;
and resetting the counter and starting a new round of timing.
Further, when the voltage of the power grid is within a normal range, the timer counts the number of days without performing other operations.
Further, the number of days in the active curing cycle is preset to 180 days.
The invention has the beneficial technical effects that: the state monitoring is carried out on the power grid power supply and the storage battery through the maintenance system, and two modes of event maintenance and active maintenance are implemented according to the maintenance strategy. By scientifically and reasonably setting the maintenance period and the maintenance method, the service lives of the storage battery and the UPS device can be prolonged to the greatest extent, and the maintenance process is safe, convenient, rapid, time-saving and labor-saving.
Drawings
FIG. 1 is a schematic block diagram of an on-line battery maintenance circuit.
Fig. 2 is a flow chart of the on-line maintenance circuit of the storage battery.
Detailed Description
The invention will be better understood by the following description of embodiments thereof, but the applicant's specific embodiments are not intended to limit the invention to the particular embodiments shown, and any changes in the definition of parts or features and/or in the overall structure, not essential changes, are intended to define the scope of the invention.
Description of reference numerals: the system comprises a power grid branch 1, a UPS module 2, a storage battery 3, a storage battery maintenance system 4, a power grid power supply 11, a bypass switch K1, a load 12, a discharge circuit 41, a monitoring circuit 42 and a control circuit 43
As shown in fig. 1, the storage battery online maintenance system is arranged in a power grid branch 1, the power grid branch 1 comprises a power grid power supply 11, a bypass switch K1 and a load 12, the storage battery online maintenance system comprises a UPS device 2, a storage battery 3, a storage battery maintenance system 4, a discharge circuit 41, a monitoring circuit 42, a control circuit 43, a storage battery switch K2 and a discharge control switch K3, the storage battery maintenance system 4 is powered by the storage battery 3, the voltage of the storage battery 3 and the voltage of the power grid power supply 11 are monitored by the monitoring circuit 42, and the bypass switch K1, the storage battery switch K2 and the discharge control switch K3 are controlled by the control circuit 43. The storage battery maintenance system 4 is always in an online state and supplies power to the storage battery 3 through the storage battery, the storage battery maintenance system 4 monitors the voltage of the storage battery 3 and the voltage of the power grid power supply 11 through the monitoring circuit 42 to serve as a basis for sending out a control instruction, and the storage battery maintenance system 4 controls the on-off of the bypass switch K1, the storage battery switching switch K2 and the discharging control switch K3 through the control circuit 43.
The discharge circuit 41 is used for discharging the storage battery, the control circuit 43 is used for controlling the on and off of the bypass switch K1, the monitoring circuit 42 is connected with the storage battery 3, and the monitoring circuit 42 is used for monitoring the voltage of the storage battery 3 and the voltage of the power grid power supply 11.
Preferably, the discharging circuit 41 is a DC-DC circuit, which can rapidly discharge by controlling the discharging current to rapidly complete the maintenance work of the storage battery, the monitoring circuit 42 can adopt a voltage sensor or a voltage transformer to collect a voltage value, and the control circuit 43 can adopt a relay control mode.
The working principle of the embodiment is as follows: when the system is normally powered by the power grid 11, the bypass switch K1 is in an off state, and the storage battery switch K2 is in an off state. The grid power supply 11 supplies power to the load 12 via a rectifier and an inverter in the UPS module 2. When the UPS device fails or is overhauled, the bypass switch K1 is switched on, and the UPS device can be overhauled.
When the power supply 11 of the power grid is cut off, the storage battery switching switch K2 is switched on, and the UPS module switches the storage battery 3 into the power supply system to supply power to the load 12, so that the uninterrupted switching of the power supply is realized. When the power supply 11 is restored, the power supply 11 is divided into two paths, wherein one path of the power supply passes through the rectifier and the inverter in the UPS module 2 to provide electric energy to supply power to the load 12, and the other path of the power supply charges the storage battery 3.
The method for realizing the online maintenance of the storage battery comprises the following steps: the monitoring circuit 42 starts to monitor whether the voltage of the grid power supply 11 is normal, and when the voltage of the grid power supply 11 is within the normal range, the timer counts the number of days without performing other operations. Generally, the period of active maintenance can be determined from the actual parameters of the battery, for example, the number of days can be preset to 180 days. And when the number of days reaches the preset number of days, the system is started to judge whether to carry out active maintenance. Generally, an active curing procedure should be initiated at this point: the discharge control switch K3 is turned on, and the battery 3 is rapidly and deeply discharged by the discharge circuit 41. When the voltage value of the battery 3 reaches the discharge cutoff voltage, the monitoring circuit 42 monitors that the discharge is stopped. Further, the discharge control switch K3 is turned off, the battery switching switch K2 is turned on, the storage battery 3 is charged by the grid power supply 11, and when the voltage value of the storage battery 3 reaches the charge cut-off voltage, the charge is stopped by the monitoring circuit 42. And when the active maintenance work is finished, the counter is reset, and a new round of timing is started.
When the grid power supply 11 is detected to be out of the normal range by the monitoring circuit 42, it is first determined whether the voltage of the storage battery 3 is lower than the discharge cutoff voltage. If the voltage of the battery 3 is not lower than the discharge cutoff voltage, the timer continues counting the number of days without performing other operations. If the voltage of the storage battery 3 is lower than the discharge cut-off voltage, the storage battery 3 is immediately charged at the moment, namely, the storage battery switching switch K2 is switched on, the discharge control switch K3 is switched off, the storage battery 3 is charged by the power grid 11, and the charging is stopped when the voltage value of the storage battery 3 reaches the charge cut-off voltage through the monitoring circuit 42. And when the event maintenance work is finished, the counter is reset, and a new round of timing is started.
In the description herein, references to the description of "one embodiment," "an example," "for instance," etc., mean that a particular feature, structure, material, or characteristic described in connection with the example embodiment is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that all such changes and modifications as fall within the true spirit and scope of the invention be considered as within the following claims.
Claims (4)
1. The utility model provides a battery online maintenance system, including power and load, its characterized in that, be connected with bypass switch between power and load, there is the UPS device in bypass switch's both ends cross-over connection, the UPS device links to each other with the battery through a battery on-off switch, the battery still links to each other with discharge circuit and control circuit respectively through discharge control switch, discharge circuit's effect is to carrying out the processing of discharging to the battery, control circuit links to each other with bypass switch for control bypass switch's closure and disconnection, monitoring circuit links to each other with the battery, monitoring circuit's effect is the voltage of monitoring battery and the voltage of grid power.
2. The online maintenance method of the storage battery is characterized by comprising the following steps: setting the number of days of the active maintenance cycle, when the number of days reaches the preset number of days, monitoring whether the voltage of the power grid power supply is normal or not by the monitoring circuit, starting an active maintenance program, switching on a discharge control switch, and carrying out rapid deep discharge on the storage battery by a discharge circuit;
monitoring whether the voltage value of the storage battery reaches a discharge cut-off voltage or not through a monitoring circuit, and stopping discharging if the voltage value of the storage battery reaches the discharge cut-off voltage, or: when the monitoring circuit monitors that the power supply of the power grid is out of the normal range, whether the voltage of the storage battery is lower than the discharge cut-off voltage or not is judged at the moment, if the voltage of the storage battery is not lower than the discharge cut-off voltage, other operations are not carried out, and the timer continues to count days;
if the voltage value of the storage battery reaches the discharge cut-off voltage, the discharge control switch is switched off, the storage battery switching switch is switched on, the storage battery is charged by the power grid, whether the voltage value of the storage battery reaches the charge cut-off voltage or not is monitored through the monitoring circuit, and if the voltage value of the storage battery reaches the charge cut-off voltage, the charging is stopped;
and resetting the counter and starting a new round of timing.
3. The on-line maintenance method of storage batteries according to claim 2, characterized in that when the voltage of the grid power supply is within the normal range, the timer counts the number of days without performing other operations.
4. The online maintenance method of a storage battery according to claim 2 or 3, wherein the number of days of a cycle of active maintenance is preset to 180 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111007526.9A CN113890128A (en) | 2021-08-30 | 2021-08-30 | Online maintenance system and online maintenance method for storage battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111007526.9A CN113890128A (en) | 2021-08-30 | 2021-08-30 | Online maintenance system and online maintenance method for storage battery |
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| CN113890128A true CN113890128A (en) | 2022-01-04 |
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