CN112217273B - Monitoring method and monitoring device for battery management system - Google Patents

Monitoring method and monitoring device for battery management system Download PDF

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Publication number
CN112217273B
CN112217273B CN201911404457.8A CN201911404457A CN112217273B CN 112217273 B CN112217273 B CN 112217273B CN 201911404457 A CN201911404457 A CN 201911404457A CN 112217273 B CN112217273 B CN 112217273B
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management system
power
battery management
power supply
determining
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CN112217273A (en
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郑河星
张思文
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Svolt Energy Technology Co Ltd
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Svolt Energy Technology Co Ltd
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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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The invention provides a monitoring method and a monitoring device for a battery management system, and belongs to the technical field of electronics. The battery management system is provided with a clock circuit and a standby power supply, the standby power supply is used for supplying power to the clock circuit when the battery management system is in a power-off state, and the monitoring method for the battery management system comprises the following steps: determining an accumulated amount of power consumed by the backup power source during the power down of the battery management system; judging whether the accumulated consumed electric quantity exceeds a preset value; and determining that the backup power supply is invalid when the accumulated consumed electric quantity exceeds the preset value. The monitoring method for the battery management system can realize monitoring of the standby power supply, can timely find whether the standby power supply is about to fail before the electric quantity of the standby power supply is exhausted, and effectively improves the working stability and safety of the whole system.

Description

Monitoring method and monitoring device for battery management system
Technical Field
The invention relates to the technical field of electronics, in particular to a monitoring method and a monitoring device for a battery management system.
Background
The BMS (Battery Management System), which is a core component of a Battery System, is a System for managing a Battery, and is capable of dynamically detecting data of voltage, current, temperature, insulation resistance, etc. of the Battery, and performing operations such as state estimation, Battery equalization Management, thermal Management, contactor control, fault diagnosis, alarm, etc. according to the detected data, the BMS may perform real-time communication with an external energy storage controller through a CAN bus, RS485, and ethernet communication, and display necessary information to a user in real time through a display System.
The BMS is supplied with power by an external power supply when working, and the external power supply is powered off when not working, and the BMS stops working because of no external power supply input at the moment. When the BMS calculates the initial remaining power at each time of power on, it is necessary to determine whether to correct the initial remaining power according to a time length for which the BMS stops operating, so that the BMS needs to have a real-time clock function, i.e., when the external power supply is powered off, the BMS still maintains a timing function and provides accurate current time data at any time.
In order to solve the technical problems, the implementation method of the prior art adopts the button cell as a standby power supply of the clock circuit, when the external power supply is powered on, the external power supply supplies power to the clock circuit, and when the external power supply is powered off, the button cell supplies power to the clock circuit, so that the BMS can still accurately time under the condition of power failure. The schematic circuit diagram of the clock circuit powered by the button cell is shown in fig. 1, and the external power supply and the button cell are respectively connected with the clock circuit in series.
The inventor of the application finds that the battery management system is also commonly applied to large-scale wind and light power stations, usually in remote areas and unattended areas, the method of using the button battery as a standby power supply of the clock circuit at present solves the timing function of the BMS under the condition of external power failure, but lacks the diagnosis of the state of the button battery, when the electric quantity of the button battery is exhausted and cannot supply power normally, a worker cannot learn in time, the clock timing is inaccurate or the timing is stopped after the system is powered off, so that the initial value of the residual electric quantity of the system cannot be corrected, the energy storage battery has the risk of overcharge or overdischarge, and the whole system cannot work normally and has potential safety hazards.
Disclosure of Invention
In view of this, the present invention is directed to a monitoring method for a battery management system and a monitoring apparatus for the battery management system, so as to solve the problem that the battery management system is prone to fail to operate due to the fact that the state of a standby power supply for supplying power to a clock circuit is not monitored in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a monitoring method for a battery management system provided with a clock circuit and a backup power supply for supplying power to the clock circuit when the battery management system is in a power-off state, the monitoring method for a battery management system comprising: determining an accumulated amount of power consumed by the backup power source during the power down of the battery management system; judging whether the accumulated consumed electric quantity exceeds a preset value; and determining that the backup power supply is invalid when the accumulated consumed electric quantity exceeds the preset value.
Further, the determining the accumulated consumed power of the backup power source during the power-off of the battery management system comprises: upon a re-power-up of the battery management system, determining a single amount of power consumed by the backup power source during a previous power-down period prior to the re-power-up of the battery management system; and determining the accumulated consumed electric quantity according to the single consumed electric quantity of the standby power supply during each power-off period.
Further, the monitoring method for the battery management system further comprises determining the single power consumption amount by the following method; determining the time of the battery management system during power failure and the time of the battery management system after power failure to be powered on again according to the timing time of the clock circuit; determining the single power-off time of the battery management system according to the power-off time of the battery management system and the power-on time of the battery management system after power-off; and determining the single consumed electric quantity of the standby power supply during the power-off period of the battery management system according to the working current of the standby power supply and the single power-off time of the battery management system, wherein the working current of the standby power supply is stored in a nonvolatile memory of the battery management system.
Further, the monitoring method for the battery management system further includes: and when the accumulated consumed electric quantity exceeds the preset value, a warning signal that the electric quantity of the standby power supply is too low is sent out through a warning module.
Further, the preset value is determined according to the rated capacity of the standby power supply.
Compared with the prior art, the monitoring method for the battery management system has the following advantages that:
(1) the monitoring method for the battery management system can realize monitoring of the state of the standby power supply and timely judge whether the standby power supply fails (namely whether the electric quantity is exhausted);
(2) the monitoring method for the battery management system provided by the embodiment of the invention can send alarm information in time before the electric quantity of the standby power supply is exhausted, prompt maintenance personnel to replace the standby power supply in time, and effectively improve the reliability and safety of the whole system.
Another objective of the present invention is to provide a machine-readable storage medium, which is used to solve the problem that the battery management system is prone to fail due to the fact that the state of the standby power supply for supplying power to the clock circuit is not monitored in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a machine-readable storage medium having instructions stored thereon for causing a machine to perform the monitoring method for a battery management system described above.
The machine-readable storage medium has the same advantages as the monitoring method for the battery management system described above over the prior art, and is not described herein again.
Another objective of the present invention is to provide a monitoring device for a battery management system, so as to solve the problem that the battery management system is prone to fail to operate due to the fact that the state of a standby power supply for supplying power to a clock circuit is not monitored in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a monitoring device for a battery management system, the battery management system being provided with a clock circuit and a backup power supply for supplying power to the clock circuit when the battery management system is in a power-off state, the monitoring device for a battery management system comprising: a calculation module for determining an accumulated amount of power consumed by the backup power source during a power outage of the battery management system; the judging module is used for judging whether the accumulated consumed electric quantity exceeds a preset value; and the determining module is used for determining that the standby power supply fails when the accumulated consumed electric quantity exceeds the preset value.
Further, the determination module is configured to determine the accumulated consumed power of the backup power source during the power-off period of the battery management system by: upon a re-power-up of the battery management system, determining a single amount of power consumed by the backup power source during a previous power-down period prior to the re-power-up of the battery management system; and determining the accumulated consumed electric quantity according to the single consumed electric quantity of the standby power supply during each power-off period.
Further, the determining module is configured to determine the single power consumption amount by: determining the time of the battery management system during power failure and the time of the battery management system after power failure to be powered on again according to the timing time of the clock circuit; determining the single power-off time of the battery management system according to the power-off time of the battery management system and the power-on time of the battery management system after power-off; and determining the single consumed electric quantity of the standby power supply during the power-off period of the battery management system according to the working current of the standby power supply and the single power-off time of the battery management system, wherein the working current of the standby power supply is stored in a nonvolatile memory of the battery management system.
Furthermore, the monitoring device for the battery management system further comprises a warning module, and the warning module is used for sending a warning signal that the electric quantity of the standby power supply is too low when the accumulated consumed electric quantity exceeds the preset value.
The monitoring device for the battery management system and the monitoring method for the battery management system have the same advantages compared with the prior art, and are not repeated herein.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a schematic circuit diagram of a button cell for powering a clock circuit;
fig. 2 is a schematic flow chart of a monitoring method for a battery management system according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a monitoring method for a battery management system according to an embodiment of the present invention;
fig. 4 is a block diagram of a monitoring device for a battery management system according to an embodiment of the present invention.
Description of the reference numerals
410 calculating module 420 judging module
430 determination module
Detailed Description
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Under a normal working condition, an external power supply is adopted to supply power to the battery management system, when the external power supply is powered off, namely the power supply of the battery management system is stopped, the battery management system stops working due to power off, in order to reduce the influence of the power off on the judgment of the battery management system on the monitored residual electric quantity of the battery, a clock circuit connected with the battery management system is arranged, and the clock circuit is used for assisting the battery management system to determine the power off time of the battery management system. When the external power supply can supply power, the external power supply can simultaneously supply power to the clock circuit, and when the external power supply is in a power-off state, the standby power supply supplies power to the clock circuit, so that the clock circuit can continuously work. Based on the fact that the standby power supply can stop supplying power due to insufficient power, the invention provides a monitoring method for a battery management system.
Fig. 2 is a schematic flow chart of a monitoring method for a battery management system according to an embodiment of the present invention. As shown in fig. 2, the monitoring method for a battery management system includes steps S202 to S206.
In step S202, the accumulated amount of power consumed by the backup power supply during the power-off of the battery management system is determined.
During the time that the external power source stops supplying power to the battery management system, the battery management system is in a power-off state, and the clock circuit is supplied with power by the standby power source. Therefore, the accumulated consumed power amount of the backup power supply can be determined according to the accumulated power-off time of the battery management system, and the accumulated consumed power amount can be determined according to the single consumed power amount of the backup power supply during each power-off period.
For example, when the battery management system switches from the power-off state to the power-on state, the battery management system may determine the power consumption of the backup power source during the power-off period, that is, the single power consumption, and store the single power consumption. The battery management system can accumulate the single consumed electric quantity of the standby power supply during each power-off period before the new power-on state, and can determine the accumulated consumed electric quantity of the standby power supply during all power-off periods.
For example, the battery management system may record the power-off time each time, determine an accumulated power-off time before the battery management system switches back to the power-on state, and further determine the total amount of power consumed by the backup power source during the accumulated power-off time.
The power-off time of the battery management system can be acquired and recorded in any existing mode. For example, the battery management system may read the signal of the clock circuit every preset time, which may be several milliseconds or the like.
The embodiment of the invention also provides a calculation method for determining the consumed electric quantity of the standby power supply, which comprises the following steps: and determining the working current of the standby power supply, and taking the product of the working current and the working time as the consumed electric quantity of the standby power supply. Considering that the influence of the change of the operating current on the power consumption during the operation of the standby power supply is negligible, the operating current of the standby power supply may be stored in advance.
Optionally, the detection of the working current of the standby power supply may be implemented in any existing manner, and the working current is stored in advance. For example, before the standby power supply and the clock circuit are operated, the current in the circuit when the standby power supply supplies power to the clock circuit is measured together with the detectable current, and the detected result is used as the operating current.
In order to reduce the cost of the product, the operating current may be stored in a Non-Volatile Memory (NVM) of the battery management system, so that even if the battery management system is powered off, data related to the operating current is not lost, and after the battery management system is powered on again, the data related to the operating current may be read again.
In the technical scheme provided by the embodiment of the invention, the single power-off time of the battery management system needs to be determined, so that the duration of the power-off time can be determined by the battery management system according to the power-off time and the power-on time of the battery management system and can be used for judging the state of the standby power supply.
In step S204, it is determined whether the accumulated consumed power exceeds a preset value.
The preset value can be determined by the factors such as the specific model of the standby power supply, the use environment and the like. For example, a preset percentage value of the rated capacity of the backup power source may be used as the preset value, and the preset percentage may be 75% to 90%, and preferably 80%.
Optionally, the preset value, the rated capacity of the backup power source, or the preset percentage may also be stored in a non-volatile memory of the battery management system.
In step S206, when the accumulated consumed power exceeds the preset value, it is determined that the backup power is failed.
If the accumulated consumed electric quantity exceeds the preset value, the residual electric quantity of the standby power supply is not enough to support the normal work of the clock circuit during the power-off period of the battery management system, so that the standby power supply can be determined to be invalid and needs to be replaced in time, and the stability and the safety of the whole system are improved.
Optionally, after determining that the standby power supply fails, a warning signal that the electric quantity of the standby power supply is too low may be sent out through the warning module. The warning module can be an alarm or an indicator light and the like, and can send out equipment needing to replace the standby power supply like maintenance personnel, so that the condition of power failure of a clock circuit is avoided.
According to the monitoring method for the battery management system, provided by the embodiment of the invention, whether the standby power supply is in a failure state or not can be found in time before the electric quantity of the standby power supply is exhausted, so that the system safety problem caused by the fact that a clock circuit cannot work due to the electric quantity exhaustion of the standby power supply can be effectively reduced, the normal work of the system is ensured, and the maintenance cost of the system can be reduced.
A specific example is provided and a technical solution provided by the embodiment of the present invention is explained in detail with reference to fig. 3, in which the standby power source in this example is a button battery.
The monitoring method for the battery management system shown in fig. 3 is as follows:
(1) saving a Battery _ capacity value which can be released when the button Battery is discharged from a rated voltage to a termination voltage into a nonvolatile memory NVM of the BMS;
(2) calculating a Current value RTC _ Current required by the clock circuit during working, and storing the value into a nonvolatile memory NVM of the BMS;
(3) the BMS records a current Time _ PowerOff _ N (N ═ 1, 2, 3 … …) at the nth external power outage;
(4) the BMS records a current Time _ PowerOn _ N (N is 1, 2, 3 … …) when the nth external power source is powered up again (i.e., the power state is switched to the powered-up state), and defaults;
(5) the BMS calculates the power supply Time Time _ Battery _ Use _ N of the RTC circuit of the Nth power-off button Battery, namely Time _ PowerOn _ N-Time _ PowerOff _ N;
(6) the BMS calculates the Nth Capacity value Capacity _ Consitution _ N (Time _ Battery _ Use _ N) (RTC _ Current) consumed by the button Battery for supplying power to the RTC circuit;
(7) accumulating the button Battery Capacity value consumed in each outage, and triggering a button Battery Capacity too low alarm when the Capacity value Capacity _ Consitution _ Sum consumed in the accumulation of the button Battery is more than or equal to 0.8 times of the button Battery rated Capacity _ Capacity, and informing a maintainer of replacing the button Battery.
Fig. 4 is a block diagram of a monitoring device for a battery management system according to an embodiment of the present invention. The battery management system is provided with a clock circuit and a backup power supply, the backup power supply is as shown in fig. 4, and the monitoring device for the battery management system includes: a calculation module 410 for determining an accumulated amount of power consumed by the backup power source during a power down of the battery management system; a determining module 420, configured to determine whether the accumulated power consumption exceeds a preset value; and a determining module 430, configured to determine that the backup power source fails when the accumulated consumed power exceeds the preset value.
Optionally, the preset value is determined according to the rated capacity of the backup power supply, for example, the preset value may be 0.7 times to 0.9 times of the rated capacity, and is preferably 0.8 times of the rated capacity of the backup power supply.
Optionally, the standby power supply is a button battery.
In some optional embodiments, the determination module may determine the accumulated consumed power of the backup power source during the power-down of the battery management system by: upon a re-power-up of the battery management system, determining a single amount of power consumed by the backup power source during a previous power-down period prior to the re-power-up of the battery management system; and determining the accumulated consumed electric quantity according to the single consumed electric quantity of the standby power supply during each power-off period.
In some optional embodiments, the determining module may further determine the single amount of power consumed by: determining the time of the battery management system during power failure and the time of the battery management system after power failure to be powered on again according to the timing time of the clock circuit; determining the single power-off time of the battery management system according to the power-off time of the battery management system and the power-on time of the battery management system after power-off; and determining the single consumed electric quantity of the standby power supply during the power-off period of the battery management system according to the working current of the standby power supply and the single power-off time of the battery management system.
Optionally, the operating current of the backup power source is stored in a non-volatile memory of the battery management system.
In some optional embodiments, the monitoring device for a battery management system further includes an alarm module, configured to send an alarm signal that the power of the backup power supply is too low when the accumulated consumed power exceeds the preset value.
Optionally, the warning module may be an alarm or an indicator light.
The specific working principle and benefits of the monitoring device for a battery management system provided in the embodiment of the present invention are similar to those of the monitoring method for a battery management system provided in the embodiment of the present invention, and will not be described herein again.
Correspondingly, the embodiment of the invention also provides a machine-readable storage medium, which stores instructions for executing the monitoring method for the battery management system.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.

Claims (6)

1. A monitoring method for a battery management system, wherein the battery management system is provided with a clock circuit and a backup power supply for supplying power to the clock circuit when the battery management system is in a power-off state, the monitoring method for a battery management system comprising:
determining an accumulated amount of power consumed by the backup power source during the power down of the battery management system;
judging whether the accumulated consumed electric quantity exceeds a preset value; and
determining that the standby power supply fails when the accumulated consumed electric quantity exceeds the preset value;
wherein the content of the first and second substances,
the determining an accumulated amount of power consumed by the backup power source during the power down of the battery management system comprises:
upon a re-power-up of the battery management system, determining a single amount of power consumed by the backup power source during a previous power-down period prior to the re-power-up of the battery management system; and
determining the accumulated consumed electric quantity according to the single consumed electric quantity of the standby power supply during each power-off period;
the monitoring method for a battery management system further includes determining the single amount of power consumed by:
determining the time of the battery management system during power failure and the time of the battery management system after power failure to be powered on again according to the timing time of the clock circuit;
determining the single power-off time of the battery management system according to the power-off time of the battery management system and the power-on time of the battery management system after power-off; and
determining the single consumed electric quantity of the standby power supply during the power-off period of the battery management system according to the working current of the standby power supply and the single power-off time of the battery management system,
wherein the operating current of the backup power source is stored in a non-volatile memory of the battery management system.
2. The monitoring method for a battery management system according to claim 1, further comprising:
and when the accumulated consumed electric quantity exceeds the preset value, a warning signal that the electric quantity of the standby power supply is too low is sent out through a warning module.
3. The monitoring method for a battery management system according to any one of claims 1-2, wherein the preset value is determined according to a rated capacity of the backup power source.
4. A monitoring device for a battery management system, the battery management system being provided with a clock circuit and a backup power supply for supplying power to the clock circuit when the battery management system is in a power-off state, the monitoring device for a battery management system comprising:
a calculation module for determining an accumulated amount of power consumed by the backup power source during a power outage of the battery management system;
the judging module is used for judging whether the accumulated consumed electric quantity exceeds a preset value; and
the determining module is used for determining that the standby power supply fails when the accumulated consumed electric quantity exceeds the preset value;
wherein the content of the first and second substances,
the determination module is configured to determine an accumulated consumed power amount of the backup power source during the power-off of the battery management system by:
upon a re-power-up of the battery management system, determining a single amount of power consumed by the backup power source during a previous power-down period prior to the re-power-up of the battery management system; and
determining the accumulated consumed electric quantity according to the single consumed electric quantity of the standby power supply during each power-off period;
the determination module is configured to determine the single power consumption amount by:
determining the time of the battery management system during power failure and the time of the battery management system after power failure to be powered on again according to the timing time of the clock circuit;
determining the single power-off time of the battery management system according to the power-off time of the battery management system and the power-on time of the battery management system after power-off; and
determining the single consumed electric quantity of the standby power supply during the power-off period of the battery management system according to the working current of the standby power supply and the single power-off time of the battery management system,
wherein the operating current of the backup power source is stored in a non-volatile memory of the battery management system.
5. The monitoring device for battery management system as claimed in claim 4, further comprising a warning module for sending a warning signal that the power of the backup power supply is too low when the accumulated power consumption exceeds the predetermined value.
6. A machine-readable storage medium having stored thereon instructions for causing a machine to execute the monitoring method for a battery management system according to any one of claims 1 to 3.
CN201911404457.8A 2019-12-30 2019-12-30 Monitoring method and monitoring device for battery management system Active CN112217273B (en)

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CN113702835B (en) * 2021-08-10 2024-03-08 青岛峻海物联科技有限公司 Method for reducing battery power consumption risk of Internet of things equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200726030A (en) * 2005-12-21 2007-07-01 Inventec Corp System and method of monitoring battery capacity
CN101162259A (en) * 2006-10-12 2008-04-16 中兴通讯股份有限公司 Function testing device and method for small electric quantity extra battery
CN104953701A (en) * 2015-06-24 2015-09-30 青岛鼎信通讯股份有限公司 Isolation type battery power supply scheme
CN206575192U (en) * 2017-03-21 2017-10-20 合肥国轩高科动力能源有限公司 A kind of cell management system of electric automobile clock synchronization circuit
CN107861068A (en) * 2017-10-23 2018-03-30 上海斐讯数据通信技术有限公司 A kind of remote control and remote control electric quantity monitoring method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200726030A (en) * 2005-12-21 2007-07-01 Inventec Corp System and method of monitoring battery capacity
CN101162259A (en) * 2006-10-12 2008-04-16 中兴通讯股份有限公司 Function testing device and method for small electric quantity extra battery
CN104953701A (en) * 2015-06-24 2015-09-30 青岛鼎信通讯股份有限公司 Isolation type battery power supply scheme
CN206575192U (en) * 2017-03-21 2017-10-20 合肥国轩高科动力能源有限公司 A kind of cell management system of electric automobile clock synchronization circuit
CN107861068A (en) * 2017-10-23 2018-03-30 上海斐讯数据通信技术有限公司 A kind of remote control and remote control electric quantity monitoring method

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