CN109873210B - Monitoring method and device for retired battery - Google Patents
Monitoring method and device for retired battery Download PDFInfo
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Abstract
The invention provides a monitoring method and a monitoring device for a retired battery, wherein the method comprises the following steps: acquiring state data of a plurality of battery modules in an energy storage unit acquired by a battery management system BMS, wherein the BMS is respectively connected with the plurality of battery modules; determining the states of the plurality of battery modules according to the state data; and respectively displaying the states of the plurality of battery modules in a display screen, wherein the states are used for indicating that the plurality of battery modules are normal or aged. According to the invention, the problem that a single battery module influencing the overall effect of the energy storage unit cannot be identified due to the fact that the whole energy storage unit is directly monitored in the related technology can be solved, and the single battery module influencing the overall effect of the energy storage unit can be identified and independently controlled by independently monitoring the single battery module in the energy storage unit.
Description
Technical Field
The invention relates to the field of batteries, in particular to a monitoring method and a monitoring device for a retired battery.
Background
Under the combined promotion of energy conservation and emission reduction and environmental protection, electric automobiles are more and more concerned as new energy vehicles. The lithium ion battery gradually becomes the mainstream of the electric automobile by virtue of the characteristics of high specific energy, long service life and the like. However, when the capacity of the vehicle-mounted power battery is reduced to below 80%, the vehicle-mounted power battery is no longer suitable for being used by the electric vehicle, and if the vehicle-mounted power battery is directly discarded, the vehicle-mounted power battery can cause great resource waste and even environmental pollution. Meanwhile, China is entering a large-scale scrapping and recycling period of power batteries, and recycling of retired batteries of electric vehicles is imperative. The ex-service batteries of the electric automobile are detected and sorted and are used in the field with lower energy requirements than the electric automobile.
The retired battery is used for a long time on the electric automobile, and the single battery cell of the energy storage unit has certain inconsistency. However, when the battery modules are connected in series, external appearance of the inconsistency may be impaired by the mutual cancellation, and the detection and sorting may be passed. However, in the process of using the battery cells in a echelon manner and continuously charging and discharging, the inconsistency of the single battery cells may be aggravated, so that the battery modules show great inconsistency, and the overall effect of the energy storage unit is affected.
The problem that a single battery module influencing the overall effect of the energy storage unit cannot be identified due to the fact that the whole energy storage unit is directly monitored in the related art is solved.
Disclosure of Invention
The embodiment of the invention provides a monitoring method and a monitoring device for retired batteries, which are used for at least solving the problem that a single battery module influencing the overall effect of an energy storage unit cannot be identified due to the fact that the whole energy storage unit is directly monitored in the related art.
According to an embodiment of the present invention, there is provided a method for monitoring a retired battery, including:
acquiring state data of a plurality of battery modules in an energy storage unit acquired by a battery management system BMS, wherein the BMS is respectively connected with the plurality of battery modules;
determining the states of the plurality of battery modules according to the state data;
and respectively displaying the states of the plurality of battery modules in a display screen, wherein the states are used for indicating that the plurality of battery modules are normal or aged.
Optionally, acquiring the acquired state data of each battery module in the energy storage unit includes:
acquiring module capacity and cell voltage of the plurality of battery modules acquired by the BMS, wherein the state data includes the module capacity and the cell voltage.
Optionally, determining the states of the plurality of battery modules according to the state data includes:
judging whether the capacity loss of the module capacity of each battery module in the plurality of battery modules is smaller than a first preset value or not, and judging whether the voltage difference of the monomer voltage of each battery module is smaller than a second preset value or not, wherein the capacity loss is the difference value between the module capacity and the pre-stored module initial capacity, and the voltage difference is the difference value between the monomer voltage and the pre-stored monomer initial voltage;
determining that the state of the battery module is normal under the condition that the judgment results are yes; otherwise, determining the state of the battery module as a first aging state.
Optionally, after determining that the state of the battery module is the first aging state, the method further includes:
judging whether the capacity loss of the module capacity of the battery module is greater than a third preset value or whether the voltage difference of the monomer voltage of the battery module is greater than a fourth preset value, wherein the third preset value is greater than the first preset value, and the fourth preset value is greater than the second preset value;
and if the judgment result is yes, determining that the state of the battery module is a second aging state.
Optionally, respectively displaying the states of the plurality of battery modules in a display screen includes:
and respectively displaying the states of the plurality of battery modules as a normal state, a first aging state or a second aging state in the display screen.
Optionally, after the states of the plurality of battery modules are respectively displayed in the display screen, the method further includes:
identifying the battery module in the second aging state;
and controlling to cut off the battery module in the second aging state.
Optionally, after the states of the plurality of battery modules are respectively displayed in the display screen, the method further includes:
receiving a cutting instruction of the battery module with the cutting state being a first aging state;
and cutting off the battery module in the first aging state according to the cutting-off instruction.
According to another embodiment of the present invention, there is also provided a monitoring apparatus for a retired battery, including:
the battery management system comprises an acquisition module, a storage module and a management module, wherein the acquisition module is used for acquiring state data of a plurality of battery modules in an energy storage unit acquired by a battery management system BMS, and the BMS is respectively connected with the plurality of battery modules;
the determining module is used for determining the states of the plurality of battery modules according to the state data;
and the display module is used for respectively displaying the states of the plurality of battery modules in a display screen, wherein the states are used for indicating that the plurality of battery modules are normal or aged.
Optionally, the obtaining module is further configured to
Acquiring module capacity and cell voltage of the plurality of battery modules acquired by the BMS, wherein the state data includes the module capacity and the cell voltage.
Optionally, the determining module includes:
the judging unit is used for judging whether the capacity loss of the module capacity of each battery module in the plurality of battery modules is smaller than a first preset value or not and judging whether the voltage difference of the monomer voltage of each battery module is smaller than a second preset value or not, wherein the capacity loss is the difference value between the module capacity and the pre-stored module initial capacity, and the voltage difference is the difference value between the monomer voltage and the pre-stored monomer initial voltage;
the first determining unit is used for determining that the state of the battery module is normal under the condition that the judging results are yes; otherwise, determining the state of the battery module as a first aging state.
Optionally, the apparatus further comprises:
the second determining unit is used for judging whether the capacity loss of the module capacity of the battery module is greater than a third preset value or judging whether the voltage difference of the monomer voltage of the battery module is greater than a fourth preset value, wherein the third preset value is greater than the first preset value, and the fourth preset value is greater than the second preset value;
and the third determining unit is used for determining that the state of the battery module is a second aging state under the condition that the judgment result is yes.
Optionally, the display module is further used for
And respectively displaying the states of the plurality of battery modules as a normal state, a first aging state or a second aging state in the display screen.
Optionally, the apparatus further comprises:
the identification module is used for identifying the battery module in the second aging state;
and the control module is used for controlling to cut off the battery module in the second aging state.
Optionally, the apparatus further comprises:
the receiving module is used for receiving a cutting instruction of the battery module with the cutting state being a first aging state;
and the cutting-off module is used for cutting off the battery module in the first aging state according to the cutting-off instruction.
According to a further embodiment of the present invention, there is also provided a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
According to yet another embodiment of the present invention, there is also provided an electronic device, including a memory in which a computer program is stored and a processor configured to execute the computer program to perform the steps in any of the above method embodiments.
According to the invention, the state data of a plurality of battery modules in the energy storage unit collected by a battery management system BMS is acquired, wherein the BMS is respectively connected with the plurality of battery modules; determining the states of the plurality of battery modules according to the state data; show respectively in the display screen the state of a plurality of battery module, wherein, the state is used for instructing a plurality of battery modules are in normally or ageing, consequently, can solve among the correlation technique directly monitor whole energy storage unit and lead to the problem that can't discern the single battery module that influences the whole effect of energy storage unit, through carrying out the independent monitoring to single battery module in the energy storage unit, can discern the single battery module that influences the whole effect of energy storage unit, carry out independent control.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a block diagram of a hardware structure of a mobile terminal of a monitoring method for a retired battery according to an embodiment of the present invention;
FIG. 2 is a flow diagram of a method of monitoring retired batteries according to an embodiment of the invention;
FIG. 3 is a schematic illustration of monitoring of retired battery echelon utilization in accordance with an embodiment of the present invention;
FIG. 4 is a block diagram of a monitoring device for retired batteries according to an embodiment of the present invention;
fig. 5 is a block diagram one of a monitoring apparatus for retired batteries according to a preferred embodiment of the present invention;
FIG. 6 is a block diagram two of a monitoring device for retired batteries in accordance with a preferred embodiment of the present invention;
fig. 7 is a block diagram three of a monitoring apparatus for retired batteries according to a preferred embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Example 1
The method provided by the first embodiment of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking a mobile terminal as an example, fig. 1 is a hardware structure block diagram of a mobile terminal of a monitoring method for a retired battery according to an embodiment of the present invention, and as shown in fig. 1, a mobile terminal 10 may include one or more processors 102 (only one is shown in fig. 1) (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA, etc.), and a memory 104 for storing data, and optionally, the mobile terminal may further include a transmission device 106 for a communication function and an input/output device 108. It will be understood by those skilled in the art that the structure shown in fig. 1 is only an illustration, and does not limit the structure of the mobile terminal. For example, the mobile terminal 10 may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.
The memory 104 may be used to store a computer program, for example, a software program of application software and a module, such as a computer program corresponding to the message receiving method in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, so as to implement the method described above. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal 10 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal 10. In one example, the transmission device 106 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
Fig. 2 is a flowchart of a monitoring method for a retired battery according to an embodiment of the present invention, and as shown in fig. 2, the flowchart includes the following steps:
step S202, acquiring state data of a plurality of battery modules in an energy storage unit acquired by a battery management system BMS, wherein the BMS is respectively connected with the plurality of battery modules;
step S204, determining the states of the plurality of battery modules according to the state data;
and S206, respectively displaying the states of the plurality of battery modules in a display screen, wherein the states are used for indicating that the plurality of battery modules are normal or aged.
Acquiring state data of a plurality of battery modules in an energy storage unit acquired by a Battery Management System (BMS) through the steps S202 to S206, wherein the BMS is respectively connected with the plurality of battery modules; determining the states of the plurality of battery modules according to the state data; show respectively in the display screen the state of a plurality of battery module, wherein, the state is used for instructing a plurality of battery modules are in normally or ageing, consequently, can solve among the correlation technique directly monitor whole energy storage unit and lead to the problem that can't discern the single battery module that influences the whole effect of energy storage unit, through carrying out the independent monitoring to single battery module in the energy storage unit, can discern the single battery module that influences the whole effect of energy storage unit, carry out independent control.
The state data in the embodiment of the present invention may include the module capacity and the cell voltage, and the step S202 may specifically include: and acquiring the module capacity and the cell voltage of the plurality of battery modules acquired by the BMS.
Correspondingly, the step S204 may specifically include:
judging whether the capacity loss of the module capacity of each battery module in the plurality of battery modules is smaller than a first preset value or not, and judging whether the voltage difference of the monomer voltage of each battery module is smaller than a second preset value or not, wherein the capacity loss is the difference value between the module capacity and the pre-stored module initial capacity, and the voltage difference is the difference value between the monomer voltage and the pre-stored monomer initial voltage;
determining that the state of the battery module is normal under the condition that the judgment results are yes; otherwise, determining the state of the battery module as a first aging state.
Further, after the state of the battery module is determined to be a first aging state, whether the capacity loss of the module capacity of the battery module is greater than a third preset value or whether the voltage difference of the cell voltage of the battery module is greater than a fourth preset value is judged, wherein the third preset value is greater than the first preset value, and the fourth preset value is greater than the second preset value; and if the judgment result is yes, determining that the state of the battery module is a second aging state.
The first aging state in the embodiment of the invention can be general aging, the second aging state can be serious aging, and the battery module with serious aging can be automatically controlled to be cut off, so that the influence of the battery module on the whole energy storage unit is avoided.
In the embodiment of the present invention, the health status of each battery module may be directly displayed on a display screen, and correspondingly, the step S206 may specifically include: show respectively in the display screen the state of a plurality of battery module is normal, first ageing state or second ageing state, can see out which battery module is normal through the display screen promptly, which is ageing, can also distinguish ageing degree to conveniently carry out corresponding processing to ageing battery module.
In an optional embodiment, the battery modules with severe aging can be automatically switched, after the states of the plurality of battery modules are respectively displayed in the display screen, the battery module with the second aging state is identified, and the battery module with the second aging state is controlled to be cut off, that is, the battery module with severe aging can be directly cut off without human intervention.
In another optional embodiment, for a general aged battery module, since the influence on the entire energy storage unit is not great, whether to switch off or not may be determined manually, specifically, after the states of the plurality of battery modules are respectively displayed in the display screen, a switch-off instruction of the battery module in the first aged state is received, and the battery module in the first aged state is switched off according to the switch-off instruction, that is, the battery module in the general aged state is switched off by manual touch.
The embodiment of the invention provides a management system for a power battery module by gradient utilization, which can monitor the health state of a single battery cell of a retired battery in real time, and can cut off a connecting passage of a certain battery module when the certain battery module shows great inconsistency due to aging of the single battery cell. When other battery modules continue to work, the aged battery modules exit the system, and the whole energy storage unit cannot be scrapped due to aging of one module. The battery module control system mainly comprises a battery module control module and upper computer interface software, monitors the health state of the battery module in real time, and independently controls an aged battery module. When a certain battery module reaches the aging and decommissioning standard, the battery module is cut off, and the influence on the performance of the whole energy storage unit is avoided.
In order to adapt to energy storage units of different brands and different structures, a modular design is adopted, fig. 3 is a schematic diagram of monitoring the gradient utilization of a retired battery according to an embodiment of the present invention, as shown in fig. 3, the monitoring method mainly includes: the touch display module 32, the MCU low-voltage control module 34 and the battery module control module 36 are connected and communicated with each other in a uniform slot mode. The socket interface of the battery module control module 36 includes: the positive input slot, the positive output slot and the low-voltage control signal slot.
Through interface software design, the health state of each battery module of the energy storage unit is displayed in real time, early warning information is given out in time, and the battery pack (namely the energy storage unit) can be manually operated through the software.
In the embodiment of the invention, the retired power battery is detected, sorted and reused, the residual value of the retired battery is fully utilized, the pressure of large-scale retired battery recycling is reduced, the energy is saved, the emission is reduced, and the environment is protected.
The MCU low voltage control module 34 may be composed of a riscalr chip and an external auxiliary circuit thereof, processes the BMS collecting signal, uploads data to the upper computer software, and receives an upper computer software control instruction. The MCU low voltage control module 34 sends a control command to the battery module control module 36 to control the battery module. The MCU low-voltage control module 34 takes a Freescale MC9S12XS128 chip as a main controller and communicates with an upper computer PC through an RS232 serial port, and the upper computer monitors the battery module by adopting Qt open source frame design interface software; the method comprises the following steps that single cell information and charging and discharging data are transmitted between an MCU (microprogrammed control unit) and a Battery Management System (BMS) through a CAN (controller area network) protocol, and the upper computer integrates the single cell data to form Battery module health state information; control commands are sent to the battery module control module 36 via the dupont signal line.
The battery module control module 36 may be composed of a level conversion chip, a switch circuit, and a relay, and receives a control instruction issued by the MCU, and controls the relay to control on/off of a single battery module. And the low-voltage control instruction received by the battery module controls the corresponding relay to be switched on and off through the voltage conversion chip, so that the battery module is controlled. On the premise of not influencing the normal work of other modules, the aging battery pack is retired in advance.
The touch display module 32 is mainly composed of PC upper computer software (tablet PC), and provides a human-computer interaction interface to perform real-time monitoring and early warning on the health condition of the single battery; and the energy storage unit is operated through the software, so that charging and discharging management is realized. The upper computer software receives the battery pack single cell data uploaded by the MCU low-voltage control module 34, and the battery pack single cell data are integrated to obtain the health information of the battery module. The module provides a human-computer interaction interface, monitors the health state of the battery module in real time, provides early warning information, and can manually control the charging and discharging processes of the battery pack according to requirements.
According to the embodiment of the invention, based on the echelon utilization of the power battery, the residual value of the retired power battery is mined separately, the retired recovery pressure of the large-scale power battery is relieved, the energy utilization rate of the battery is improved, the environment is protected, and the cost is saved. The design of the battery module control module 36 can monitor the health condition of the energy storage unit battery module in real time, and cut off the module when the module is aged, so that other battery modules can work normally. The battery module is prevented from being inconsistent due to the single battery core, the conditions of low voltage, unstable performance and the like are avoided, the service life of the energy storage unit is prolonged, and the energy utilization rate is further improved. The whole structure of the system adopts a modular design, and can be adapted to battery packs of different brands and different types, thereby bringing convenience to the popularization and the use of the system.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
Example 2
In this embodiment, a monitoring apparatus for a retired battery is further provided, and is applied to a server, where the monitoring apparatus is used to implement the foregoing embodiments and preferred embodiments, and details of which have been already described are omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 4 is a block diagram of a monitoring apparatus for retired batteries according to an embodiment of the present invention, as shown in fig. 4, including:
the acquiring module 42 is configured to acquire state data of a plurality of battery modules in an energy storage unit acquired by a battery management system BMS, where the BMS is connected to the plurality of battery modules, respectively;
a determining module 44, configured to determine states of the plurality of battery modules according to the state data;
and the display module 46 is used for displaying the states of the plurality of battery modules in a display screen respectively, wherein the states are used for indicating that the plurality of battery modules are normal or aged.
Optionally, the obtaining module 42 is further configured to
Acquiring module capacity and cell voltage of the plurality of battery modules acquired by the BMS, wherein the state data includes the module capacity and the cell voltage.
Fig. 5 is a block diagram of a monitoring apparatus for retired batteries according to a preferred embodiment of the present invention, and as shown in fig. 5, the determining module 44 includes:
a determining unit 52, configured to determine whether a capacity loss of a module capacity of each battery module in the plurality of battery modules is smaller than a first preset value, and determine whether a voltage difference of a cell voltage of each battery module is smaller than a second preset value, where the capacity loss is a difference between the module capacity and a module initial capacity that is pre-stored, and the voltage difference is a difference between the cell voltage and a cell initial voltage that is pre-stored;
a first determining unit 54, configured to determine that the state of the battery module is normal if all the determination results are yes; otherwise, determining the state of the battery module as a first aging state.
Fig. 6 is a second block diagram of a monitoring apparatus for retired batteries according to a preferred embodiment of the present invention, and as shown in fig. 6, the apparatus further includes:
a second determining unit 62, configured to determine whether a capacity loss of the module capacity of the battery module is greater than a third preset value, or determine whether a voltage difference of the cell voltages of the battery module is greater than a fourth preset value, where the third preset value is greater than the first preset value, and the fourth preset value is greater than the second preset value;
and a third determining unit 64 configured to determine that the state of the battery module is the second aging state if the determination result is yes.
Optionally, the display module 46 is also used for
And respectively displaying the states of the plurality of battery modules as a normal state, a first aging state or a second aging state in the display screen.
Fig. 7 is a block diagram three of a monitoring apparatus for retired batteries according to a preferred embodiment of the present invention, as shown in fig. 7, the apparatus further includes:
the identification module 72 is used for identifying the battery module in the second aging state;
and the control module 74 is used for controlling to cut off the battery module with the state of the second aging state.
Optionally, the apparatus further comprises:
the receiving module is used for receiving a cutting instruction of the battery module with the cutting state being a first aging state;
and the cutting-off module is used for cutting off the battery module in the first aging state according to the cutting-off instruction.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.
Example 3
Embodiments of the present invention also provide a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
Alternatively, in the present embodiment, the storage medium may be configured to store a computer program for executing the steps of:
s11, acquiring state data of a plurality of battery modules in an energy storage unit collected by a battery management system BMS, wherein the BMS is respectively connected with the plurality of battery modules;
s12, determining the states of the battery modules according to the state data;
and S13, respectively displaying the states of the plurality of battery modules in a display screen, wherein the states are used for indicating that the plurality of battery modules are normal or aged.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Example 4
Embodiments of the present invention also provide an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the above method embodiments.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
Optionally, in this embodiment, the processor may be configured to execute the following steps by a computer program:
s11, acquiring state data of a plurality of battery modules in an energy storage unit collected by a battery management system BMS, wherein the BMS is respectively connected with the plurality of battery modules;
s12, determining the states of the battery modules according to the state data;
and S13, respectively displaying the states of the plurality of battery modules in a display screen, wherein the states are used for indicating that the plurality of battery modules are normal or aged.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A monitoring method for retired batteries is characterized by comprising the following steps:
acquiring state data of a plurality of battery modules in an energy storage unit, wherein the state data is acquired by a battery management system BMS, the BMS is respectively connected with the plurality of battery modules, and the state data comprises module capacity and monomer voltage;
determining the states of the plurality of battery modules according to the state data;
respectively displaying the states of the plurality of battery modules in a display screen, wherein the states are used for indicating that the plurality of battery modules are normal or aged;
wherein determining the states of the plurality of battery modules according to the state data comprises:
judging whether the capacity loss of the module capacity of each battery module in the plurality of battery modules is smaller than a first preset value or not, and judging whether the voltage difference of the monomer voltage of each battery module is smaller than a second preset value or not, wherein the capacity loss is the difference value between the module capacity and the pre-stored module initial capacity, and the voltage difference is the difference value between the monomer voltage and the pre-stored monomer initial voltage;
determining that the state of the battery module is normal under the condition that the judgment results are yes; otherwise, determining the state of the battery module as a first aging state;
judging whether the capacity loss of the module capacity of the battery module is greater than a third preset value or whether the voltage difference of the monomer voltage of the battery module is greater than a fourth preset value, wherein the third preset value is greater than the first preset value, and the fourth preset value is greater than the second preset value;
and if the judgment result is yes, determining that the state of the battery module is a second aging state.
2. The method of claim 1, wherein displaying the states of the plurality of battery modules in a display screen respectively comprises:
and respectively displaying the states of the plurality of battery modules as a normal state, a first aging state or a second aging state in the display screen.
3. The method according to claim 2, wherein after the states of the plurality of battery modules are respectively displayed in the display screen, the method further comprises:
identifying the battery module in the second aging state;
and controlling to cut off the battery module in the second aging state.
4. The method according to claim 2, wherein after the states of the plurality of battery modules are respectively displayed in the display screen, the method further comprises:
receiving a cutting instruction of the battery module with the cutting state being a first aging state;
and cutting off the battery module in the first aging state according to the cutting-off instruction.
5. A monitoring device for decommissioned batteries, comprising:
the battery management system comprises an acquisition module, a storage module and a management module, wherein the acquisition module is used for acquiring state data of a plurality of battery modules in an energy storage unit acquired by a battery management system BMS, the BMS is respectively connected with the plurality of battery modules, and the state data comprises module capacity and monomer voltage;
the determining module is used for determining the states of the plurality of battery modules according to the state data;
the display module is used for respectively displaying the states of the plurality of battery modules in a display screen, wherein the states are used for indicating that the plurality of battery modules are normal or aged;
wherein the determining module comprises:
the judging unit is used for judging whether the capacity loss of the module capacity of each battery module in the plurality of battery modules is smaller than a first preset value or not and judging whether the voltage difference of the monomer voltage of each battery module is smaller than a second preset value or not, wherein the capacity loss is the difference value between the module capacity and the pre-stored module initial capacity, and the voltage difference is the difference value between the monomer voltage and the pre-stored monomer initial voltage;
the first determining unit is used for determining that the state of the battery module is normal under the condition that the judging results are yes; otherwise, determining the state of the battery module as a first aging state;
the second determining unit is used for judging whether the capacity loss of the module capacity of the battery module is greater than a third preset value or judging whether the voltage difference of the monomer voltage of the battery module is greater than a fourth preset value, wherein the third preset value is greater than the first preset value, and the fourth preset value is greater than the second preset value;
and the third determining unit is used for determining that the state of the battery module is a second aging state under the condition that the judgment result is yes.
6. A storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 1 to 4 when executed.
7. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 1 to 4.
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| CN112467822A (en) * | 2020-10-15 | 2021-03-09 | 中船重工远舟（北京）科技有限公司 | Battery management method, device and system |
| CN112848970B (en) * | 2021-02-20 | 2022-12-13 | 广州橙行智动汽车科技有限公司 | Monitoring method and device and vehicle |
| CN114130713B (en) * | 2021-10-29 | 2023-07-07 | 广东邦普循环科技有限公司 | Battery echelon utilization screening method and device |
| CN114914561A (en) * | 2022-04-27 | 2022-08-16 | 深圳市道通科技股份有限公司 | Power battery monitoring system and method |
| CN115084685B (en) * | 2022-08-22 | 2022-12-13 | 新能动力(北京)智慧能源科技有限公司 | Method and device for dynamically adjusting battery pack and storage medium |
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| CN104052112B (en) * | 2014-06-10 | 2016-05-11 | 广东电网公司电力科学研究院 | Battery pack method for supervising and system |
| US10793008B2 (en) * | 2015-10-20 | 2020-10-06 | Ford Global Technologies, Llc | System and method for indicating battery age |
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