CN114335764B - Control method and device, energy storage system and non-volatile computer readable storage medium - Google Patents
Control method and device, energy storage system and non-volatile computer readable storage medium Download PDFInfo
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Abstract
The application discloses a control method, a control device, an energy storage system and a nonvolatile computer readable storage medium. The control method comprises the following steps: the work of the power storage module is controlled through the first control chip, and a holding signal is sent to the second control chip through the first control chip; and if the second control chip cannot receive the holding signal within the preset time, switching the second control chip to control the work of the power storage module. The first control chip continuously sends the holding signal to the second control chip to report that the first control chip is always in a normal working state, however, when the second control chip does not receive the holding signal sent by the first control chip within a preset time, the first control chip is indicated to have a fault, and the second control chip is switched to control the work of the power storage module. Therefore, the safety and stability of the power storage module can be effectively ensured by configuring the dual-redundancy control chip and utilizing continuous communication between the two control chips.
Description
Technical Field
The present disclosure relates to the field of battery technologies, and more particularly, to a control method, a control device, an energy storage system, and a non-volatile computer readable storage medium.
Background
At present, with the development of electronic devices, the requirements on batteries are also higher, a single battery cannot meet the increasing electric quantity requirement, and in the related art, a plurality of batteries are often combined together and controlled by a main control to realize power supply, however, once the main control fails, serious potential safety hazard problems are easily caused, so that a scheme capable of effectively preventing the potential safety hazard caused by the out-of-control of the main control is needed.
Disclosure of Invention
The embodiment of the application provides a control method, a control device, an energy storage system and a nonvolatile computer readable storage medium.
The control method of the embodiment of the application comprises the steps of controlling the work of the electricity storage module through a first control chip, and sending a holding signal to a second control chip through the first control chip; and if the second control chip cannot receive the holding signal within the preset time length, switching the second control chip to control the work of the electricity storage module.
The control device of the embodiment of the application comprises a control module and a switching module. The control module is used for controlling the work of the power storage module through the first control chip and sending a holding signal to the second control chip through the first control chip; and the switching module is used for switching the second control chip to control the work of the electricity storage module if the second control chip cannot receive the holding signal within a preset time length.
The energy storage system comprises an electricity storage module, a first control chip and a second control chip, wherein the first control chip is used for controlling the electricity storage module to work and sending a holding signal to the second control chip; and the second control chip is used for controlling the work of the electricity storage module when the holding signal is not received within a preset time.
The non-transitory computer readable storage medium of the embodiments of the present application contains a computer program, which when executed by one or more processors, causes the processors to perform a control method of: the work of the power storage module is controlled through the first control chip, and a holding signal is sent to the second control chip through the first control chip; and if the second control chip cannot receive the holding signal within the preset time length, switching the second control chip to control the work of the electricity storage module.
In the control method, the control device, the energy storage system and the non-volatile computer readable storage medium of the embodiment of the application, the first control chip continuously sends the holding signal to the second control chip to report that the first control chip is always in a normal working state, at this time, the power storage module is controlled to work normally by the first control chip, however, when the second control chip does not receive the holding signal sent by the first control chip within a preset time, the first control chip is indicated to fail and cannot run normally, so that the second control chip is switched to control the work of the power storage module. Therefore, the safety and stability of the power storage module can be effectively ensured by configuring the dual-redundancy control chip and utilizing continuous communication between the two control chips.
Additional aspects and advantages of embodiments of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a flow diagram of a control method of certain embodiments of the present application;
FIG. 2 is a block diagram of a control device according to certain embodiments of the present application;
FIG. 3 is a schematic diagram of an energy storage system according to certain embodiments of the present application;
FIG. 4 is a flow chart of a control method of certain embodiments of the present application;
FIG. 5 is a flow chart of a control method of certain embodiments of the present application;
FIG. 6 is a schematic diagram of a connection state of a non-volatile computer readable storage medium and a processor according to some embodiments of the present application.
The main element numbers:
the energy storage system 100, the first control chip 20, the second control chip 30, the third control chip 40, the fourth control chip 50, the electricity storage module 60 and the controller area network bus 70;
a power storage module 61, a battery pack 62, and a battery 63.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the embodiments of the present application and are not to be construed as limiting the embodiments of the present application.
Referring to fig. 1, a control method is provided in an embodiment of the present application. The control method comprises the following steps:
011: the operation of the power storage module 60 is controlled by the first control chip 20, and a holding signal is sent to the second control chip 30 by the first control chip 20;
012: if the second control chip 30 does not receive the hold signal within the predetermined time period, the second control chip 30 is switched to control the operation of the power storage module 60.
Referring to fig. 2, a control device 10 is provided in an embodiment of the present application. The control device 10 comprises a control module 11 and a switching module 12. The control method of the embodiment of the present application is applicable to the control device 10. Wherein the control module 11 and the switching module 12 are configured to perform step 011 and step 012, respectively. That is, the control module 11 is configured to control the operation of the power storage module 60 through the first control chip 20, and send a holding signal to the second control chip 30 through the first control chip 20; the switching module 12 is configured to switch the second control chip 30 to control the operation of the power storage module 60 if the second control chip 30 does not receive the hold signal within a predetermined period of time.
Referring to fig. 3, an energy storage system 100 is further provided in an embodiment of the present application. The energy storage system 100 includes a power storage module 60, a first control chip 20, and a second control chip 30. The control method of the embodiments of the present application may be applied to the energy storage system 100. The first control chip 20 is used for controlling the operation of the power storage module 60 and sending a holding signal to the second control chip 30; the second control chip 30 is configured to control the operation of the power storage module 60 when the hold signal is not received within a predetermined period of time. That is, the first control chip 20 may be used to perform step 011, and the second control chip 30 may be used to perform step 012.
Specifically, the energy storage system 100 includes a first control chip 20, a second control chip 30, a third control chip 40, a fourth control chip 50, an electricity storage module 60, and a controller area network (Controller Area Network, CAN) bus 70. The first control chip 20, the second control chip 30, the third control chip 40, the fourth control chip 50 and the electricity storage module 60 are all in communication connection through a controller area network bus 70.
It can be understood that the first control chip 20 and the second control chip 30 are all in communication connection through the controller area network bus 70, so that the wiring is simpler, and the original wiring is hardly changed when the second control chip 30 is newly added, so that the updating cost of the power storage system 100 is lower. In other embodiments, the first control chip 20 and the second control chip 30 may communicate through a universal asynchronous receiver Transmitter (Universal Asynchronous Receiver/Transmitter, UART); alternatively, the first control chip 20 and the second control chip 30 may communicate via an I2C bus (Inter-Integrated Circuit, I2C), or the like.
The power storage module 60 includes a power storage module 61, the power storage module 61 includes a battery pack 62, and the battery pack 62 is composed of a plurality of batteries 63. The fourth control chip 50 is connected with the battery pack 62 to acquire information of the battery pack 62, so as to realize control of the battery pack 62; the third control chip 40 is connected with the power storage module 61 to acquire information of the power storage module 61, thereby realizing control of the power storage module 61; the first control chip 20 and the second control chip 30 are connected with the electricity storage module 60 to obtain information of the electricity storage module 60, thereby realizing control of the electricity storage module 60.
Therefore, compared with the case that all the information of the battery 63 is handed to the first control chip 20 or the second control chip 30 for processing and controlling, the efficiency is lower, the hierarchical control is realized by using different control chips through the hierarchical structure of the power storage module 60, so that the control and processing efficiency of the power storage module 60 can be improved, and all the function control is not required to be performed by the first control chip 20 or the second control chip 30 serving as a master control, but the control chip of the corresponding level is used for executing, thereby reducing the power consumption of the function control.
In the initial state, the first control chip 20 is used to control the whole power storage module 60, for example, to control the power storage module 60 to discharge, and to realize the charging of the power storage module 60 when the power storage module is connected to the charging interface. And when the first control chip 20 controls the power storage module 60, the first control chip 20 keeps keeping the signal to the second control chip 30, so that the first control chip 20 always holds the control right of the power storage module 60.
When the first control chip 20 fails, it is difficult to continue transmitting the holding signal to the second control chip 30, and at this time, in order to prevent the potential safety hazard (such as burnout, explosion, etc.) of the power storage module 60, the second control chip 30 will take over the control right of the power storage module 60. The first control chip 20 and the second control chip 30 may be the same control chip, so that when the second control chip 30 takes over the control right of the power storage module 60, all functions of the first control chip 20 in controlling the power storage module 60 can be realized, and thus the safety and stability of the battery 63 system are ensured.
In other embodiments, the second control chip 30 may send a feedback signal to the first control chip 20 when receiving the hold signal, and determine that the second control chip 30 has a fault when the first control chip 20 does not receive the feedback signal, and may report a fault to replace the second control chip 30. In this way, through the mutual communication between the first control chip 20 and the second control chip 30, the first control chip 20 and the second control chip 30 can be ensured to be always in a normal state, and the safety of the electricity storage system is improved.
In the control method, the control device 10 and the energy storage system 100 of the embodiment, the first control chip 20 continuously sends the retention signal to the second control chip 30 to report that the first control chip 20 is always in a normal working state, at this time, the power storage module 60 is controlled to work normally by the first control chip 20, however, when the retention signal sent by the first control chip 20 is not received by the second control chip 30 within a predetermined period of time, it is indicated that the first control chip 20 fails and cannot operate normally, therefore, the second control chip 30 is switched to control the work of the power storage module 60 at this time, so that the potential safety hazard caused by out of control is prevented by the double redundant control chip and the continuous communication between the two control chips, and the safety and stability of the power storage module 60 are ensured.
Referring to fig. 2, 3 and 4, in some embodiments, the hold signal is a heartbeat signal, and step 011 includes:
0111: the heartbeat signal is transmitted to the second control chip 30 by the first control chip 20 at a predetermined period.
In some embodiments, the control module 11 is further configured to perform step 0111. I.e. the control module 11 is also arranged to send a heartbeat signal to the second control chip 30 via the first control chip 20 at predetermined cycles.
In some embodiments, the first control chip 20 is further configured to perform step 0111. I.e. the first control chip 20 is arranged to send a heartbeat signal to the second control chip 30 at predetermined cycles through the first control chip 20.
Specifically, in order to reduce power consumption, when the first control chip 20 fails, a heartbeat signal is sent to the second control chip 30 according to a predetermined period, for example, a heartbeat signal is sent to the second control chip 30 every 1 second, or a heartbeat signal is sent to the second control chip 30 every 2 seconds, etc., it is understood that a greater potential safety hazard is generally not generated when the main control fails for 1 second or 2 seconds, and therefore, a greater predetermined period, for example, 5 seconds/time, 10 seconds/time, etc., may be set based on power consumption. In addition, the predetermined time period may be set according to a predetermined period, for example, the predetermined time period is equal to a time period corresponding to the predetermined period, for example, the predetermined period is 5 seconds/time, and the predetermined time period is 5 seconds.
Referring to fig. 2, 3 and 5, in some embodiments, the control method further includes:
013: receiving the signal generated by the power storage module 60 through the first control chip 20 to generate a first received signal, and receiving the signal generated by the power storage module 60 through the second control chip 30 to generate a second received signal;
014: and judging the fault condition of the first control chip 20, the second control chip 30 and/or the electricity storage module 60 according to the first receiving signal and the second receiving signal.
In some embodiments, the control device 10 further includes a generating module 13 and a determining module 14. The generating module 13 and the judging module 14 are also configured to perform step 013 and step 014, respectively. That is, the generating module 13 is configured to receive the signal generated by the power storage module 60 through the first control chip 20 to generate a first received signal, and receive the signal generated by the power storage module 60 through the second control chip 30 to generate a second received signal; the judging module 14 is configured to judge a fault condition of the first control chip 20, the second control chip 30 and/or the power storage module 60 according to the first received signal and the second received signal.
In certain embodiments, the first control chip 20 and the second control chip 30 cooperate to perform step 013, and the first control chip 20 is configured to perform step 014. That is, the first control chip 20 is configured to perform receiving the signal generated by the power storage module 60 to generate a first received signal; the second control chip 30 receives the signal generated by the power storage module 60 to generate a second receiving signal; the first control chip 20 is further configured to determine a fault condition of the first control chip 20, the second control chip 30 and/or the power storage module 60 according to the first received signal and the second received signal.
Specifically, the first control chip 20 and the second control chip 30 may simultaneously receive the signal generated by the power storage module 60 (e.g. the fourth control chip 50 collects the information of the battery pack 62 and sends the information of the whole power storage module 61 to the third control chip 40, and the third control chip 40 sends the information of the whole power storage module 61 to the first control chip 20 and the second control chip 30), such as the information of the battery 63, etc., and the first control chip 20 may generate the first receiving signal according to the signal generated by the power storage module 60; the second control chip 30 receives the signal generated by the power storage module 60 and can generate a second receiving signal; the first received signal and the second received signal are generally identical when both the first control chip 20 and the second control chip 30 are operating normally, and indicate that the first control chip 20 and/or the second control chip 30 has/have failed when the first received signal and the second received signal are not identical (e.g., the signals are not identical); when the first received signal and/or the second received signal are/is null signals, that is, the power storage module 60 cannot generate signals, it is indicated that the power storage module 60 may fail, and the signals cannot be normally transmitted. At this time, it is necessary to stop the power supply or discharge of the power storage module 60 and perform the detection of the first control chip 20, the second control chip 30 and the power storage module 60.
In addition, when the controller area network bus 70 is damaged, the first received signal and/or the second received signal may be empty, so that the controller area network bus 70 may be detected at the same time, and the power storage system is always in a normal state, thereby increasing the safety of the power storage system.
Referring to fig. 6, embodiments of the present application also provide a non-transitory computer readable storage medium 200 containing a computer program 201. The computer program 201, when executed by one or more processors 300, causes the one or more processors 300 to perform the control method of any of the embodiments described above. The processor 300 may be any of the control chips (e.g., the first control chip 20, the second control chip 30, the third control chip 40, or the fourth control chip 50).
For example, referring to fig. 1, the computer program 201, when executed by one or more processors 300, causes the processors 300 to perform the following control methods:
011: the operation of the power storage module 60 is controlled by the first control chip 20, and a holding signal is sent to the second control chip 30 by the first control chip 20;
012: if the second control chip 30 does not receive the hold signal within the predetermined time period, the second control chip 30 is switched to control the operation of the power storage module 60.
For another example, referring to fig. 4, the computer program 201, when executed by one or more processors 300, causes the processors 300 to perform the following control method:
0111: the heartbeat signal is transmitted to the second control chip 30 by the first control chip 20 at a predetermined period.
Also for example, referring to fig. 5, computer program 201, when executed by one or more processors 300, causes the processors 300 to perform the following control methods:
013: receiving the signal generated by the power storage module 60 through the first control chip 20 to generate a first received signal, and receiving the signal generated by the power storage module 60 through the second control chip 30 to generate a second received signal;
014: and judging the fault condition of the first control chip 20, the second control chip 30 and/or the electricity storage module 60 according to the first receiving signal and the second receiving signal.
In the description of the present specification, reference to the terms "certain embodiments," "in one example," "illustratively," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the present application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the present application.
Claims (7)
1. A control method, characterized by comprising:
the work of the power storage module is controlled through the first control chip, and a holding signal is sent to the second control chip through the first control chip;
if the second control chip cannot receive the holding signal within the preset time length, switching the second control chip to control the work of the electricity storage module;
receiving a signal generated by the power storage module through the first control chip to generate a first receiving signal, and receiving a signal generated by the power storage module through the second control chip to generate a second receiving signal;
judging the fault condition of the first control chip, the second control chip and/or the electricity storage module according to the first receiving signal and the second receiving signal;
the judging the fault condition of the first control chip, the second control chip and/or the electricity storage module according to the first receiving signal and the second receiving signal comprises:
when the first receiving signal and the second receiving signal are inconsistent, determining that the first control chip and/or the second control chip have faults;
and when the first receiving signal and/or the second receiving signal is/are null signals, determining that the power storage module fails.
2. The control method according to claim 1, wherein the hold signal is a heartbeat signal, and the sending, by the first control chip, the hold signal to the second control chip includes:
and sending the heartbeat signal to the second control chip through the first control chip according to a preset period.
3. The control method of claim 1, wherein the first control chip, the second control chip, and the power storage module are connected by a controller area network bus.
4. A control device, characterized in that the control device comprises:
the control module is used for controlling the work of the power storage module through the first control chip and sending a holding signal to the second control chip through the first control chip;
the switching module is used for switching the second control chip to control the work of the electricity storage module if the second control chip cannot receive the holding signal within a preset time length;
the control device also comprises a generation module and a judgment module; the generating module is used for receiving the signal generated by the electricity storage module through the first control chip to generate a first receiving signal, and receiving the signal generated by the electricity storage module through the second control chip to generate a second receiving signal; the judging module is used for judging the fault condition of the first control chip, the second control chip and/or the electricity storage module according to the first receiving signal and the second receiving signal; the judging module is further used for determining that the first control chip and/or the second control chip fails when the first received signal and the second received signal are inconsistent; and when the first receiving signal and/or the second receiving signal is/are null signals, determining that the power storage module fails.
5. The energy storage system is characterized by comprising an electricity storage module, a first control chip and a second control chip, wherein the first control chip is used for controlling the operation of the electricity storage module and sending a holding signal to the second control chip; the second control chip is used for controlling the work of the electricity storage module when the holding signal is not received within a preset time; the first control chip receives the signal generated by the power storage module to generate a first receiving signal, and the second control chip receives the signal generated by the power storage module to generate a second receiving signal; when the first receiving signal and the second receiving signal are inconsistent, determining that the first control chip and/or the second control chip have faults; and when the first receiving signal and/or the second receiving signal is/are null signals, determining that the power storage module fails.
6. The energy storage system of claim 5, wherein the power storage module comprises a power storage module comprising a battery pack, the energy storage system further comprising a third control chip and a fourth control chip, the fourth control chip being connected to the battery pack to obtain information of one or more of the battery packs; the third control chip is connected with the electricity storage module to acquire information of the electricity storage module.
7. A non-transitory computer readable storage medium comprising a computer program which, when executed by a processor, causes the processor to perform the control method of any one of claims 1-3.
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