CN113078708B - Control system for power supply equipment, control method, medium and electronic equipment thereof - Google Patents

Control system for power supply equipment, control method, medium and electronic equipment thereof Download PDF

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Publication number
CN113078708B
CN113078708B CN202110349559.5A CN202110349559A CN113078708B CN 113078708 B CN113078708 B CN 113078708B CN 202110349559 A CN202110349559 A CN 202110349559A CN 113078708 B CN113078708 B CN 113078708B
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Prior art keywords
control module
control
modules
module
slave
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CN113078708A (en
Inventor
徐楠
谈作伟
栾淑利
晏辉
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Svolt Energy Technology Wuxi Co Ltd
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Svolt Energy Technology Wuxi 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00036—Charger exchanging data with battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

The present disclosure relates to a control system for a power supply apparatus, a control method thereof, a medium, and an electronic apparatus. The power supply equipment comprises N battery packs connected in parallel, the control system comprises N control modules connected with the N battery packs in a one-to-one correspondence mode, N is more than or equal to 2, and each control module is used for collecting characteristic information of the corresponding battery pack; one control module of the N control modules is a master control module, the other control modules of the N control modules are slave control modules, the master control module is used for receiving the characteristic information sent by the slave control modules and controlling the balance of electric quantity among the battery packs according to the collected and received characteristic information, wherein any control module can be adjusted to be the master control module. Therefore, when the main control module fails, other control modules can be adjusted to serve as the main control module, so that normal operation of the system is ensured, and therefore the fault tolerance performance in the scheme provided by the disclosure is high.

Description

Control system for power supply equipment, control method, medium and electronic equipment thereof
Technical Field
The present disclosure relates to the technical field of control methods for power supply devices, and in particular, to a control system for a power supply device, a control method, a medium, and an electronic device.
Background
The parallel power supply of the battery pack is widely applied to small-sized electric equipment and is common to a power supply of a motor home and a power supply of a communication base station. For example, a single battery pack is composed of 4-5 battery cells connected in series, and 3-4 battery packs are connected in parallel to achieve stable power supply for equipment.
The power supply system provided by the parallel battery packs usually further includes components such as a control board, a relay, and a display screen. One control panel is connected with all the battery packs, the control panel realizes monitoring and protection of the battery core parameters and control logics of charging and discharging, a relay controls charging and discharging start and stop of a single battery pack, and the display screen serves as display equipment and provides a visual interface for customers.
Disclosure of Invention
The invention aims to provide a control system for power supply equipment with high fault tolerance performance, a control method, a medium and electronic equipment thereof.
In order to achieve the above object, the present disclosure provides a control system for a power supply device, where the power supply device includes N battery packs connected in parallel, the control system includes N control modules connected to the N battery packs in a one-to-one correspondence, N is greater than or equal to 2, and each control module is configured to acquire feature information of a corresponding battery pack;
one control module of the N control modules is a master control module, the other control modules of the N control modules are slave control modules, the master control module is used for receiving the characteristic information sent by the slave control modules and controlling the balance of electric quantity among the battery packs according to the collected and received characteristic information, and any control module can be adjusted to be the master control module.
Optionally, the control system further includes an output module, the main control module is further configured to send the collected and received feature information and the received power balance information to the output module, and the output module is configured to output the received feature information and the received power balance information.
Optionally, any control module is randomly set as the master control module.
Optionally, the control module is configured to, when accessing the circuit, determine whether another control module has accessed the circuit, if not, serve as the master control module, send a host signal after the another control module accesses the circuit, and if so, serve as the slave control module, and receive the host signal sent by any one of the another control module.
Optionally, if the current master control module determines that a fault occurs, any one of the current slave control modules is randomly set as a new master control module.
Optionally, the master control module is configured to send a control instruction to the slave control module according to the feature information of each battery pack, so that the slave control module controls the electric quantity of the corresponding battery pack to flow in or out, so as to balance the electric quantities of the N battery packs.
The present disclosure also provides a control method for a power supply apparatus, where the power supply apparatus includes N battery packs connected in parallel, the control method is applied to a control system, the control system includes N control modules connected in one-to-one correspondence with the N battery packs, N is greater than or equal to 2, and the control method includes:
each control module acquires the characteristic information of the corresponding battery pack;
the master control module receives the characteristic information sent by the slave control module, and controls the balance of electric quantity among the battery packs according to the collected and received characteristic information, wherein one control module of the N control modules is the master control module, other control modules of the N control modules are the slave control modules, and any control module can be adjusted to be the master control module.
Optionally, the control system further includes an output module, and the control method includes:
the main control module sends the collected and received characteristic information and the electric quantity balance information to the output module;
and the output module outputs the received characteristic information and the received electric quantity balance information.
Optionally, the control method further includes:
and randomly setting a control module as the main control module.
Optionally, the control method further includes:
when the control module is connected with a circuit, whether other control modules are connected with the circuit is judged, if not, the control module is used as the main control module, after the other control modules are connected with the circuit, a host signal is sent, and if the control modules are connected with the circuit, the control module is used as the slave control module and receives the host signal sent by any one of the other control modules.
Optionally, the control method further includes:
and if the current master control module is judged to have a fault, randomly setting any control module in the current slave control modules as a new master control module.
Optionally, the controlling module controls to balance the electric quantity between the battery packs according to the collected and received characteristic information, including:
the master control module sends a control instruction to the slave control module according to the characteristic information of each battery pack;
and the slave control module is used for controlling the electric quantity of the corresponding battery pack to flow in or out according to the received control instruction so as to balance the electric quantities of the N battery packs.
The present disclosure also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above-described method provided by the present disclosure.
The present disclosure also provides an electronic device, comprising:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to implement the steps of the above-described method provided by the present disclosure.
Through the technical scheme, the N control modules are connected with the N battery packs in a one-to-one correspondence mode, and any control module can be adjusted to be a main control module to control the balance of electric quantity among the battery packs. Therefore, when the main control module fails, other control modules can be adjusted to serve as the main control module, so that normal operation of the system is ensured, and therefore the fault tolerance performance in the scheme provided by the disclosure is high.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic block diagram of a control system for a power supply apparatus according to an exemplary embodiment;
FIG. 2 is a schematic block diagram of a control system for a power supply apparatus provided in accordance with another exemplary embodiment;
fig. 3 is a flowchart of a control method for a power supply apparatus according to an exemplary embodiment.
Detailed Description
The following detailed description of the embodiments of the disclosure refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
The present disclosure is applied to a power supply apparatus including N battery packs connected in parallel. Fig. 1 is a schematic structural diagram of a control system for a power supply device according to an exemplary embodiment. As shown in fig. 1, the control system 100 may include N control modules 10 connected to the N battery packs 20 in a one-to-one correspondence manner, where N is greater than or equal to 2, and each control module 10 is configured to collect characteristic information of the corresponding battery pack 20.
One control module 10 of the N control modules 10 is a master control module, and the other control modules 10 of the N control modules are slave control modules. The master control module is configured to receive the feature information sent by the slave control module, and control the power balance between the battery packs according to the collected and received feature information, where any one of the control modules 10 can be adjusted to be the master control module.
The N control modules 10 may communicate with each other in a Modbus RTU communication manner. One master control module may be determined from the N control modules 10 in a variety of ways, and the master control module may be adjusted according to a predetermined control strategy, i.e., the current master control module is changed to be the slave control module in the subsequent control process, and the current slave control module is changed to be the master control module in the subsequent control process.
Any two control modules 10 can communicate with each other, and any two control modules 10 can confirm the master-slave relationship. When one of the control modules 10 is changed from a master control module to a slave control module or from a slave control module to a master control module, the other control modules 10 can be changed adaptively through communication with the other control modules. For example, when the current control module 10 changes the slave control mode applicable to the slave control module to the master control mode of the master control module, the host signal is sent to the other control modules 10, and when the control module 10 receives the host signal sent by the other control modules 10, the self mode is changed to or maintained in the slave control mode, so that the self mode is changed to or maintained in the slave control module 10.
Compared with the structure that one control board is connected with all the battery packs in the related art, the scheme of the disclosure enables the main control module for controlling the balance of the electric quantity among the battery packs to be adjusted in the N control modules, and therefore, the main control module is not fixed on one control board, and the possibility of stopping the operation of the control system is greatly reduced.
Through the technical scheme, the N control modules are connected with the N battery packs in a one-to-one correspondence mode, and any control module can be adjusted to be a main control module to control the balance of electric quantity among the battery packs. Therefore, when the main control module fails, other control modules can be adjusted to serve as the main control module, so that normal operation of the system is ensured, and therefore the fault tolerance performance in the scheme provided by the disclosure is high.
Fig. 2 is a schematic structural diagram of a control system for a power supply device according to another exemplary embodiment. As shown in fig. 2, the control system 100 may further include an output module 30 on the basis of fig. 1. The main control module is further configured to send the collected and received feature information and the power balance information to the output module 30. The output module 30 is configured to output the received characteristic information and the power balance information.
An output module 30 may be connected to each control module 10, and the control module 10, which is set as a main control module, may transmit information to the output module 30. The output module 30 may be a display screen providing a visual interface to the customer.
In yet another embodiment, any one of the control modules 10 may be randomly configured as a master control module. For example, without setting specific conditions, an external controller may randomly designate one of the control modules 10 as a master control module, and the control module 10 designated as the master control module may operate in a master control mode, in the master control mode, the control module 10 collects feature information of a corresponding battery pack, receives feature information sent by other control modules 10, and sends a control instruction to the slave control module according to a control policy, so that the slave control module controls the electric quantity of the corresponding battery pack to flow into or out of the slave control module, thereby achieving the electric quantity balance of N battery packs; the control module 10 designated as the slave control module may operate in a slave control mode, in which the control module 10 collects the characteristic information of the corresponding battery pack, sends the characteristic information to the master control module, receives the control instruction sent by the master control module, and controls the electric quantity of the corresponding battery pack to flow in or out according to the control instruction, so as to achieve the electric quantity balance of the N battery packs.
In yet another embodiment, the control module 10 may automatically adjust its control mode. For example, the control module 10 is configured to determine whether another control module has been connected to the circuit when the circuit is connected, and if not, the control module is used as a master control module (to switch the self mode to the master control mode), and after the other control module has been connected to the circuit, the control module sends a master signal, and if so, the control module is used as a slave control module (to switch the self mode to the slave control mode), and receives the master signal sent by any one of the other control modules.
That is, the master-slave relationship is automatically determined according to the priority of the access circuit of the control module 10. Firstly, a control module 10 of an access circuit sets itself as a main control module and sends a host signal to the outside; the control module 10 of the access circuit will then set itself as a slave control module in case of receiving the master signal. In the embodiment, the master-slave relationship is automatically determined according to the sequence of the access circuit, the logic is clear, and the program is simple.
For example, the N control modules 10 communicate with each other in a Modbus RTU communication manner, and the control modules 10 are configured to feed back a response message when receiving an inquiry message. When the control module 10 accesses the circuit, it sends an inquiry message on the Modbus, and if no response message is received within a predetermined time, it indicates that there are no other control modules 10 on the bus, and at this time, the operation mode of the control module 10 may be set as the master control mode. If the response message is received within the predetermined first time period, it indicates that there are other control modules 10 on the bus, and at this time, the operation mode of the bus may be set to the slave control mode.
The master control module can periodically send a host signal on the Modbus, and the control modules receiving the host signal can set or switch the master control module into a slave control mode. If the slave control module does not receive the host signal within the preset second duration, the slave control module can be switched to operate in the master control mode, and the host signal is sent on the Modbus.
In another embodiment, if the current master control module determines that a failure occurs, any one of the current slave control modules is randomly set as a new master control module.
If the current main control module is judged to have a fault, the current main control module can be controlled to stop running through the external controller, and any one of the rest control modules is set as a new main control module at random. The control module set as the new master control module operates in a master control mode and sends a host signal to other control modules, and the other control modules set themselves as slave control modules to operate in a slave control mode when receiving the host signal.
In this embodiment, when the current master control module fails, the main body of the master control module is switched to ensure normal operation of the system, so that the fault tolerance of the system is high.
In another embodiment, the master control module is configured to send a control instruction to the slave control module according to the characteristic information of each battery pack, so that the slave control module controls the inflow or outflow of the electric quantity of the corresponding battery pack, so as to equalize the electric quantities of the N battery packs. For example, if the received control command is to control the battery pack to discharge,
the slave control module can comprehensively determine control over inflow or outflow of electric quantity of the corresponding battery pack by considering the detected characteristic information of the corresponding battery pack on the other hand according to the control instruction sent by the master control module.
Fig. 3 is a flowchart of a control method for a power supply apparatus according to an exemplary embodiment. Wherein, power supply unit includes N battery package of parallel connection. The control method is applied to the control system disclosed by the disclosure, the control system comprises N control modules which are connected with N battery packs in a one-to-one correspondence mode, and N is more than or equal to 2. As shown in fig. 3, the method may include the following steps.
And S101, each control module acquires the characteristic information of the corresponding battery pack.
And S102, the master control module receives the characteristic information sent by the slave control modules and controls the balance of the electric quantity among the battery packs according to the collected and received characteristic information, wherein one control module in the N control modules is the master control module, other control modules in the N control modules are the slave control modules, and any control module can be adjusted to be the master control module.
Optionally, the control system further includes an output module, and the control method further includes:
the main control module sends the collected and received characteristic information and the electric quantity balance information to the output module; and the output module outputs the received characteristic information and the received electric quantity balance information.
Optionally, the control method may further include: and randomly setting a control module as a main control module.
Optionally, the control method may further include:
when the control module is connected with the circuit, whether other control modules are connected with the circuit is judged, if not, the control module is used as a main control module, after the other control modules are connected with the circuit, a host signal is sent, and if the control modules are connected with the circuit, the control module is used as a slave control module and receives the host signal sent by any one of the other control modules.
Optionally, the control method may further include: and if the current master control module is judged to have a fault, randomly setting any control module in the current slave control modules as a new master control module.
Optionally, the controlling the main control module to balance the electric quantity between the battery packs according to the collected and received characteristic information may include:
the master control module sends a control instruction to the slave control module according to the characteristic information of each battery pack;
the slave control module is used for controlling the electric quantity of the corresponding battery pack to flow in or out according to the received control instruction so as to balance the electric quantity of the N battery packs.
With regard to the method in the above-described embodiment, the specific manner in which each step performs the operation has been described in detail in the embodiment related to the system, and will not be elaborated upon here.
Through the technical scheme, the N control modules are connected with the N battery packs in a one-to-one correspondence mode, and any control module can be adjusted to be a main control module to control the balance of electric quantity among the battery packs. Therefore, when the main control module fails, other control modules can be adjusted to serve as the main control module, so that normal operation of the system is ensured, and therefore the fault tolerance performance in the scheme provided by the disclosure is high.
The present disclosure also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above-described method provided by the present disclosure.
The present disclosure also provides an electronic device comprising a memory and a processor, the memory having stored thereon a computer program; the processor is used to execute the computer program in the memory to implement the steps of the above-described method provided by the present disclosure.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
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, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (8)

1. A control system for power supply equipment comprises N battery packs connected in parallel, and is characterized in that the control system comprises N control modules connected with the N battery packs in a one-to-one correspondence manner, wherein N is more than or equal to 2, and each control module is used for acquiring characteristic information of the corresponding battery pack;
one control module of the N control modules is a master control module, the other control modules of the N control modules are slave control modules, and the master control module is used for receiving the characteristic information sent by the slave control modules and controlling the balance of electric quantity among the battery packs according to the collected and received characteristic information, wherein any control module can be adjusted to be the master control module;
the control module is used for judging whether other control modules are accessed to the circuit when the circuit is accessed, if not, the control module is used as the main control module, after the other control modules are accessed to the circuit, a host signal is sent, if yes, the control module is used as the slave control module, the host signal sent by any control module in the other control modules is received, if a slave control module does not receive the host signal within a preset second time period, the control module is switched to be the main control module, and the host signal is sent on a bus.
2. The control system according to claim 1, further comprising an output module, wherein the main control module is further configured to send the collected and received feature information and power balance information to the output module, and the output module is configured to output the received feature information and power balance information.
3. The control system of claim 1, wherein if the current master control module determines that a fault has occurred, any one of the current slave control modules is randomly set as a new master control module.
4. The control system according to claim 1, wherein the master control module is configured to send a control instruction to the slave control module according to the characteristic information of each battery pack, so that the slave control module controls the electric quantity of the corresponding battery pack to flow in or out, so as to balance the electric quantities of the N battery packs.
5. A control method for a power supply device, wherein the power supply device comprises N battery packs connected in parallel, the control method is applied to a control system, the control system comprises N control modules connected with the N battery packs in a one-to-one correspondence manner, N is larger than or equal to 2, and the control method comprises the following steps:
each control module acquires the characteristic information of the corresponding battery pack;
the method comprises the steps that a master control module receives characteristic information sent by a slave control module and controls the balance of electric quantity among battery packs according to the collected and received characteristic information, wherein one control module of N control modules is the master control module, other control modules of the N control modules are slave control modules, and any control module can be adjusted to be the master control module;
the control method further comprises the following steps:
when the control module is accessed to the circuit, whether other control modules are accessed to the circuit is judged, if not, the control module is used as the main control module, after the other control modules are accessed to the circuit, a host signal is sent, if yes, the control module is used as the slave control module, the host signal sent by any control module in the other control modules is received, if a slave control module does not receive the host signal within a preset second time, the control module is switched to be the main control module, and the host signal is sent on a bus.
6. The control method of claim 5, wherein the control system further comprises an output module, the control method further comprising:
the main control module sends the collected and received characteristic information and the electric quantity balance information to the output module;
and the output module outputs the received characteristic information and the received electric quantity balance information.
7. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 5 to 6.
8. An electronic device, comprising:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to carry out the steps of the method of any one of claims 5 to 6.
CN202110349559.5A 2021-03-31 2021-03-31 Control system for power supply equipment, control method, medium and electronic equipment thereof Active CN113078708B (en)

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KR100991084B1 (en) * 2005-12-15 2010-10-29 주식회사 엘지화학 Multi battery pack system and control method thereof, and battery pack using the same
CN102738525A (en) * 2012-06-14 2012-10-17 沈阳中科正方新能源技术有限公司 Battery management system of vehicle-mounted lithium power battery
CN105786736A (en) * 2014-12-18 2016-07-20 深圳市中兴微电子技术有限公司 Method, chip and device for multi-chip cascading
CN108859818A (en) * 2018-06-13 2018-11-23 浙江工贸职业技术学院 Automobile power cell monitoring system
CN209351267U (en) * 2018-09-14 2019-09-06 特瓦特能源科技有限公司 Charge control system
CN109742831A (en) * 2019-03-19 2019-05-10 莱克电气股份有限公司 A kind of master-slave mode battery control system and method
CN111478387A (en) * 2020-04-09 2020-07-31 苏州桑倍储能技术有限公司 Battery management system

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