CN113054266A - Data exchange unit and data exchange system suitable for whole package utilization of echelon batteries - Google Patents

Data exchange unit and data exchange system suitable for whole package utilization of echelon batteries Download PDF

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Publication number
CN113054266A
CN113054266A CN202110258211.5A CN202110258211A CN113054266A CN 113054266 A CN113054266 A CN 113054266A CN 202110258211 A CN202110258211 A CN 202110258211A CN 113054266 A CN113054266 A CN 113054266A
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module
data exchange
exchange unit
echelon
echelon battery
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赵金程
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Weilai Automobile Technology Anhui Co Ltd
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Weilai Automobile Technology Anhui Co Ltd
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Priority to CN202110258211.5A priority Critical patent/CN113054266A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computing Systems (AREA)
  • Medical Informatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Security & Cryptography (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The invention belongs to the technical field of power batteries, and particularly provides a data exchange unit and a data exchange system suitable for the whole package utilization of a echelon battery. For this purpose, the data exchange unit is connected with the electric equipment through the first communication module and the first IO interface module based on the first communication protocol, is connected with the echelon battery through the second communication module and the second IO interface module based on the second communication protocol, completes the analysis of the communication protocol and the realization of the control time sequence, does not need to change the inherent communication protocol and the control time sequence of the electric equipment and the echelon battery, does not need to carry out additional complex compatibility adjustment or reconstruction design, reduces the complexity of the utilization of the echelon battery, and can be applied to more scenes. And the third communication module is connected with the cloud server, so that real-time networking of the data exchange unit is realized, the full life cycle data of the battery is collected, the traceability of the full data of the battery is met, and the cloud system can predict the health state of the battery on line.

Description

Data exchange unit and data exchange system suitable for whole package utilization of echelon batteries
Technical Field
The invention belongs to the technical field of power batteries, and particularly relates to a data exchange unit and a data exchange system suitable for whole package utilization of a echelon battery.
Background
The popularization of new energy automobiles is encouraged by the country on a large scale, so that the new energy automobile industry develops vigorously, but as time goes on, the power batteries of the new energy automobiles face the problem of battery capacity attenuation, the attenuated batteries are no longer suitable for the original power and endurance requirements, retirement needs to be executed, and how to process the retired batteries is a great challenge. Although the retired batteries are not suitable for the original scene, the retired batteries still have a certain residual value, and in order to respond to green economy and energy saving calls, the retired batteries need to be degraded and applied to suitable places, for example, the retired batteries are used as power batteries of vehicles in commercial new energy automobiles such as logistics distribution with lower requirements on endurance and power, or used as energy storage power sources applied to micro-grid systems, communication base stations and the like.
The echelon utilization of the battery can be generally divided into disassembly and recombination utilization and whole package utilization, and the disassembly and recombination utilization usually requires additional resource investment such as equipment, time and the like; the whole package utilization is to detect the whole package of the retired battery under the condition of not unpacking, and according to the detection result, the whole package of the battery which meets the use condition is directly applied to a new application scene, so that the method is a recycling mode with higher cost performance. However, the whole pack of echelon batteries is slightly insufficient in flexibility, and the main technical problem is the compatibility between the echelon batteries and electric equipment in aspects of hardware size, information interaction, operation time sequence and the like.
Accordingly, there is a need in the art for a new solution to the above-mentioned problems.
Disclosure of Invention
In order to solve the above problems in the prior art, i.e. to solve the compatibility problem in the entire battery pack in the echelon in the prior art, the present invention provides in a first aspect a data exchange unit suitable for the entire battery pack in the echelon, comprising:
a control module;
the control module is communicated with a main control module of the electric equipment through the first communication module based on a first communication protocol;
the control module is communicated with a BMS of the echelon battery through the second communication module based on a second communication protocol, wherein the echelon battery is a qualified echelon battery screened by a whole packet;
wherein the first communication protocol is different from the second communication protocol.
In an embodiment of the above data exchange unit suitable for entire echelon battery pack utilization, the data exchange unit further includes a third communication module, and the control module communicates with the cloud server through the third communication module.
In an embodiment of the above data exchange unit suitable for use in a full pack of echelon batteries, the data exchange unit further includes a first IO interface module, and the control module performs information interaction with the main control module of the electric device through the first IO interface module.
In an embodiment of the above data exchange unit suitable for use in a whole echelon battery pack, the data exchange unit further includes a second IO interface module, and the control module performs information interaction with the BMS of the echelon battery through the second IO interface module.
In an embodiment of the above data exchange unit adapted for entire package utilization of echelon batteries, the data exchange unit further includes a power management module, connected to the BMS of the echelon battery, for controlling power supply of the echelon battery BMS; and an independent starting power supply is arranged on the data exchange unit or the electric equipment, and the starting power supply is connected with the power management module so as to supply power to the data exchange unit and the BMS of the echelon battery before the echelon battery starts to supply power.
In an embodiment of the above data exchange unit adapted for echelon battery pack utilization, the first communication module is a CAN module, an RS485 module, a LAN module, or a Wi-Fi module; and/or the second communication module is a CAN module or an RS485 module or a LAN module or a Wi-Fi module.
In an embodiment of the above data exchange unit suitable for echelon battery whole package utilization, the electrical device is a new energy commercial vehicle, the main control module is a VCU of the new energy commercial vehicle, the first communication module is a CAN module, and the second communication module is a CAN module.
In one embodiment of the above data exchange unit adapted for echelon battery pack utilization, the control module is an MCU.
In one embodiment of the above data exchange unit adapted for echelon battery pack utilization, the third communication module is a 4G or 5G module.
In one embodiment of the above data exchange unit adapted for use in a echelon battery pack, the consumer is a communication base station or a machine room device or an emergency lighting device or a microgrid system.
The invention provides a data exchange system suitable for the whole package utilization of a echelon battery in another aspect, which is characterized by comprising the echelon battery, electric equipment and a data exchange unit respectively connected with the echelon battery and the electric equipment;
the data exchange unit includes:
a control module;
the control module is communicated with a main control module of the electric equipment through the first communication module based on a first communication protocol;
the control module is communicated with the BMS of the echelon battery through the second communication module based on a second communication protocol, wherein the echelon battery is a qualified echelon battery screened by a whole packet;
wherein the first communication protocol is different from the second communication protocol.
In an embodiment of the above data exchange system suitable for the entire echelon battery pack, the data exchange system further includes a cloud server, the data exchange unit further includes a third communication module, and the control module communicates with the cloud server through the third communication module.
In an embodiment of the above data exchange system suitable for the entire echelon battery pack, the data exchange unit further includes a first IO interface module, and the control module performs information interaction with the main control module of the electric device through the first IO interface module.
In an embodiment of the above data exchange system suitable for entire echelon battery pack utilization, the data exchange unit further includes a second IO interface module, and the control module performs information interaction with the BMS of the echelon battery through the second IO interface module.
In an embodiment of the above data exchange system suitable for entire package utilization of echelon batteries, the data exchange unit further includes a power management module, connected to the BMS of the echelon battery, for controlling power supply of the echelon battery BMS; and an independent starting power supply is arranged on the data exchange unit or the electric equipment, and the starting power supply is connected with the power management module so as to supply power to the data exchange unit and the BMS of the echelon battery before the echelon battery starts to supply power.
In an embodiment of the above data exchange system adapted for echelon battery whole-packet utilization, the first communication module is a CAN module, or an RS485 module, or a LAN module, or a Wi-Fi module; and/or the second communication module is a CAN module or an RS485 module or a LAN module or a Wi-Fi module.
In an embodiment of the above data exchange system suitable for echelon battery whole package utilization, the electrical device is a new energy commercial vehicle, the main control module is a VCU of the new energy commercial vehicle, the first communication module is a CAN module, and the second communication module is also a CAN module.
In one embodiment of the above data exchange system adapted for echelon battery pack utilization, the control module is an MCU.
In one embodiment of the data exchange system adapted for echelon battery full packet utilization, the third communication module is a 4G or 5G module.
In one embodiment of the above data exchange system suitable for the entire package utilization of the echelon battery, the electric equipment is a communication base station or a machine room equipment or an emergency lighting equipment or a micro-grid system.
As can be understood by those skilled in the art, the data exchange unit of the present invention is connected to the electric equipment through the first communication module and the first IO interface module; the echelon battery is connected through the second communication module and the second IO interface module; the inherent communication protocol and control time sequence of the electric equipment and the echelon battery are not required to be changed, so that the whole echelon battery pack can have good compatibility when being used, can be suitable for more scenes, does not need to carry out complex compatibility adjustment or reconstruction design, and reduces the complexity of echelon battery utilization. And the third communication module is connected with the cloud server, so that real-time networking of the data exchange unit is realized, the full life cycle data of the battery is collected, the traceability of the full data of the battery is met, and the cloud system can predict the health state of the battery on line.
Drawings
Embodiments of the invention are described below with reference to the accompanying drawings in conjunction with a commercial new energy automobile, in which:
fig. 1 is a schematic diagram of the configuration of a data exchange unit suitable for use in a battery pack-by-pack echelon utilization according to the present invention.
Fig. 2 is a schematic diagram of the components of the data exchange system suitable for the gradient battery pack utilization of the invention.
Fig. 3 is a flow chart of the power-on process of the echelon battery of the commercial new energy automobile.
Fig. 4 is a flowchart illustrating normal use of the echelon battery of the commercial new energy automobile according to the present invention.
Fig. 5 is a power-off flow chart of the echelon battery of the commercial new energy automobile.
Fig. 6 is a schematic diagram of the power auto-switching module of fig. 2.
List of reference numerals:
1. a data exchange unit; 10. a control module; 11. a first communication module; 12. a second communication module; 13. a third communication module; 14. a first IO interface module; 15. a second IO interface module; 16. a power management module;
2. a commercial new energy automobile; 21. a VCU;
3. a echelon battery; 31. a BMS;
4. a cloud server;
5. starting a power supply;
6. a power supply automatic switching module; 61. a first power supply; 62. a second power supply; 63. a third power supply;
7. a relay; 71. a normally open contact; 72. a normally closed contact; 73. a common terminal; 74. a relay coil.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings in conjunction with a commercial new energy automobile. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.
For example, although described herein in connection with a commercial new energy automobile, the scope of the present invention is obviously not limited to the commercial new energy automobile, and those skilled in the art may apply the present invention to other electric devices, such as a communication base station, a machine room device, an emergency lighting device, a micro-grid system, etc., as needed.
In addition, in the description of the present application, the term "a and/or B" denotes all possible combinations of a and B, such as a alone, B alone or a and B.
Referring first to fig. 1, fig. 1 is a schematic diagram of a data exchange unit suitable for use in a battery pack-to-pack cascading manner according to the present invention. The Data Exchange Unit (DEU) 1 includes: the system comprises a control module 10, a first communication module 11, a second communication module 12, a third communication module 13, a first IO interface module 14, a second IO interface module 15 and a power management module 16.
Referring next to fig. 2 and with continued reference to fig. 1, the Control module 10 controls the first communication module 11 to operate, and the first communication module 11 communicates with a main Control module of the electric device, that is, a VCU (Vehicle Control Unit) 21 of the commercial new energy Vehicle 2, based on a first communication protocol.
As an optional implementation manner, the first communication module 11 may select an interface form such as a CAN module, an RS485 module, a LAN module, or a Wi-Fi module according to an interface form of the electrical equipment main control module. Preferably, the first communication protocol follows an inherent communication protocol of the powered device master control module. Thus, the DEU1 of the present invention is directly compatible with the powered device without changing its inherent communication protocol and control timing.
With continued reference to fig. 1 and 2, the control module 10 controls the operation of the second communication module 12, and the second communication module 12 communicates with the BMS31 of the echelon battery 3 based on the second communication protocol.
As an alternative embodiment, the second communication module 12 may select an interface form such as a CAN module, an RS485 module, a LAN module, or a Wi-Fi module according to an interface form of the battery BMS using the echelon. Preferably, the second communication protocol follows an inherent communication protocol of the stepped battery BMS. Likewise, with this arrangement, the DEU1 of the present invention can be directly compatible with a stepped battery BMS without changing its inherent communication protocol and control timing.
In the embodiment of the invention, the echelon battery is a qualified echelon battery screened by a whole pack. As an example, the entire packet filtering criteria for a echelon battery may be in accordance with a battery State Of Health parameter SOH value (State Of Health). For example, when the electric device is the commercial new energy vehicle 2 shown in fig. 2, the requirement on the echelon battery is high, and at this time, the whole package screening qualified standard may be determined as that the SOH value of the battery health state parameter is greater than or equal to 80%; when the electric equipment is a communication base station or a micro-grid system and the like, the requirement on the battery in the echelon is general, and the qualified standard of the whole package screening can be determined to be that the SOH value of the battery health state parameter is larger than or equal to 70%.
It should be noted that although several examples of battery full pack screening in steps are illustrated herein. However, it will be understood by those skilled in the art that these examples should not be construed as limiting the scope of the present invention in any way. Without changing the basic principle of the present invention, those skilled in the art can formulate the corresponding step battery whole pack screening standard according to other parameters of the battery.
With continued reference to fig. 1 and 2, the control module 10 performs information interaction with the VCU21 of the commercial new energy vehicle 2 through the first IO interface module 14. The control module 10 outputs a control signal and/or a working state indicating signal to the VCU21 of the commercial new energy vehicle 2 through the first IO interface module 14; the control module 10 obtains the operation state of the commercial new energy vehicle 2 through the first IO interface module 14.
With continued reference to fig. 1 and 2, the control module 10 interacts with the BMS31 of the echelon battery 3 through the second IO interface module 15. The control module 10 outputs a control signal and/or a working state indicating signal to the BMS31 of the echelon battery 3 through the second IO interface module 15; the control module 10 obtains the operation state of the echelon battery 3 through the second IO interface module 15.
With reference to fig. 1 and fig. 2, the control module 10 is connected to the cloud server 4 through the third communication module 13, and can upload related data such as the operating status of the commercial new energy vehicle 2 and/or the echelon battery 3 to the cloud server 4.
As an optional implementation manner, the third communication module 13 may be a 4G or 5G communication module, and performs data communication with the cloud server 4 through a telecommunication network.
With continued reference to fig. 1 and 2, the control module 10 controls the power supply of the echelon battery BMS31 according to an instruction of the commercial new energy vehicle 2 or by automatically determining the power supply condition of the commercial new energy vehicle 2 by controlling the power management module 16.
Specifically, the control module 10 may analyze the first communication protocol, obtain a control instruction of the commercial new energy vehicle 2 according to the protocol content, and complete control of relevant operations such as power-on, power-consumption, power-off and the like of the echelon battery 3 through the second communication protocol and the second IO interface module 15.
More specifically, the control module 10 may analyze the second communication protocol, acquire data of the echelon battery 3, and upload the data of the echelon battery 3 to the commercial new energy vehicle 2 through the first communication protocol, so as to provide information support for controlling the commercial new energy vehicle 2.
As an alternative embodiment, the control module 10 may be an MCU, and the MCU may be at least one of an 8-bit, 16-bit or 32-bit microprocessor. For example, the MCU may be selected from the S32K chip series from Enzhipu corporation, which is a 32-bit Arm Cortex car MCU.
Referring next to fig. 2 in isolation, fig. 2 is a schematic diagram of a data exchange system suitable for use in a cascading battery pack utilization. The system comprises an echelon battery 3, electric equipment 2, a data exchange unit 1 and a cloud server 4.
Specifically, in the present embodiment, the electric device is a commercial new energy automobile 2; the main control module of the electric equipment is VCU21 of the commercial new energy automobile 2; the first communication module 11 is a CAN module, hereinafter referred to as CAN module 11; the second communication module 12 is a CAN module, hereinafter referred to as CAN module 12. Specifically, the DEU1 performs information interaction with the VCU21 of the commercial new energy vehicle 2 through the CAN module 11 and/or the first IO interface module 14, and performs information interaction with the BMS31 of the echelon battery 3 through the CAN module 12 and/or the second IO interface module 15.
In addition, the DEU1 performs information interaction with the cloud server 4 through a third communication module by means of a 4G or 5G network. The DEU1 can be with the information of echelon battery 3 to send the high in the clouds, realize the full life cycle monitoring of echelon battery 3 to and the full amount of echelon battery 3 operation information traces to the source.
Further, the starter power supply 5 supplies power to the DEU1, the VCU21 of the commercial new energy vehicle 2, and the BMS31 of the echelon battery 3, and is normally supplied with power from the starter power supply 5 only when the power supply of the echelon battery 3 needs to be started. For example, in a commercial new energy automobile, the starting power supply 5 is usually an on-board 12V lead-acid maintenance-free battery, and when the automobile is started, the lead-acid maintenance-free battery supplies power to the DEU1, the VCU21 of the commercial new energy automobile 2, and the BMS31 of the echelon battery 3; when the echelon battery 3 is started to supply power to the commercial new energy automobile 2, the power supply mode is automatically switched to the mode that the echelon battery 3 supplies power to the whole automobile.
In a preferred embodiment, as shown in FIG. 2, when the starting power supply 5 is energized, it directly powers the DEU1 and the VCU21 of the commercial new energy vehicle 2 (shown as the third power supply 63 in FIG. 2). The interior of the power management module 16 is provided with a switch, and the DEU1 switches on the internal switch in the power management module 16 to supply power (shown as a power supply 64 in fig. 2) to the BMS31 of the echelon battery 3 according to a command of the VCU21 of the commercial new energy automobile 2.
With respect to the startup power supply 5, it should be noted that it is typically provided in the form of a stand-alone power supply to directly power the VCU21 and DEU1 at an initial stage to enable subsequent commands to be issued and transmitted. Furthermore, although it is described herein as a vehicle-mounted lead-acid maintenance-free battery of the commercial new energy vehicle 2, this is merely an example, and those skilled in the art may arrange it at other locations without departing from the technical principle of the present invention, for example, the starting power source may be arranged on the DEU1, or at other locations on the electric equipment, or even separately from the electric equipment and the DEU1, as long as it can supply power to the main control module of the electric equipment and the DEU1 when the system is started at the beginning.
Referring to fig. 3 and continuing to refer to fig. 2, the working flow of the data exchange system for entire package utilization of the echelon battery of the present invention will be described by taking the power-on, normal use, and power-off of the echelon battery 3 of the commercial new energy vehicle 2 as an example. As shown in fig. 3, the power-on process of the echelon battery of the commercial new energy automobile includes the following steps:
step S301: a power supply 5 (a vehicle-mounted 12V lead-acid maintenance-free battery) is started to supply power to the VCU21 and the DEU1, and the VCU21 and the DEU1 start to work;
step S302: the DEU1 performs data interaction with the VCU21 through the CAN module 11, and obtains a power-on command of the BMS31 by analyzing a first communication protocol or detecting the first IO module 14;
step S303: the DEU1 controls the power management module 16 to switch on the internal switch, provides the power supply 64 for the BMS31, and wakes up the BMS31 through the second IO interface module 15;
step S304: the DEU1 exchanges data with the BMS31 through the CAN module 12, analyzes a second communication protocol to obtain the data of the echelon battery 3 and judges the state of the echelon battery 3;
step S305: according to the second communication protocol, the DEU1 sends a power-on command of the echelon battery 3 to the BMS31 through the CAN module 12;
step S306: the BMS31 closes the internal high voltage relay upon a power-up command from the DEU1, and the DEU1 detects the power-up status feedback given by the BMS31 through the CAN module 12 or the second IO interface module 15.
By this time, the echelon battery 3 completes the power-up process, and the power sources of the DEU1, the VCU21, and the BMS31 will also be automatically switched to the echelon battery 3.
With respect to power switching of the DEU1, VCU21, and BMS31, referring collectively to fig. 2 and 6, the first power supply 61 is from the echelon battery 3, the second power supply 62 is from the start power supply 5, the first power supply 61 and the second power supply 62 are inputs to the automatic power switching module 6, and the third power supply 63 is an output of the automatic power switching module 6, supplies power to the DEU1 and VCU21, and serves as an input to the power management module 16. The power automatic switching module 6 can automatically select the first power source 61 or the second power source 62 as the power supply of the DEU1 and the VCU21 according to the power supply conditions of the first power source 61 and the second power source 62.
With reference to fig. 2 in addition to fig. 6, the power supply of the commercial new energy automobile 2 when the battery 3 is powered on is illustrated by using the relay 7 as an example of the automatic control device. The first power source 61 is connected with the normally open contact 71 of the relay 7, the second power source 62 is connected with the normally closed contact 72 of the relay 7, the third power source 63 is connected with the common end 73 of the relay 7, and the relay coil 74 is connected with the first power source 61. When the commercial new energy automobile 2 is just powered on, the echelon battery 3 is not started, the first power supply 61 has no voltage, the second power supply 62 from the starting power supply 5 has no voltage, and since the first power supply 61 has no voltage and no voltage exists across the relay coil 74, the normally closed contact 72 and the common terminal 73 of the relay 7 are in a conducting state, that is, the starting power supply 5 supplies power to the VCU21 and the DEU 1. When the echelon battery 3 is electrified, the first power source 61 is electrified, the two ends of the relay coil 74 are simultaneously electrified, the second power source 62 is also electrified, the relay 7 is controlled by the first power source 61 to act at the moment, the normally open contact 71 and the common end 73 of the relay 7 are connected, the input of the third power source 63 is converted into the first power source 61 from the second power source 62, namely, after the echelon battery 3 is electrified, the power sources of the DEU1, the VCU21 and the BMS31 are switched to the echelon battery 3.
It should be noted that although the above describes the automatic switching of the power supply by means of a relay, the skilled person will understand that these examples should not constitute any limitation to the scope of the invention. On the premise of not changing the basic principle of the invention, a person skilled in the art can make adjustments to the implementation method of the power automatic switching module according to the specific type of the electric equipment. For example, in the case of technical implementation, a MOS transistor mode, a contactor mode, or other technical solutions may be adopted so as to adapt to the application scenario of a specific electric device.
Regarding the relationship between the first IO interface module 14 and the CAN module 11, it should be noted that the first IO interface module 14 is provided as a necessary supplement for the CAN module 11, and when certain data CAN be transmitted through the first IO interface module 14 or the CAN module 11, one of the data CAN be arbitrarily selected for use; also, some critical data is sometimes transmitted through both modules at the same time, with double validation to ensure the correctness of the data, such as a command to disconnect the battery voltage from some model VCU 21. For example, the power-on command in step S302 may be transmitted through the first IO interface module 14 or the CAN module 11, and accordingly, one or two of the commands may be selected to be transmitted according to the power-on timing requirement of the VCU 21. The relationship between the CAN module 12 and the second IO interface module 15 is similar to the relationship between the CAN module 11 and the first IO interface module 14, and the details are not repeated here.
In addition, in step S304, the operation of determining the status of the echelon battery 3 may be performed by the VCU21, the DEU1, or the cloud server 4. Therefore, although such a determination is made by DEU1 as described above, it should not be construed as limiting the scope of the invention in any way.
Referring next to fig. 4, the normal usage process of the echelon battery of the commercial new energy automobile includes the following steps:
step S401: the DEU1 carries out data communication with the BMS31 through the CAN module 12 according to a second communication protocol to obtain real-time operation data of the echelon battery 3;
step S402: the DEU1 is in data communication with the VCU21 through the CAN module 11 according to a first communication protocol, and provides real-time operation data of the echelon battery 3 to the VCU 21;
step S403: the DEU1 performs data communication with the cloud server 4 through the third communication module 13(4G or 5G module), and provides real-time operation data of the echelon battery 3 to the cloud server 4.
Meanwhile, the DEU1 communicates with the VCU21 in real time, receiving and executing other instructions.
Referring next to fig. 5, the lower current path of the echelon battery of the commercial new energy automobile includes the following steps:
step S501: the VCU21 sends a power-down command to the DEU1 through the CAN module 11 according to a first communication protocol;
step S502: the DEU1 sends a power-off command to the BMS31 through the CAN module 12 according to the second communication protocol;
step S503: the BMS31 turns off the internal high voltage relay according to the power down command from the DEU 1;
step S504: the DEU1 detects power-down state feedback of the BMS31 through the CAN module 12 or the second IO interface module 15;
step S505: the power supplies of the DEU1, the VCU21 and the BMS31 are automatically switched to a starting power supply 5, namely a vehicle-mounted 12V lead-acid maintenance-free battery, by the echelon battery 3;
step S506: the DEU1 makes the BMS31 exit the wake mode through the CAN module 12 or the second IO interface module 15;
step S507: the DEU1 controls the power management module 16 to open the internal switches, powering down the power supply 64 of the BMS 31.
At this point, the echelon battery 3 completes the power-down process.
Step S505, referring to fig. 2 and fig. 6, after the echelon battery 3 is powered down, the first power supply 61 and the relay coil 74 are powered down simultaneously, the normally open contact 71 and the common terminal 73 of the relay 7 are disconnected, the normally closed contact 72 and the common terminal 73 of the relay 7 are connected, and the third power supply 63 is powered by the second power supply 62 from the starting power supply 5 instead.
As mentioned above, the start-up power supply 5 may be a standard part of the consumer. For example, when the electric equipment is a commercial new energy automobile, the independent power supply is usually an on-vehicle 12V lead-acid maintenance-free battery. Alternatively, the starting power supply 5 may also be provided together with the data exchange unit. For example, in a microgrid system, a echelon battery is often used as a backup power source for the system, and the microgrid system is not equipped with a low-voltage dc energy storage battery. When the main power supply of the microgrid system is powered off, a special independent power supply needs to be arranged on the data exchange unit in order to ensure that the data exchange unit and the BMS of the echelon battery can be started normally. The purpose of the automatic power switching is that when the power supply of the electric equipment is normal, the power supply of the BMS of the data exchange unit and the echelon battery is from the working power supply of the electric equipment, and the starting power supply is disconnected, so that the consumption of the starting power supply can be reduced, and the service life of the starting power supply can be prolonged.
It should be noted that, although the specific workflow of the data exchange system for utilizing the entire package of several echelon batteries is illustrated by taking the power-on, use and power-off of the echelon battery of the commercial new energy automobile as an example, those skilled in the art can understand that these examples should not limit the scope of the present invention in any way. The detailed steps in the power-up procedure, the usage procedure and the power-down procedure can be modified by those skilled in the art according to the specific type of the electric device without changing the basic principle of the present invention. For example, where the technology is technically feasible, the content and/or the operation sequence of some steps may be adjusted, or some steps may be combined or deleted, so as to adapt to the application scenario of a specific electric device.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. A data switching unit adapted for use in a echelon battery pack, the data switching unit comprising:
a control module;
the control module is communicated with a main control module of the electric equipment through the first communication module based on a first communication protocol;
the control module is communicated with a BMS of the echelon battery through the second communication module based on a second communication protocol, wherein the echelon battery is a qualified echelon battery screened by a whole packet;
wherein the first communication protocol is different from the second communication protocol.
2. The data exchange unit suitable for echelon battery full pack utilization as claimed in claim 1, wherein the data exchange unit further comprises a third communication module, and the control module communicates with a cloud server through the third communication module.
3. The data exchange unit suitable for echelon battery full pack utilization according to claim 1, wherein the data exchange unit further comprises a first IO interface module, and the control module performs information interaction with a main control module of the electric device through the first IO interface module.
4. The data exchange unit suitable for the entire echelon battery pack utilization as claimed in claim 1, wherein the data exchange unit further comprises a second IO interface module, and the control module performs information interaction with the BMS of the echelon battery through the second IO interface module.
5. The data exchange unit suitable for the whole package utilization of the echelon batteries as claimed in claim 1, further comprising a power management module connected to the BMS of the echelon batteries for controlling the power supply of the BMS of the echelon batteries; and an independent starting power supply is arranged on the data exchange unit or the electric equipment, and the starting power supply is connected with the power management module so as to supply power to the data exchange unit and the BMS of the echelon battery before the echelon battery starts to supply power.
6. The data exchange unit suitable for echelon battery full pack utilization according to any one of claims 1 to 5, wherein the first communication module is a CAN module or an RS485 module or a LAN module or a Wi-Fi module; and/or the second communication module is a CAN module or an RS485 module or a LAN module or a Wi-Fi module.
7. The data exchange unit suitable for echelon battery full package utilization as claimed in claim 6, wherein the electric device is a new energy commercial vehicle, the main control module is a VCU of the new energy commercial vehicle, the first communication module is a CAN module, and the second communication module is also a CAN module.
8. The data exchange unit adapted for echelon battery whole packet utilization as recited in claim 6, wherein the control module is an MCU.
9. The data exchange unit adapted for echelon battery full packet utilization as recited in claim 2, wherein the third communication module is a 4G or 5G module.
10. The data exchange unit suitable for echelon battery full pack utilization as claimed in claim 1, wherein the powered device is a communication base station or a machine room device or an emergency lighting device or a microgrid system.
CN202110258211.5A 2021-03-09 2021-03-09 Data exchange unit and data exchange system suitable for whole package utilization of echelon batteries Pending CN113054266A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023206481A1 (en) * 2022-04-29 2023-11-02 时代电服科技有限公司 Communication method and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023206481A1 (en) * 2022-04-29 2023-11-02 时代电服科技有限公司 Communication method and apparatus

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