CN115782677A - New energy electric vehicle battery replacement device and method based on wireless WIFI communication - Google Patents
New energy electric vehicle battery replacement device and method based on wireless WIFI communication Download PDFInfo
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- CN115782677A CN115782677A CN202211498550.1A CN202211498550A CN115782677A CN 115782677 A CN115782677 A CN 115782677A CN 202211498550 A CN202211498550 A CN 202211498550A CN 115782677 A CN115782677 A CN 115782677A
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- 230000003993 interaction Effects 0.000 claims description 8
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- 230000008569 process Effects 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000036541 health Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
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- 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
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- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The invention relates to a new energy electric vehicle battery replacement device and method based on wireless WIFI communication, which consists of a vehicle battery management system and a battery replacement system; the vehicle battery management system comprises a battery management system primary control unit, a whole vehicle control unit communicated with the battery management system primary control unit and an electric box battery management system; the electronic box battery management system comprises a battery management system secondary control unit which is communicated with the battery management system primary control unit; the battery replacement system comprises a battery replacement station management system control unit and a battery replacement station management system; the battery management system primary control unit is in wireless communication with the battery replacement station management system control unit and the electric box battery management system and monitors the data of each battery pack. The BMS adopts a wireless WIFI communication technology to realize the mutual communication among the whole vehicle, the power battery and the battery replacement station; the design distribution of wiring harnesses and plug-in components can be reduced; the sealing performance and the reliability of the power battery are improved; therefore, the health state of the battery can be monitored in real time more conveniently.
Description
Technical Field
The invention belongs to the technical field of battery replacement of new energy electric vehicles, and particularly relates to a battery replacement device and a battery replacement method of a new energy electric vehicle based on a wireless WIFI communication BMS battery management system.
Background
With the rapid development of the new energy electric automobile industry, increasing the endurance mileage becomes a hot spot of current research. At present, the energy supply mode of the electric automobile mainly comprises charging and battery replacement. Compared with a charging mode, the battery replacement mode has the advantages of centralized charging and unified distribution, the charging waiting time of a user is reduced, the cycle life of the battery can be prolonged, the safety of the battery is improved, and the like. However, swapping is also limited, for example, by the maturity, standardization, and profitability of swapping technologies.
Based on this, a new energy electric vehicle battery replacement device and method need to be developed urgently to effectively solve the problems.
Disclosure of Invention
The invention aims to provide a new energy electric vehicle battery replacement device based on wireless WIFI communication and a new energy electric vehicle battery replacement method based on wireless WIFI communication, so as to solve the problem of conveniently monitoring the health state of a battery in real time.
The purpose of the invention is realized by the following technical scheme:
a new energy electric vehicle battery replacement device based on wireless WIFI communication is composed of a vehicle battery management system and a battery replacement system; the vehicle battery management system and the battery replacement system perform data interaction through WIFI;
the vehicle battery management system comprises a battery management system primary control unit, a whole vehicle control unit and an electric box battery management system; the battery management system primary control unit is communicated with the whole vehicle control unit through a CAN bus;
the electric box battery management system comprises a battery management system secondary control unit; the primary control unit of the battery management system is communicated with the secondary control unit of the battery management system through wireless WIFI;
the battery replacement system comprises a battery replacement station management system control unit and a battery replacement station management system; the battery management system primary control unit, the battery replacement station management system control unit and the electric box battery management system are in wireless WIFI communication and monitor the data of each battery pack.
Furthermore, the electric box battery management system also comprises a battery management system acquisition unit, a high-voltage integrated module and a direct-current power converter.
Furthermore, the battery management system acquisition unit is used for sampling cell voltage, module temperature, current and the like.
Furthermore, the direct current power converter is used for converting the voltage and supplying low-voltage power to the secondary control unit and the high-voltage integrated module of the battery management system.
Further, the power swapping station management system is in CAN communication with the TBMU and the CMBU, and controls the charging equipment and the RGV trolley through Ethernet to swap power.
Further, the power exchange system power exchange station management system control unit is in wireless WIFI communication with the battery management system primary control unit in the power exchange process and is in wired communication with the power exchange station management system in the station.
Further, no low voltage wiring harness is required between the battery packs.
Further, the battery swapping system further comprises a plurality of charging cabinets, and the battery swapping station management system is in wired communication with the charging cabinets in the charging process.
A new energy electric vehicle battery replacement method based on wireless WIFI communication comprises the following steps:
A. in the vehicle battery management system, a battery management system acquisition unit in an electric box battery management system samples the voltage, the current and the module temperature of a battery core, converts the voltage through a direct-current power supply converter and supplies power to a secondary control unit of the battery management system and a high-voltage integrated module at low voltage, and the secondary control unit of the battery management system is in wireless WIFI communication with a primary control unit of the battery management system;
B. the battery management system primary control unit samples total current, pack voltage and the like, transmits data to the whole vehicle control unit through a CAN bus, and performs wireless WIFI communication with the battery replacement station management system control unit during battery replacement;
C. after receiving the interactive content of the primary control unit of the battery management system, the control unit of the battery replacement station management system converts the information into Ethernet through the CAN and performs wired communication with the battery replacement station management system, wherein the communication interactive content comprises the state of the whole vehicle, battery pack data, the state, battery replacement request data and the like;
D. the charging station management system controls charging, then the charging station management system converts the charging into CAN through Ethernet and communicates with the charging cabinet, communication interaction content comprises allowable charging instructions, bin position information, battery pack data, charging module state and the like, and then charging is carried out in the charging cabinet by referring to an internal protocol.
Compared with the prior art, the invention has the beneficial effects that:
according to the new energy electric vehicle battery replacement device and method based on wireless WIFI communication, a BMS adopts a wireless WIFI communication technology to realize mutual communication among a whole vehicle, a power battery and a battery replacement station; the design distribution of the wire harness and the plugging component can be reduced; the sealing performance and the reliability of the power battery are improved; therefore, the health state of the battery can be monitored in real time more conveniently.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram of a new energy electric vehicle battery replacement method based on wireless WIFI communication.
Detailed Description
The invention is further illustrated by the following examples:
the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not construed as indicating or implying relative importance.
As shown in fig. 1, the new energy electric vehicle battery replacement device based on wireless WIFI communication of the present invention is composed of a vehicle battery management system and a battery replacement system. And the vehicle battery management system and the battery replacement system perform data interaction through WIFI.
The vehicle battery management system comprises a battery management system primary control unit, a whole vehicle control unit and an electric box battery management system. And the primary control unit of the battery management system is communicated with the whole vehicle control unit through a CAN bus.
The electronic box battery management system is composed of a battery management system secondary control unit, a battery management system acquisition unit, a high-voltage integrated module and a direct-current power supply converter.
The battery replacing system comprises a battery replacing station management system control unit, a battery replacing station management system and a plurality of charging cabinets, so that the communication among the whole vehicle, the power battery and the battery replacing station is realized.
The primary control unit of the battery management system and the secondary control unit of the battery management system are communicated through wireless WIFI, and the wireless WIFI communication method is equivalent to the communication between the original traditional battery management unit and the whole vehicle CAN.
And wireless WIFI data interaction is carried out between the battery management system primary control unit and the battery swapping station management system, and after the battery swapping station management system is ready, the battery swapping station management system controls battery swapping.
Specifically, the battery management system primary control unit, the battery changing station management system control unit and the electric box battery management system perform wireless WIFI communication and monitor each battery pack data, and a low-voltage wire harness is not needed between the battery packs. The power conversion system power conversion station management system control unit is in wireless WIFI communication with the battery management system primary control unit in the power conversion process and is in wired communication with the power conversion station management system in the station.
The battery management system acquisition unit is used for sampling cell voltage, module temperature, current and the like.
The direct-current power converter is used for converting voltage and supplying power to the secondary control unit of the battery management system and the high-voltage integrated module at low voltage.
The power swapping station management system is in CAN communication with the TBMU and the CMBU, and controls the charging equipment and the RGV to swap power through Ethernet.
The charging station management system is in wired communication with the charging cabinet in the charging process.
The invention relates to a new energy electric vehicle battery replacement method based on wireless WIFI communication, which comprises the following steps:
1. in the vehicle battery management system, a battery management system acquisition unit in the electronic box battery management system samples the voltage, the current and the module temperature of a battery core, converts the voltage through a direct-current power supply converter, supplies power to a battery management system secondary control unit and a high-voltage integrated module at low voltage, and performs wireless WIFI communication between the battery management system secondary control unit and a battery management system primary control unit.
2. The battery management system primary control unit samples total current, pack voltage and the like, transmits data to the whole vehicle control unit through the CAN bus, and carries out wireless WIFI communication with the battery replacement station management system control unit when replacing the battery.
3. After receiving the interactive content of the primary control unit of the battery management system, the control unit of the battery replacement station management system converts the information into Ethernet through the CAN and performs wired communication with the battery management system of the battery replacement station, wherein the communication interactive content comprises the state of the whole vehicle, the data of battery pack, the state, the battery replacement request data and the like.
4. The charging station management system controls to charge, then converts the charging into CAN through Ethernet, communicates with the charging cabinet, and performs charging in the charging cabinet by referring to an internal protocol, wherein the communication interaction content comprises a charging permission instruction, bin information, battery pack data, a charging module state and the like.
This kind of realize new forms of energy electric automobile of BMS battery management system of wireless WIFI communication trades electric technology adopts wireless WIFI communication technology, realizes intercommunication between whole car, power battery, the power station that trades. The design distribution of the wiring harness and the plugging component can be reduced; the sealing performance and the reliability of the power battery are improved; therefore, the health state of the battery can be monitored in real time more conveniently.
Example 1
A new energy electric vehicle battery replacement device based on wireless WIFI communication is composed of a vehicle battery management system and a battery replacement system. The vehicle battery management system comprises a battery management system primary control unit, a whole vehicle control unit and an electronic box battery management system. The electronic box battery management system is composed of a battery management system secondary control unit, a battery management system acquisition unit, a high-voltage integrated module and a direct-current power supply converter. The battery replacement system comprises a battery replacement station management system control unit, a battery replacement station management system and 6 charging cabinets.
And the primary control unit of the battery management system is communicated with the whole vehicle control unit through a CAN bus. And the primary control unit of the battery management system is communicated with the secondary control unit of the battery management system through wireless WIFI. The battery management system primary control unit, the battery replacement station management system control unit and the electric box battery management system carry out wireless WIFI communication and monitor the data of each battery pack, and low-voltage wire harnesses are not needed among the battery packs. The power conversion system power conversion station management system control unit is in wireless WIFI communication with the battery management system primary control unit in the power conversion process and is in wired communication with the power conversion station management system in the station. The power swapping station management system is in CAN communication with the TBMU and the CMBU, and controls the charging equipment and the RGV to swap power through Ethernet. The charging station management system is in wired communication with the charging cabinet in the charging process.
The battery management system acquisition unit samples the cell voltage, the module temperature and the current. And the direct-current power supply converter converts the voltage and supplies power to the secondary control unit of the battery management system and the high-voltage integrated module at low voltage.
A new energy electric vehicle battery replacement method based on wireless WIFI communication comprises the following steps:
1. in the vehicle battery management system, a battery management system acquisition unit in the electronic box battery management system samples the voltage, the current and the module temperature of a battery core, converts the voltage through a direct-current power supply converter, supplies power to a battery management system secondary control unit and a high-voltage integrated module at low voltage, and performs wireless WIFI communication between the battery management system secondary control unit and a battery management system primary control unit.
2. The battery management system primary control unit samples total current and Pack voltage, transmits data to the whole vehicle control unit through the CAN bus, and carries out wireless WIFI communication with the battery replacement station management system control unit during battery replacement.
3. After receiving the interactive content of the primary control unit of the battery management system, the control unit of the battery replacement station management system converts the information into the Ethernet through the CAN and performs wired communication with the battery replacement station management system, wherein the communication interactive content comprises the state of the whole vehicle, battery pack data, the state and battery replacement request data.
4. The charging station management system controls to charge, then converts the charging into CAN through Ethernet, communicates with the charging cabinet, and performs charging in the charging cabinet by referring to an internal protocol, wherein the communication interaction content comprises a charging permission instruction, bin information, battery pack data, a charging module state and the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements and substitutions will now be apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. The utility model provides a new forms of energy electric automobile trades electric installation based on wireless WIFI communication which characterized in that: the system consists of a vehicle battery management system and a battery replacement system; the vehicle battery management system and the battery replacement system perform data interaction through WIFI;
the vehicle battery management system comprises a battery management system primary control unit, a whole vehicle control unit and an electric box battery management system; the battery management system primary control unit is communicated with the whole vehicle control unit through a CAN bus;
the electric box battery management system comprises a battery management system secondary control unit; the primary control unit of the battery management system is communicated with the secondary control unit of the battery management system through wireless WIFI;
the battery replacement system comprises a battery replacement station management system control unit and a battery replacement station management system; the battery management system primary control unit, the battery replacement station management system control unit and the electric box battery management system are in wireless WIFI communication and monitor the data of each battery pack.
2. The new energy electric vehicle battery replacement device based on wireless WIFI communication of claim 1, characterized in that: the electric box battery management system further comprises a battery management system acquisition unit, a high-voltage integrated module and a direct-current power supply converter.
3. The new energy electric vehicle battery replacement device based on wireless WIFI communication of claim 2, characterized in that: the battery management system acquisition unit is used for sampling cell voltage, module temperature, current and the like.
4. The new energy electric vehicle battery replacement device based on wireless WIFI communication of claim 2, characterized in that: the direct-current power converter is used for converting voltage and supplying power to the secondary control unit of the battery management system and the high-voltage integrated module at low voltage.
5. The new energy electric vehicle battery replacement device based on wireless WIFI communication of claim 1, characterized in that: the power swapping station management system is in CAN communication with the TBMU and the CMBU, and controls the charging equipment and the RGV to swap power through Ethernet.
6. The new energy electric vehicle battery replacement device based on wireless WIFI communication of claim 1, characterized in that: the power exchange system power exchange station management system control unit is in wireless WIFI communication with the battery management system primary control unit in the power exchange process and is in wired communication with the in-station power exchange station management system.
7. The new energy electric vehicle battery replacement device based on wireless WIFI communication of claim 1, characterized in that: no low voltage wiring harness is required between the battery packs.
8. The new energy electric vehicle battery replacement device based on wireless WIFI communication of claim 1, characterized in that: the battery replacement system further comprises a plurality of charging cabinets, and the battery replacement station management system is in wired communication with the charging cabinets in the charging process.
9. A new energy electric vehicle battery replacement method based on wireless WIFI communication is characterized by comprising the following steps:
A. in a vehicle battery management system, a battery management system acquisition unit in an electric box battery management system samples the voltage, the current and the module temperature of a battery core, converts the voltage through a direct-current power supply converter, and supplies power to a secondary control unit of the battery management system and a high-voltage integrated module at low voltage;
B. the battery management system primary control unit samples total current, pack voltage and the like, transmits data to the whole vehicle control unit through a CAN bus, and performs wireless WIFI communication with the battery replacement station management system control unit during battery replacement;
C. after receiving the interactive content of the primary control unit of the battery management system, the control unit of the battery replacement station management system converts the information into Ethernet through the CAN and performs wired communication with the battery management system of the battery replacement station, wherein the communication interactive content comprises the state of the whole vehicle, the battery pack data, the state, the battery replacement request data and the like;
D. the charging station management system controls to charge, then converts the charging into CAN through Ethernet, communicates with the charging cabinet, and performs charging in the charging cabinet by referring to an internal protocol, wherein the communication interaction content comprises a charging permission instruction, bin information, battery pack data, a charging module state and the like.
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