CN112428879A - Battery pack and battery management control system with same - Google Patents

Battery pack and battery management control system with same Download PDF

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Publication number
CN112428879A
CN112428879A CN202011411574.XA CN202011411574A CN112428879A CN 112428879 A CN112428879 A CN 112428879A CN 202011411574 A CN202011411574 A CN 202011411574A CN 112428879 A CN112428879 A CN 112428879A
Authority
CN
China
Prior art keywords
battery
battery pack
parameter acquisition
wireless communication
control system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011411574.XA
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Chinese (zh)
Inventor
胡太强
传国强
王阳
陈爽
唐军
陈卫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Ganeng Electric Vehicle Technology Co ltd
Original Assignee
Chongqing Ganeng Electric Vehicle Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Ganeng Electric Vehicle Technology Co ltd filed Critical Chongqing Ganeng Electric Vehicle Technology Co ltd
Priority to CN202011411574.XA priority Critical patent/CN112428879A/en
Publication of CN112428879A publication Critical patent/CN112428879A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention provides a battery management control system, which is applied to a new energy automobile; the battery management control system comprises an on-board device, a plurality of battery packs and a main controller. The main controller is arranged outside the battery packs and is in wireless communication with the battery packs. The main controller is used for receiving and monitoring battery parameters provided by the battery pack. The battery pack is in wireless communication with the main controller, so that battery parameters collected in the battery pack are sent to the main controller through wireless communication. Each battery pack comprises a plurality of battery packs, a plurality of parameter acquisition modules and a slave controller. Each parameter acquisition module corresponds to one battery pack and is used for acquiring battery parameters of the corresponding battery pack. The slave controller is in ad hoc network communication with the parameter acquisition modules and is used for receiving the battery parameters acquired by the parameter acquisition modules.

Description

Battery pack and battery management control system with same
Technical Field
The invention relates to a battery management control system, in particular to a battery management control system in the field of new energy.
Background
The electric automobile replaces oil with electricity, can realize zero emission and low noise, and is an important means for solving the problems of energy and environment. Along with the improvement of the cruising ability of a new energy vehicle, the electric automobile is favored by more users with the advantage of excellent environmental protection performance. A rechargeable battery pack in an electric vehicle is generally electrically connected to a power supply and other vehicle-mounted devices in the electric vehicle through a Controller Area Network (CAN) bus. Meanwhile, the battery pack is internally provided with a master controller and a slave controller which are connected through wires. The slave controller is used for collecting battery parameters, and the master controller is used for receiving the collected battery parameters and sending the battery parameters to the cloud server. When the battery needs to be replaced, the current battery pack needs to be disassembled from the wired connection with the vehicle, and the new battery pack is connected with the electric automobile in a wired manner. In the battery replacing process, a plurality of circuits are needed, and the operation is complex and time-consuming.
Disclosure of Invention
In view of the above, it is desirable to provide a battery pack and a battery management control system, which are used to solve the problem of complicated operation and time consumption of the wired battery pack in the prior art.
A battery pack is in wireless communication with a main controller, so that battery parameters collected in the battery pack are sent to the main controller through wireless communication; the battery pack includes:
a plurality of battery packs;
the plurality of parameter acquisition modules correspond to one battery pack and are used for acquiring battery parameters of the corresponding battery pack; and
and the slave controller is in ad-hoc network communication with the plurality of parameter acquisition modules and is used for receiving the battery parameters acquired by the plurality of parameter acquisition modules.
A battery management control system is applied to a new energy automobile; the battery management control system includes:
an in-vehicle device;
the battery pack is used for providing power for the vehicle-mounted device and collecting battery parameters; and
the main controller is arranged outside the battery packs and is in wireless communication with the battery packs; the main controller is used for receiving and monitoring the battery parameters provided by the battery pack;
the battery pack comprises a plurality of battery packs, a plurality of parameter acquisition modules and a slave controller; each parameter acquisition module corresponds to one battery pack and is used for acquiring battery parameters of the corresponding battery pack; the slave controller establishes ad-hoc network communication with the plurality of parameter acquisition modules and is used for receiving the battery parameters acquired by the plurality of parameter acquisition modules.
According to the battery pack and the battery management control system, in the battery pack, the transmission of battery parameters is realized in a wireless ad hoc network communication mode between the parameter acquisition module and the slave controller, and the element connection mode in the battery pack can be simplified. Due to the fact that the number of the connecting wires in the battery pack is reduced, the weight of the battery pack is light, and the load of a new energy automobile can be reduced.
Drawings
Fig. 1 is a block diagram of a vehicle battery swap management system according to a preferred embodiment of the invention.
Fig. 2 is a schematic block diagram of the battery module and the parameter acquisition module in fig. 1.
Description of the main elements
Battery management control system 1
Server 2
Battery pack 10
Main controller 20
Vehicle-mounted device 30
Battery module 11
Parameter acquisition module 13
From controller 15
NFC identifier 17
NFC read-write module 21
Battery pack 112
Battery 1120
Parameter acquisition unit 132
Detection line 1321
Wireless communication unit 134
Power supply unit 136
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be connected directly or indirectly through intervening elements, or may be connected through inter-element communication or may be in the interaction of two elements. To those of ordinary skill in the art, the above terms may be immediately defined in the present invention according to their specific meanings.
The terms "first", "second", and "third", etc. in the description of the present invention and the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The following describes a specific embodiment of the battery management control system 1 according to the present invention with reference to the drawings.
Please refer to fig. 1, which is a block diagram of a battery management control system 1 according to a preferred embodiment of the present invention. The battery management control system 1 is applied to a new energy automobile (not shown). In at least one embodiment of the invention, the new energy automobile may be a pure electric automobile or a hybrid electric automobile.
The battery management control system 1 can communicate wirelessly with the server 2. The battery management control system 1 is used for detecting battery parameters of the battery pack 10 and transmitting the battery parameters to the server 2 through wireless communication, so as to realize remote monitoring of battery performance. The battery management control system 1 includes a battery pack 10, a main controller 20, and an in-vehicle device 30.
The battery pack 10 is used to supply power to the in-vehicle device 30 and to supply battery parameters of an internal battery to the main controller 20. The battery pack 10 includes a battery module 11, a plurality of parameter acquisition modules 13, a slave controller 15, and an NFC tag 17.
The battery module 11 includes a plurality of battery packs 112. A plurality of the battery packs 112 are connected in parallel. Each of the battery packs 112 is formed by connecting a plurality of cells 1120 in series. In at least one embodiment of the present invention, the number of the batteries 1120 in different battery packs 112 may be the same or different.
Please refer to fig. 2, which is a block diagram of the battery pack 112 and the corresponding parameter collecting module 13. Each of the parameter acquisition modules 13 corresponds to one of the battery packs 112. Each of the parameter collecting modules 13 is configured to collect a battery parameter of the corresponding battery pack 112. The parameter acquisition module 13 includes a parameter acquisition unit 132, a wireless communication unit 134, and a power supply unit 136. The parameter collecting unit 132 is electrically connected to at least one of the batteries 1120 in the battery pack 112 through a detection line 1321 to monitor the voltage and temperature in the battery pack 112. In at least one embodiment of the present invention, the parameter collecting unit 132 may be electrically connected to a part of the batteries 1120 in the battery pack 112. The parameter acquiring unit 132 may take an average value of the acquired temperature of each battery 1120 as the temperature parameter of the battery pack 112, or may take the highest temperature of the temperatures of the plurality of batteries 1120 as the temperature parameter of the battery pack 112. Meanwhile, the parameter acquiring unit 132 may calculate an average value of the acquired voltages of each of the batteries 1120 and multiply the number of the batteries 1120 as a voltage parameter, or may calculate a lowest voltage among the voltages of the plurality of batteries 1120 as an average voltage and multiply the number of the batteries 1120 as a voltage parameter. In other embodiments, the parameter collecting unit 132 may be electrically connected to all the batteries 1120 in the battery pack 112. In this connection, the parameter collecting unit 132 counts the sum of the voltages of the batteries 1120 as a voltage parameter. The battery parameters may include cell temperature and cell voltage. The parameter acquisition unit 132 may further include a temperature sensor for sensing the temperature of the battery 1120 electrically connected thereto. The wireless communication unit 134 performs wireless communication with the slave controller 15. In at least one embodiment of the present invention, the wireless communication unit 134 is a zigbee module. The power supply unit 136 converts the voltage of the battery pack 112 into an operating voltage and supplies it to the wireless communication unit 134.
The slave controller 15 receives the battery parameters provided by each of the parameter acquisition modules 13. The slave controller 15 further transmits the received battery parameters to the master controller 20 through 433MHz frequency hopping. The slave controller 15 has a unique identity code.
The NFC tag 17 is disposed on the outer surface of the battery pack 10, and has a mapping relationship with the id code of the slave controller 15. The NFC tag 17 is used to identify the identity information of the battery pack 10 so as to distinguish the battery pack from other battery packs 10. In at least one embodiment of the present invention, each battery pack 10 has a unique NFC identification 17.
The main controller 20 is disposed outside the battery pack 10, and is disposed in the new energy vehicle independently from the battery pack 10. The main controller 20 stores therein an identification table. The identification table records the corresponding relationship between different NFC identifications and the corresponding id codes of the slave controller 15. The host device 20 includes an NFC read-write module 21. The NFC read-write module 21 is configured to identify the NFC identifier 17 on the battery pack 10, and establish a mapping relationship between the received battery parameter and the NFC identifier 17. When the NFC read-write module 21 recognizes the NFC identifier 17 on the battery pack 10, the host controller 20 further establishes a wireless communication connection with the slave controller 15 corresponding to the NFC identifier 17. The main controller 20 further establishes wired communication with the in-vehicle apparatus 30 by wired means. In at least one embodiment of the present invention, the main Controller 20 establishes wired communication with the in-vehicle device 30 through a Controller Area Network (CAN) bus.
In the battery management control system 1, in the battery pack 10, the parameter acquisition module 13 and the slave controller 15 establish an ad hoc network communication mode to realize transmission of battery parameters, so that a connection mode of elements in the battery pack 10 can be simplified. Outside the battery pack 10, the transmission of battery parameters is realized between the slave controller 15 and the master controller 20 through a 433MHz frequency hopping technology, no wire plugging and unplugging action is required in the battery swapping process, and the complexity of the battery swapping operation can be reduced. In addition, since the number of connection lines in the battery pack 10 is reduced, the battery pack 10 is light in weight, and the load of the new energy automobile can be reduced.
It will be appreciated by those skilled in the art that the above embodiments are illustrative only and not intended to be limiting, and that suitable modifications and variations may be made to the above embodiments without departing from the true spirit and scope of the invention.

Claims (10)

1. A battery pack is in wireless communication with a main controller, so that battery parameters collected in the battery pack are sent to the main controller through wireless communication; characterized in that, the battery package includes:
a plurality of battery packs;
the plurality of parameter acquisition modules correspond to one battery pack and are used for acquiring battery parameters of the corresponding battery pack; and
and the slave controller is in ad-hoc network communication with the plurality of parameter acquisition modules and is used for receiving the battery parameters acquired by the plurality of parameter acquisition modules.
2. The battery pack of claim 1, wherein the parameter acquisition module comprises a parameter acquisition unit and a wireless communication unit; the parameter acquisition unit is electrically connected with the battery pack through a detection line, and the wireless communication unit is electrically connected with the parameter acquisition unit and is in wireless communication connection with the slave controller.
3. The battery pack of claim 2, wherein the wireless communication unit is a zigbee module.
4. The battery pack of claim 1, wherein the battery pack further has an NFC identification; the main controller is also provided with an NFC read-write module; and when the NFC read-write module identifies the NFC identifier, the master controller establishes wireless communication between the master controllers corresponding to the NFC identifier.
5. The battery pack of claim 1, wherein the battery pack and the master controller communicate via 433MHz frequency hopping communication technology.
6. A battery management control system is applied to a new energy automobile; the method is characterized in that: the battery management control system includes:
an in-vehicle device;
the battery pack is used for providing power for the vehicle-mounted device and collecting battery parameters; and
the main controller is arranged outside the battery packs and is in wireless communication with the battery packs; the main controller is used for receiving and monitoring the battery parameters provided by the battery pack;
the battery pack comprises a plurality of battery packs, a plurality of parameter acquisition modules and a slave controller; each parameter acquisition module corresponds to one battery pack and is used for acquiring battery parameters of the corresponding battery pack; the slave controller establishes ad-hoc network communication with the plurality of parameter acquisition modules and is used for receiving the battery parameters acquired by the plurality of parameter acquisition modules.
7. The battery management control system of claim 6, wherein the parameter acquisition module comprises a parameter acquisition unit and a wireless communication unit; the parameter acquisition unit is electrically connected with the battery pack through a detection line, and the wireless communication unit is electrically connected with the parameter acquisition unit and is in wireless communication connection with the slave controller.
8. The battery management control system of claim 7, wherein the wireless communication unit is a zigbee module.
9. The battery management control system of claim 6, wherein the battery pack further has an NFC identification; the main controller is also provided with an NFC read-write module; and when the NFC read-write module identifies the NFC identifier, the master controller establishes wireless communication between the master controllers corresponding to the NFC identifier.
10. The battery management control system of claim 6, wherein the battery pack and the master controller communicate via 433MHz frequency hopping communications technology.
CN202011411574.XA 2020-12-03 2020-12-03 Battery pack and battery management control system with same Pending CN112428879A (en)

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Application Number Priority Date Filing Date Title
CN202011411574.XA CN112428879A (en) 2020-12-03 2020-12-03 Battery pack and battery management control system with same

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Application publication date: 20210302