CN115610356A - Battery management controller and communication method for battery management controller - Google Patents
Battery management controller and communication method for battery management controller Download PDFInfo
- Publication number
- CN115610356A CN115610356A CN202211129461.XA CN202211129461A CN115610356A CN 115610356 A CN115610356 A CN 115610356A CN 202211129461 A CN202211129461 A CN 202211129461A CN 115610356 A CN115610356 A CN 115610356A
- Authority
- CN
- China
- Prior art keywords
- domain controller
- daisy chain
- board
- sampling
- voltage
- 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
Links
- 238000004891 communication Methods 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000005070 sampling Methods 0.000 claims abstract description 184
- 230000002457 bidirectional effect Effects 0.000 claims description 14
- 241000723353 Chrysanthemum Species 0.000 claims description 11
- 235000005633 Chrysanthemum balsamita Nutrition 0.000 claims description 11
- 238000001514 detection method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 241000404134 Leucanthemella serotina Species 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
-
- 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
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
-
- 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
- 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
Abstract
The invention provides a battery management controller and a communication method for the battery management controller. The communication method comprises the following steps: the high voltage board communicates with the domain controller through a first daisy chain; the sampling board is communicated with the domain controller through a second daisy chain; the high-voltage relay is communicated with the domain controller in a PIN mode; wherein the first daisy chain and the second daisy chain are independent of each other, and a command signal for controlling the sampling board is directly transmitted from the domain controller; the command signal for controlling the high-pressure plate is directly sent by the domain controller; and a driving instruction for controlling the high-voltage relay is directly sent by the domain controller.
Description
Technical Field
The invention relates to battery management, in particular to a method for improving communication reliability of a battery management controller.
Background
With the continuous upgrade of the electronic and electrical architecture of the automobile, the architecture of the central computing controller and the domain controller becomes more and more mature, at present, many host plants begin to design their own domain controllers, reduce the number of other controllers, and transfer a large number of functions to the domain controllers.
Although the scheme can be used when the daisy chain load is not high or the communication rate requirement is not high, once the communication input rate requirement is high and the transmission data is large, the update frequency of the daisy chain cannot meet the requirement, especially the current 800 v battery pack system is applied more and more, the number of generally required single chips reaches more than 15, if the high-voltage board is connected in series, and some functions with higher sampling rate requirement, such as the acquisition of a shunt, on the high-voltage board greatly affect the communication rate, so that the design requirement cannot be met.
In addition, if the daisy chain fails, for example, a certain daisy chain is broken, although a certain reliability is ensured by the bidirectional daisy chain, during the process of the broken line, the daisy chain needs to be reset or readdressed, the daisy chain needs to be interrupted for a period of time, and the time will also affect the whole loop, resulting in sampling or voltage and current detection abnormity.
Therefore, a method for improving the communication reliability of the battery management controller is needed.
Disclosure of Invention
In order to solve the problems of unreliable communication and low communication frequency of the high-voltage board and the sampling board, the invention provides a communication method for a battery management controller, which can greatly improve the reliability, robustness and anti-interference performance of communication among the high-voltage board, the sampling board and a domain controller, can support higher daisy chain communication rate, obtain better high-voltage sampling and current detection performance, and avoid the problem of communication failure caused by too high daisy chain load.
The communication method for the battery management controller includes, but is not limited to, the following steps:
the high voltage board communicates with the domain controller through a first daisy chain;
the sampling board is communicated with the domain controller through a second daisy chain; and
the high-voltage relay is communicated with the domain controller in a PIN mode;
wherein the first daisy chain is independent of the second daisy chain; the command signal for controlling the sampling board is directly sent by the domain controller; the command signal for controlling the high-pressure plate is directly sent by the domain controller; and a driving instruction for controlling the high-voltage relay is directly sent by the domain controller.
In one embodiment, the step of the high voltage board communicating with the domain controller through the first daisy chain comprises: the high voltage board communicates with a first bridge chip within the domain controller through a first daisy chain.
In one embodiment, the first and second daisy chains are bidirectional daisy chains.
In one embodiment, the first bridge chip parses the signal sent by the high voltage board through the first daisy chain and sends the signal to a processor in the domain controller, and the first bridge chip receives a command signal of the processor and sends the command signal to the high voltage board through the first daisy chain.
In one embodiment, the step of the sampling board communicating with the domain controller through a second daisy chain comprises: the sampling board communicates with a second bridge chip within the domain controller via a second daisy chain.
In one embodiment, the second bridge chip parses the daisy-chain signal from the sampling board and sends it to a processor in the domain controller, and the second bridge chip receives a command signal from the processor and sends it to the sampling board.
In one embodiment, the sampling units in the sampling plate are connected through a daisy chain, and the first sampling unit and the last sampling unit are connected with the second bridge chip through the daisy chain.
In one embodiment, when the high pressure plate fails to communicate with the domain controller, the communication of the sampling plate with the domain controller is not affected; when the communication between the sampling board and the domain controller fails, the communication between the sampling board and the domain controller is not affected.
The invention also provides a communication method for the battery management controller, which comprises the following steps:
the high voltage board communicates with the domain controller through a first daisy chain;
the sampling board is communicated with the domain controller through a second daisy chain; and
the high-voltage relay is communicated with the high-voltage board in a PIN mode;
wherein the first daisy chain is independent of the second daisy chain; the command signal for controlling the sampling board is directly sent by the domain controller; the command signal for controlling the high-pressure plate is directly sent by the domain controller; and a driving instruction for controlling the high-voltage relay is sent to the high-voltage plate by the domain controller through the first daisy chain and is sent to the high-voltage relay by the high-voltage plate in a PIN mode.
In one embodiment, the step of the high voltage board communicating with the domain controller through the first daisy chain comprises: the high voltage board communicates with a first bridge chip within the domain controller through a first daisy chain.
In one embodiment, the first daisy chain is a bidirectional daisy chain.
In one embodiment, the first bridge chip parses the signal sent by the high voltage board through the first daisy chain and sends the signal to a processor in the domain controller, and the first bridge chip receives a command signal of the processor and sends the command signal to the high voltage board through the first daisy chain.
In one embodiment, the step of the sampling board communicating with the domain controller through a second daisy chain comprises: the sampling board communicates with a second bridge chip within the domain controller via a second daisy chain.
In one embodiment, the second bridge chip parses the daisy chain signal from the sampling board and sends it to a processor in the domain controller, and the second bridge chip receives a command signal from the processor and sends it to the sampling board.
In one embodiment, the sampling units in the sampling plate are connected through a daisy chain, and the first sampling unit and the last sampling unit are connected with the second bridge chip through the daisy chain.
In one embodiment, when the high pressure plate fails to communicate with the domain controller, the communication of the sampling plate with the domain controller is not affected; when the communication between the sampling board and the domain controller fails, the communication between the sampling board and the domain controller is not affected.
The present invention also provides a battery management controller, comprising: a domain controller located within a battery pack, a high voltage board located within the battery pack, in communication with the domain controller via a first daisy chain; a sampling board located within the battery pack in communication with the domain controller via a second daisy chain; the high-voltage relay is positioned in the battery pack and is connected with the domain controller through PIN or connected with the high-voltage board through PIN; wherein the first daisy chain and the second daisy chain are independent of each other; the command signal for controlling the sampling plate is directly sent by the domain controller; the command signal for controlling the high-pressure plate is directly sent by the domain controller; when the high-voltage relay is connected with the domain controller through the PIN, a driving instruction for controlling the high-voltage relay is directly sent by the domain controller; when the high-voltage relay is connected with the high-voltage plate through the PIN, a driving instruction for controlling the high-voltage relay is sent to the high-voltage plate by the domain controller through the first daisy chain and is sent to the high-voltage relay by the high-voltage plate in a PIN mode.
In one embodiment, the domain controller includes: the system comprises a first bridging chip, a second bridging chip and a processor; the first bridging chip analyzes the signal sent by the high-voltage board through the first daisy chain and sends the signal to a processor in the domain controller, and the first bridging chip receives an instruction signal of the processor and sends the instruction signal to the high-voltage board through the first daisy chain; the second bridge chip analyzes the daisy chain signal from the sampling board and sends the daisy chain signal to a processor in the domain controller, and the second bridge chip receives an instruction signal of the processor and sends the instruction signal to the sampling board.
In one embodiment, the sampling units in the sampling plate are connected through a daisy chain, and the first sampling unit and the last sampling unit are connected through the daisy chain and the second bridge chip. The first and second daisy chains are bidirectional daisy chains.
In one embodiment, when the high pressure plate fails to communicate with the domain controller, communication of the sampling plate with the domain controller is not affected; when the communication between the sampling board and the domain controller fails, the communication between the sampling board and the domain controller is not affected.
The battery management controller system can ensure the reliability of communication between the high-voltage board, the sampling board and the domain controller through the bidirectional daisy chain, and meanwhile, the high-voltage board and the sampling board use two sets of daisy chain network communication without influencing each other. Because the system resets the daisy chain when the daisy chain receives interference, all daisy chain nodes are interfered and can not communicate during the reset process, if two daisy chain networks are adopted, if one of the daisy chain nodes is interfered, the other daisy chain node can still normally communicate, and thus the robustness of the system is improved.
In addition, because the daisy chain load is reduced, higher frequency is allowed to carry out communication, better high-voltage sampling and current detection performance is obtained, and the problem of communication failure caused by too high daisy chain load is avoided. For example, if all chips are connected into a ring, the highest update rate is not lower than 100ms, and the high-voltage board is communicated with the domain controller by using a daisy chain ring alone, the communication rate can reach 10ms or even higher, which is beneficial to improving the current detection performance of the system.
Drawings
The foregoing summary, as well as the following detailed description of the invention, will be better understood when read in conjunction with the appended drawings. It is to be noted that the appended drawings are intended as examples of the claimed invention. In the drawings, like reference characters designate the same or similar elements.
FIG. 1 illustrates a battery management controller architecture according to an embodiment of the present invention;
FIG. 2 illustrates a battery management controller architecture according to yet another embodiment of the present invention;
FIG. 3 illustrates a schematic diagram of the connection between a domain controller and a high voltage board and a sampling board according to an embodiment of the present invention;
fig. 4 illustrates an operation of a battery management controller according to an embodiment of the present invention.
Detailed Description
The detailed features and advantages of the invention are described in detail in the detailed description which follows, and will be readily apparent to those skilled in the art from the description, claims and drawings.
In order to solve the technical problems of unreliable communication and low communication frequency of a high-voltage board and a sampling board, the invention provides a battery management controller architecture and a method for improving the communication reliability of the battery management controller.
Fig. 1 illustrates a battery management controller architecture according to an embodiment of the present invention. The battery management controller comprises a domain controller 101 positioned outside a battery pack, n battery modules 105-1 \8230, 105-n positioned inside the battery pack, a high-voltage relay 102, a high-voltage board 103 and a sampling board 104.
The domain controller 101 is a controller that collects and sends commands, and communicates with the high voltage board 103 and the sampling board 104 through a bridge chip on the domain controller, and the domain controller can analyze daisy-chain signals from the high voltage board 103 and the sampling board 104, and at the same time, can send control commands to the high voltage board 103 and the sampling board 104 through the bridge chip.
The high-voltage board 103 is used for high-voltage detection, current detection, and insulation detection of the battery pack. The current detection can be obtained by sampling a current divider, and the current divider needs high-frequency sampling to ensure the update rate of signals. The insulation detection is realized by sending an instruction to the high-voltage board 103 through the domain controller.
Further, the sampling board 104 includes a plurality of sampling units (i.e., sampling chips), each of which samples and equalizes a cell with a respective associated battery module (i.e., cell). The sampling comprises voltage sampling and temperature sampling of the battery module.
The communication mode in the battery management controller is as follows:
the domain controller 101 and the high voltage board 103 are individually connected through a first daisy chain.
The domain controller 101 and the sample board 104 are separately connected by a second daisy chain.
Wherein the first daisy chain is independent of the second daisy chain.
The domain controller 101 is connected to the high-voltage relay 102 by PIN communication. Specifically, the domain controller 101 sends a relay drive signal to control the operation of the high-voltage relay 102 through the wire harness.
In another embodiment, in order to minimize the number of harnesses connecting the battery pack to the outside, the present invention further provides another battery management controller architecture, as shown in fig. 2.
Fig. 2 illustrates a battery management controller architecture according to yet another embodiment of the present invention. The battery management controller comprises a domain controller 201 located outside a battery pack, n battery modules 205-1 \8230, 205-n located inside the battery pack, a high-voltage relay 202, a high-voltage board 203 and a sampling board 204.
The domain controller 201 is a controller for collecting and sending commands, and the domain controller 201 can analyze daisy-chain signals from the high-voltage board 203 and the sampling board 204 through a bridge chip on the domain controller and communicate with the high-voltage board 203 and the sampling board 204, and meanwhile, can send control commands to the high-voltage board 203 and the sampling board 204 through the bridge chip.
The high-voltage board 203 is used for high-voltage detection, current detection, and insulation detection of the battery pack. The current detection can be obtained by sampling the current divider, and the current divider needs high-frequency sampling to ensure the update rate of the signal. And the insulation detection is realized by sending an instruction to the high-voltage board through the domain controller.
Sampling board 204 is used for sampling electric core voltage and battery module temperature, balances electric core simultaneously.
Further, the sampling board 204 includes a plurality of sampling units (i.e., sampling chips), each sampling unit sampling and equalizing the cells of the associated battery module (i.e., cell). The sampling comprises voltage sampling and temperature sampling of the battery module.
The communication mode in the battery management controller is as follows:
the domain controller 201 and the high voltage board 203 are individually connected through a first daisy chain.
The domain controller 201 and the sample board 204 are separately connected by a second daisy chain.
Wherein the first daisy chain is independent of the second daisy chain.
The embodiment shown in fig. 2 differs from the embodiment shown in fig. 1 in the communication connection and the high-voltage relay drive. In the embodiment shown in fig. 2, the high voltage relay 202 is connected to the high voltage board 203 by PIN communication. The domain controller 201 sends a relay driving instruction to the high-voltage board 203 through the first daisy chain, and controls a driving chip on the high-voltage board 203 to send the driving instruction to the high-voltage relay, so that the high-voltage relay works as required.
Fig. 3 is a schematic diagram illustrating a connection manner between a domain controller and a high voltage board and a sampling board according to an embodiment of the present invention.
The domain controller 301 includes a first bridge chip 311, a second bridge chip 312, and a processor 313. The high-voltage board 303 communicates with the first bridge chip 311 of the domain controller 301 through the first daisy chain, and the first bridge chip 311 is connected to and communicates with the processor 313 within the domain controller 301. The processor 313 of the domain controller 301 sends control commands to the first bridge chip 311, and the first bridge chip 311 sends the control commands to the high-voltage board 303 through the first daisy chain. The first bridge chip 311 receives signals from the high voltage board through the first daisy chain and sends the signals to the processor 313.
The sampling units are daisy-chained, the first sampling unit and the last sampling unit are daisy-chained to a second bridge chip 312, and the second bridge chip 312 is connected to and communicates with the processor of the domain controller 301.
It is noted that the first daisy chain and the second daisy chain are bidirectional daisy chains. The purpose of the bidirectional daisy chain is to allow communication in different directions when a line is broken, maintaining normal communication between the domain controller and the high voltage board or the sampling board. For example, when the connection of the wire harness (i.e., the wire harness is daisy-chained) between the domain controller and the high voltage board in fig. 3 is normal, the communication is performed using the default daisy-chained direction communication, i.e., the upper daisy-chained wire harness between the domain controller and the high voltage board, and this case is called forward daisy-chained communication. When the daisy chain wire is broken, the daisy chain communication between the domain controller and the high voltage board must go to the following daisy chain wire communication, so that the direction of communication is opposite to the previous one, which can be called reverse daisy chain communication. For another example, when the wire harness connection between the domain controller and the sampling board in fig. 3 is normal, the default daisy chain direction communication is used, that is, the domain controller-the sampling board 1-the sampling board 2-the sampling board 3-the sampling board 4-the domain controller direction communication, and at this time, the default daisy chain direction communication may be called forward daisy chain communication; when the wiring harness between the domain controller and the sampling board is broken, or the wiring harness between the sampling unit and the sampling unit is broken, for example, the wiring harness between the sampling board 1 and the sampling board 2 is broken, the domain controller and the sampling board 1 still have the default forward daisy chain communication direction, and the sampling board 2 and the domain controller adopt the reverse daisy chain communication, that is, the domain controller, the sampling board 4, the sampling board 3 and the sampling board 2.
Fig. 4 illustrates an operation of a battery management controller according to an embodiment of the present invention.
Step 401: after the domain controller is powered on, the domain controller is initialized.
Step 402: and awakening the high-voltage board through the daisy chain, and initializing the high-voltage board.
Step 403: the sampling board is awakened through the daisy chain, and the sampling board is initialized.
Step 404: judging whether the initialization of the high-voltage plate fails, if so, continuing to try the initialization (namely awakening) of the high-voltage plate, but not influencing the work of the sampling plate; if not, the high voltage board communicates with the domain controller via the daisy chain.
Step 405: judging whether the initialization of the sampling plate fails, if so, continuing to try the initialization of the sampling plate (namely awakening), but not influencing the work of the high-pressure plate; if not, the sampling board communicates with the domain controller via the daisy chain.
The invention provides a communication method for a battery management controller. The communication method includes but is not limited to the following steps:
the high voltage board communicates with the domain controller through a first daisy chain;
the sampling board communicates with the domain controller through a second daisy chain; and
the high-voltage relay is communicated with the domain controller in a PIN mode;
wherein the first daisy chain and the second daisy chain are independent of each other, and a command signal for controlling the sampling board is directly transmitted from the domain controller; the command signal for controlling the high-pressure plate is directly sent by the domain controller; and a driving instruction for controlling the high-voltage relay is directly sent by the domain controller.
In one embodiment, the step of the high voltage board communicating with the domain controller through the first daisy chain comprises: the high voltage board communicates with a first bridge chip within the domain controller through a first daisy chain.
In one embodiment, the first daisy chain and the second daisy chain are bidirectional daisy chains.
In one embodiment, the first bridge chip parses signals sent by the high voltage board through the first daisy chain and sends the signals to a processor in the domain controller, and the first bridge chip receives command signals of the processor and sends the command signals to the high voltage board through the first daisy chain.
In one embodiment, the step of the sampling board communicating with the domain controller through a second daisy chain comprises: the sampling board communicates with a second bridge chip within the domain controller via a second daisy chain.
In one embodiment, the second bridge chip parses the daisy chain signal from the sampling board and sends it to a processor in the domain controller, and the second bridge chip receives a command signal from the processor and sends it to the sampling board.
In one embodiment, the sampling units in the sampling plate are connected through a daisy chain, and the first sampling unit and the last sampling unit are connected through the daisy chain and the second bridge chip.
In one embodiment, when the high pressure plate fails to communicate with the domain controller, communication of the sampling plate with the domain controller is not affected; when the communication between the sampling board and the domain controller fails, the communication between the sampling board and the domain controller is not affected.
The invention also provides a communication method for the battery management controller, which comprises the following steps:
the high voltage board communicates with the domain controller through a first daisy chain;
the sampling board is communicated with the domain controller through a second daisy chain; and
the high-voltage relay is communicated with the high-voltage board in a PIN mode;
wherein the first daisy chain and the second daisy chain are independent of each other, and command signals for controlling the sampling boards are directly transmitted by the domain controller; the command signal for controlling the high-pressure plate is directly sent by the domain controller; and a driving instruction for controlling the high-voltage relay is sent to the high-voltage plate by the domain controller through the first daisy chain and is sent to the high-voltage relay by the high-voltage plate in a PIN mode.
In one embodiment, the step of the high voltage board communicating with the domain controller through the first daisy chain comprises: the high voltage board communicates with a first bridge chip within the domain controller through a first daisy chain.
In one embodiment, the first daisy chain and the second daisy chain are bidirectional daisy chains.
In one embodiment, the first bridge chip parses signals sent by the high voltage board through the first daisy chain and sends the signals to a processor in the domain controller, and the first bridge chip receives command signals of the processor and sends the command signals to the high voltage board through the first daisy chain.
In one embodiment, the step of the sampling board communicating with the domain controller through a second daisy chain comprises: the sampling board communicates with a second bridge chip within the domain controller via a second daisy chain.
In one embodiment, the second bridge chip parses the daisy-chain signal from the sampling board and sends it to a processor in the domain controller, and the second bridge chip receives a command signal from the processor and sends it to the sampling board.
In one embodiment, the sampling units in the sampling plate are connected through a daisy chain, and the first sampling unit and the last sampling unit are connected through the daisy chain and the second bridge chip.
In one embodiment, when the high pressure plate fails to communicate with the domain controller, communication of the sampling plate with the domain controller is not affected; when the communication between the sampling board and the domain controller fails, the communication between the sampling board and the domain controller is not affected.
The present invention also provides a battery management controller, comprising: a domain controller, a high voltage board located within the battery pack, in communication with the domain controller through a first daisy chain; a sampling board located within the battery pack in communication with the domain controller via a second daisy chain; the high-voltage relay is positioned in the battery pack and is connected with the domain controller through PIN or connected with the high-voltage board through PIN; wherein the first daisy chain and the second daisy chain are independent of each other, and a command signal for controlling the sampling board is directly transmitted from the domain controller; the command signal for controlling the high-pressure plate is directly sent by the domain controller; when the high-voltage relay is connected with the domain controller through the PIN, a driving instruction for controlling the high-voltage relay is directly sent by the domain controller; when the high-voltage relay is connected with the high-voltage plate through the PIN, a driving instruction for controlling the high-voltage relay is sent to the high-voltage plate through the domain controller through the first daisy chain and is sent to the high-voltage relay through the PIN by the high-voltage plate.
In one embodiment, the domain controller includes: the system comprises a first bridging chip, a second bridging chip and a processor; the first bridging chip analyzes the signal sent by the high-voltage board through the first daisy chain and sends the signal to a processor in the domain controller, and the first bridging chip receives an instruction signal of the processor and sends the instruction signal to the high-voltage board through the first daisy chain; the second bridge chip analyzes the daisy chain signal from the sampling board and sends the daisy chain signal to a processor in the domain controller, and the second bridge chip receives an instruction signal of the processor and sends the instruction signal to the sampling board.
In one embodiment, each sampling unit in the sampling plate is connected with each other through a daisy chain, the first sampling unit and the last sampling unit are connected with each other through the daisy chain and the second bridge chip, and each sampling unit samples the associated battery module in the battery pack.
In one embodiment, the first daisy chain and the second daisy chain are bidirectional daisy chains.
In one embodiment, when the high pressure plate fails to communicate with the domain controller, the communication of the sampling plate with the domain controller is not affected; when the communication between the sampling board and the domain controller fails, the communication between the sampling board and the domain controller is not affected.
The battery management controller system can ensure the reliability of communication between the high-voltage board, the sampling board and the domain controller through the bidirectional daisy chain, and meanwhile, the high-voltage board and the sampling board use two sets of daisy chain network communication without influencing each other. Because the system resets the daisy chain when the daisy chain receives interference, all daisy chain nodes are interfered and can not communicate during the reset process, if two daisy chain networks are adopted, if one of the daisy chain nodes is interfered, the other daisy chain node can still normally communicate, and thus the robustness of the system is improved.
In addition, because the daisy chain load is reduced, higher frequency is allowed to carry out communication, better high-voltage sampling and current detection performance is obtained, and the problem of communication failure caused by too high daisy chain load is avoided. For example, if all chips are connected into a ring, the highest update rate is not less than 100ms, and the high-voltage board is communicated with the domain controller by using a daisy chain ring alone, the communication rate can reach 10ms or even higher, which is beneficial to improving the current detection performance of the system.
Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing disclosure is by way of example only, and is not intended to limit the present application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.
Flow charts are used herein to illustrate operations performed by systems according to embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, various steps may be processed in reverse order or simultaneously. Meanwhile, other operations are added to or removed from these processes.
Also, this application uses specific language to describe embodiments of the application. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means a feature, structure, or characteristic described in connection with at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.
Moreover, those skilled in the art will appreciate that aspects of the present application may be illustrated and described in terms of several patentable species or situations, including any new and useful combination of processes, machines, manufacture, or materials, or any new and useful improvement thereon. Accordingly, various aspects of the present application may be embodied entirely in hardware, entirely in software (including firmware, resident software, micro-code, etc.) or in a combination of hardware and software. The above hardware or software may be referred to as "data block," module, "" engine, "" unit, "" component, "or" system. Furthermore, aspects of the present application may be represented as a computer product, including computer readable program code, in one or more computer readable media.
Additionally, the order in which elements and sequences of the processes described herein are processed, the use of alphanumeric characters, or the use of other designations, is not intended to limit the order of the processes and methods described herein, unless explicitly claimed. While certain presently contemplated useful embodiments of the invention have been discussed in the foregoing disclosure by way of various examples, it is to be understood that such detail is solely for that purpose and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover all modifications and equivalent arrangements that are within the spirit and scope of the embodiments of the disclosure. For example, although the system components described above may be implemented by hardware devices, they may also be implemented by software-only solutions, such as installing the described system on an existing server or mobile device.
Similarly, it should be noted that in the foregoing description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to imply that more features are required than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single disclosed embodiment.
The terms and expressions which have been employed herein are used as terms of description and not of limitation. The use of such terms and expressions is not intended to exclude any equivalents of the features shown and described (or portions thereof), and it is recognized that various modifications may be made within the scope of the claims. Other modifications, variations, and alternatives are also possible. Accordingly, the claims should be looked to in order to cover all such equivalents.
Also, it should be noted that although the present invention has been described with reference to the current specific embodiments, it should be understood by those skilled in the art that the above embodiments are merely illustrative of the present invention, and various equivalent changes or substitutions may be made without departing from the spirit of the present invention, and therefore, it is intended that all changes and modifications to the above embodiments be included within the scope of the claims of the present application.
Claims (20)
1. A communication method for a battery management controller having a high voltage board, a sampling board, a high voltage relay, and a domain controller, the communication method comprising:
the high voltage board is in communication with the domain controller through a first daisy chain;
the sampling board communicates with the domain controller via a second daisy chain; and
the high-voltage relay is communicated with the domain controller in a PIN mode;
wherein the first daisy chain and the second daisy chain are independent of each other; the command signal for controlling the sampling board is directly sent by the domain controller; the command signal for controlling the high-pressure plate is directly sent by the domain controller; and a driving instruction for controlling the high-voltage relay is directly sent by the domain controller.
2. The communication method of claim 1, wherein the step of the high voltage board communicating with the domain controller through the first daisy chain comprises: the high voltage board communicates with a first bridge chip within the domain controller through a first daisy chain.
3. The communication method of claim 1, wherein the first daisy chain and the second daisy chain are bidirectional daisy chains.
4. The communication method according to claim 2, wherein the first bridge chip parses a signal sent from the high voltage board through the first daisy chain and sends the signal to a processor in the domain controller, and the first bridge chip receives a command signal from the processor and sends the signal to the high voltage board through the first daisy chain.
5. The communication method of claim 1, wherein the step of the sampling board communicating with the domain controller via a second daisy chain comprises: the sampling board communicates with a second bridge chip within the domain controller via a second daisy chain.
6. The communication method of claim 5, wherein the second bridge chip parses daisy chain signals from the sample board and sends them to a processor in the domain controller, and the second bridge chip receives command signals from the processor and sends them to the sample board.
7. The communication method according to claim 5, wherein the sampling units in the sampling board are daisy-chained, and the first sampling unit and the last sampling unit are daisy-chained to the second bridge chip.
8. The communication method according to claim 1, wherein when the high pressure board fails to communicate with the domain controller, the communication of the sampling board with the domain controller is not affected; when the communication between the sampling board and the domain controller fails, the communication between the sampling board and the domain controller is not influenced.
9. A communication method for a battery management controller having a high voltage board, a sampling board, a high voltage relay, and a domain controller, the communication method comprising:
the high voltage board is in communication with the domain controller through a first daisy chain;
the sampling board communicates with the domain controller through a second daisy chain; and
the high-voltage relay is communicated with the high-voltage board in a PIN mode;
wherein the first daisy chain is independent of the second daisy chain; the command signal for controlling the sampling board is directly sent by the domain controller; the command signal for controlling the high-pressure plate is directly sent by the domain controller; and a driving instruction for controlling the high-voltage relay is sent to the high-voltage plate by the domain controller through the first daisy chain and is sent to the high-voltage relay by the high-voltage plate in a PIN mode.
10. The communication method of claim 9, wherein the step of the high voltage board communicating with the domain controller through the first daisy chain comprises: the high voltage board communicates with a first bridge chip within the domain controller through a first daisy chain.
11. The communication method of claim 9, wherein the first daisy chain and the second daisy chain are bidirectional daisy chains.
12. The communication method according to claim 10, wherein the first bridge chip parses the signal sent from the high voltage board through the first daisy chain and sends the signal to a processor in the domain controller, and the first bridge chip receives a command signal from the processor and sends the command signal to the high voltage board through the first daisy chain.
13. The communication method of claim 9, wherein the step of the sampling board communicating with the domain controller via a second daisy chain comprises: the sampling board communicates with a second bridge chip within the domain controller via a second daisy chain.
14. The communication method of claim 13, wherein the second bridge chip parses daisy-chain signals from the sampling board and sends them to a processor in the domain controller, and the second bridge chip receives command signals from the processor and sends them to the sampling board.
15. The communication method of claim 13, wherein the sampling units in the sampling board are daisy-chained, and the first sampling unit and the last sampling unit are daisy-chained to the second bridge chip.
16. The communication method of claim 9, wherein when the high pressure plate fails to communicate with the domain controller, the communication of the sampling plate with the domain controller is not affected; when the communication between the sampling board and the domain controller fails, the communication between the sampling board and the domain controller is not affected.
17. A battery management controller, the battery management controller comprising:
a domain controller located outside the battery pack;
a high voltage board located within the battery pack in communication with the domain controller through a first daisy chain;
a sampling board located within the battery pack in communication with the domain controller through a second daisy chain;
the high-voltage relay is positioned in the battery pack and is connected with the domain controller through PIN or connected with the high-voltage board through PIN;
the first daisy chain and the second daisy chain are independent of each other; the command signal for controlling the sampling board is directly sent by the domain controller; the command signal for controlling the high-pressure plate is directly sent by the domain controller; when the high-voltage relay is connected with the domain controller through the PIN, a driving instruction for controlling the high-voltage relay is directly sent by the domain controller; when the high-voltage relay is connected with the high-voltage plate through the PIN, a driving instruction for controlling the high-voltage relay is sent to the high-voltage plate through the domain controller through the first daisy chain and is sent to the high-voltage relay through the PIN by the high-voltage plate.
18. The battery management controller of claim 17, wherein the domain controller comprises: the system comprises a first bridging chip, a second bridging chip and a processor;
the first bridging chip analyzes the signal sent by the high-voltage board through the first daisy chain and sends the signal to a processor in the domain controller, and the first bridging chip receives an instruction signal of the processor and sends the instruction signal to the high-voltage board through the first daisy chain;
the second bridge chip analyzes the daisy chain signal from the sampling board and sends the daisy chain signal to a processor in the domain controller, and the second bridge chip receives an instruction signal of the processor and sends the instruction signal to the sampling board.
19. The battery management controller according to claim 18, wherein each sampling unit in the sampling plate samples an associated battery module in the battery pack, the sampling units are connected in a daisy chain, and a first sampling unit and a last sampling unit are connected in a daisy chain with the second bridge chip; the first daisy chain and the second daisy chain are bidirectional daisy chains.
20. The battery management controller of claim 17, wherein when the high pressure board fails to communicate with the domain controller, the communication of the sampling board with the domain controller is not affected; when the communication between the sampling board and the domain controller fails, the communication between the sampling board and the domain controller is not affected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211129461.XA CN115610356A (en) | 2022-09-16 | 2022-09-16 | Battery management controller and communication method for battery management controller |
| PCT/CN2023/100847 WO2024055659A1 (en) | 2022-09-16 | 2023-06-16 | Battery management controller, and communication method for battery management controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211129461.XA CN115610356A (en) | 2022-09-16 | 2022-09-16 | Battery management controller and communication method for battery management controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115610356A true CN115610356A (en) | 2023-01-17 |
Family
ID=84859093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211129461.XA Pending CN115610356A (en) | 2022-09-16 | 2022-09-16 | Battery management controller and communication method for battery management controller |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115610356A (en) |
| WO (1) | WO2024055659A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116471720A (en) * | 2023-04-23 | 2023-07-21 | 钰泰半导体股份有限公司 | LED driving chip, LED self-adaptive allowance control system and method |
| WO2024055659A1 (en) * | 2022-09-16 | 2024-03-21 | 联合汽车电子有限公司 | Battery management controller, and communication method for battery management controller |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100118228A (en) * | 2009-04-28 | 2010-11-05 | 이승철 | The pannel with the two board choicing one of them in case of out of order |
| CN109031111B (en) * | 2018-08-10 | 2021-01-01 | 宁波吉利汽车研究开发有限公司 | Relay state diagnostic circuit and power supply |
| CN110154826A (en) * | 2019-05-31 | 2019-08-23 | 山东交通学院 | A kind of electric locomotive intelligent accummulator expert management system and method |
| CN114074576A (en) * | 2020-08-21 | 2022-02-22 | 广汽埃安新能源汽车有限公司 | Domain controlled battery management system |
| CN115610356A (en) * | 2022-09-16 | 2023-01-17 | 联合汽车电子有限公司 | Battery management controller and communication method for battery management controller |
-
2022
- 2022-09-16 CN CN202211129461.XA patent/CN115610356A/en active Pending
-
2023
- 2023-06-16 WO PCT/CN2023/100847 patent/WO2024055659A1/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055659A1 (en) * | 2022-09-16 | 2024-03-21 | 联合汽车电子有限公司 | Battery management controller, and communication method for battery management controller |
| CN116471720A (en) * | 2023-04-23 | 2023-07-21 | 钰泰半导体股份有限公司 | LED driving chip, LED self-adaptive allowance control system and method |
| CN116471720B (en) * | 2023-04-23 | 2024-01-02 | 钰泰半导体股份有限公司 | LED driving chip, LED self-adaptive allowance control system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024055659A1 (en) | 2024-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115610356A (en) | Battery management controller and communication method for battery management controller | |
| JP7114753B2 (en) | Multi-module optical fiber laser with real-time monitoring of optical module anomalies | |
| CN101714109A (en) | Method and device for controlling mainboard of double CPU system | |
| CN110427283B (en) | Dual-redundancy fuel management computer system | |
| CN113259209B (en) | Automobile CAN communication fault test system, method and device and storage medium | |
| CN103941625B (en) | Can bus data transmission monitoring system | |
| CN111653234A (en) | Bidirectional transmission device, LED driving device, LED control system and bidirectional transmission method | |
| CN101634853B (en) | Bus-type automobile body control system and method | |
| CN111176939A (en) | Multi-node server management system and method based on CPLD | |
| CN111781915A (en) | Vehicle-mounted multifunctional electronic control platform device | |
| CN108808714B (en) | High-voltage flexible direct-current transmission valve control protection system and protection control method | |
| CN212570351U (en) | Bidirectional transmission device, LED driving device and LED control system | |
| CN217767435U (en) | Profibus bus double-channel redundant communication module | |
| CN116781492A (en) | Communication method, double-servo control system and method, gas turbine and control method | |
| CN115275398A (en) | Battery management controller system | |
| CN209823500U (en) | Case and case panel of direct current transmission valve control system | |
| CN113190184B (en) | Hardware cluster device and storage equipment management method | |
| CN220455708U (en) | Controller circuit structure and control system of accelerator | |
| CN220283215U (en) | Elevator control box overhauls device, elevator control box and elevator | |
| CN112445311B (en) | Multi-control system management board power supply method and device | |
| CN220419954U (en) | Multi-serial-port double-backup data storage processing system | |
| US6922143B2 (en) | Serial bus type configuration recognition and alarm apparatus | |
| CN116471137A (en) | Dual-machine hot standby dual-redundancy network fault monitoring method and system | |
| CN220483131U (en) | Electric bus battery system and electric bus | |
| CN115037190B (en) | Multi-axis servo driving system with power supply monitoring function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |