CN110829516A - Battery management topology framework, battery management method and battery management system - Google Patents
Battery management topology framework, battery management method and battery management system Download PDFInfo
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Abstract
The invention discloses a battery management topological structure, a battery management method and a battery management system, wherein the battery management topological structure comprises a battery management unit, a voltage and current measurement unit, a daisy chain and at least one battery monitoring unit; the battery management unit is connected with the voltage and current measuring unit through a daisy chain, and the battery monitoring unit is connected with the battery management unit or the voltage and current measuring unit. The battery management topological structure provided by the invention is adopted, and the battery management unit, the voltage and current measurement unit and the battery monitoring unit are connected through the daisy chain to form an annular chain type topological structure or a linear topological structure, so that the additional arrangement of electronic components and peripheral circuits is avoided, the product investment cost is reduced, a software system is avoided being developed, the product research and development difficulty coefficient is reduced, and meanwhile, the whole battery management system can still normally communicate when a certain line or node fails.
Description
Technical Field
The invention relates to the field of electronic appliances, and also relates to the technical field of battery management, in particular to a battery management topology framework, a battery management method and a battery management system.
Background
The battery is as the energy carrier of numerous equipment such as electric automobile, storage battery car, robot, unmanned aerial vehicle, because its operating current is big, and the battery module is in relatively confined environment for a long time, produces the high heat easily and leads to battery operational environment temperature to rise, causes battery system's low security and short life.
In order to improve the safety of the battery system and prolong the service life of the battery, the state of the battery needs to be monitored in the using process of the battery. The BMS (Battery Management System) is used as a link between the Battery and the user terminal, and can effectively monitor the Battery state and feed back the monitoring result to the user terminal. The existing battery management master-slave topology architecture is also called as a battery management distributed topology architecture, a battery management Unit and a voltage battery measurement Unit are connected through a CAN (Control Area Network) bus for data transmission, the topology architecture has many disadvantages, when the CAN bus communication architecture is adopted, not only are each Unit required to be additionally provided with a CAN transceiver, an MCU (micro controller Unit) and a peripheral circuit, the number of electronic components is increased, the Area of a printed circuit board is increased, and the design of a product circuit is complicated, so that the increase of production cost, and the time and energy investment of production personnel are caused; and the added CAN transceiver, MCU and peripheral circuit also need to develop corresponding software, which increases the software burning procedure and increases the cost of upgrading service of after-sale software. Most importantly, when a CAN bus communication architecture is adopted, all units are hung under the same CAN bus, and once a certain line or node of the CAN bus fails, all the units fail, so that data transmission and monitoring of a battery system cannot be realized.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a battery management topology architecture, which solves the problems that in the prior art, a CAN bus communication architecture is adopted, not only CAN transceivers, MCUs and peripheral circuits need to be added to each unit, but also corresponding software needs to be added, so that the production cost is increased, and the whole battery monitoring system is broken down due to the fact that a line or a node is easy to fail.
Aiming at the limitation of the prior art, the invention provides a battery management topological structure, which comprises a battery management unit, a voltage and current measurement unit, a daisy chain and at least one battery monitoring unit; the battery management unit is connected with the voltage and current measuring unit through a daisy chain, and the battery monitoring unit is connected with the battery management unit or the voltage and current measuring unit.
Preferably, the number of the battery monitoring units is multiple, the multiple battery monitoring units are sequentially connected through a daisy chain to form a daisy chain, and both ends of the daisy chain are connected with the battery management unit.
Specifically, the battery monitoring units include a battery monitoring unit 1, a battery monitoring unit 2 … battery monitoring unit n; n is an integer greater than or equal to 1, and the battery monitoring units 1 and 2 … are connected in sequence to form a daisy chain. The battery monitoring unit 1 is connected with the battery management unit through a daisy chain, and the battery monitoring unit n is connected with the battery management unit through the daisy chain.
Preferably, the number of the battery monitoring units is multiple, the multiple battery monitoring units are sequentially connected through a daisy chain to form a daisy chain, one end of the daisy chain is connected with the battery management unit, and the other end of the daisy chain is connected with the voltage and current measurement unit.
Specifically, the battery monitoring units include a battery monitoring unit 1, a battery monitoring unit 2 … battery monitoring unit n; n is an integer greater than or equal to 1, and the battery monitoring units 1 and 2 … are connected in sequence to form a daisy chain. The battery monitoring unit 1 is connected with the voltage and current measuring unit through a daisy chain, and the battery monitoring unit n is connected with the voltage and current measuring unit through a daisy chain.
Preferably, the battery monitoring unit is connected with the battery management unit through the daisy chain.
Preferably, the battery monitoring unit is connected with the voltage current measuring unit through the daisy chain.
Preferably, the number of the battery monitoring units is multiple, the multiple battery monitoring units are sequentially connected through a daisy chain to form a daisy chain, and one end of the daisy chain is connected with the battery management unit.
Preferably, the number of the battery monitoring units is multiple, the multiple battery monitoring units are sequentially connected through a daisy chain to form a daisy chain, and one end of the daisy chain is connected with the voltage and current measuring unit.
Correspondingly, the invention also discloses a battery management method, which comprises the following steps:
acquiring a battery state through a voltage and current measuring unit and a battery monitoring unit based on a battery management topological architecture, wherein the battery management topological architecture is any one of the battery management topological architectures; and outputting a battery use instruction and battery state evaluation information according to the battery state.
Specifically, the battery state includes: the battery pack comprises a single battery voltage, a battery temperature, a battery module total voltage, a battery system total voltage and a battery system total current.
Correspondingly, the invention also discloses a battery management system, which comprises:
the battery state information acquisition module is used for acquiring the battery state through the voltage and current measurement unit and the battery monitoring unit;
and the processing module is used for outputting a battery use instruction and battery state evaluation information according to the battery state.
The embodiment of the invention has the following beneficial effects:
according to the battery management topological structure, the battery management method and the battery management system, the battery management unit, the voltage and current measurement unit and the battery monitoring unit are connected through the daisy chain to form the ring-shaped chain type topological structure or the linear topological structure, so that the additional arrangement of electronic components and peripheral circuits is avoided, the product input cost is reduced, a software development system is avoided, the product research and development difficulty coefficient is reduced, and the whole battery management system can still normally communicate when a certain line or node fails.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions and advantages of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a battery management topology according to embodiment 1 of the present invention;
fig. 2 is a schematic diagram of another battery management topology provided in embodiment 2 of the present invention;
fig. 3 is a schematic diagram of another battery management topology provided in embodiment 3 of the present invention;
fig. 4 is a schematic diagram of another battery management topology provided in embodiment 4 of the present invention;
fig. 5 is a schematic diagram of another battery management topology provided in embodiment 3 of the present invention;
fig. 6 is a schematic diagram of another battery management topology provided in embodiment 4 of the present invention;
fig. 7 is a schematic flow chart of a battery management method according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a battery management system according to an embodiment of the present invention.
Wherein the reference numerals are: 100-a battery management unit; 200-a voltage current measuring unit; 300-daisy chain; 400-a battery monitoring unit; 810-a battery state information acquisition module; 820-processing module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It should be apparent that the described embodiment is only one embodiment of the invention, and not all 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.
It should be noted that reference herein to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. In the description of the present invention, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions, such as, for example, inclusion of a list of elements, steps, and modules, not necessarily limited to those elements, steps, and modules explicitly listed, but may include other elements, steps, and modules not explicitly listed or relevant to the architectures, methods, and systems herein.
Example 1
Referring to fig. 1, which is a schematic diagram illustrating a battery management topology architecture provided in embodiment 1 of the present invention, the present specification provides an architecture as illustrated in the schematic diagram, but more or less units may be included based on conventional or non-inventive labor. In practical implementation, the system can be composed according to the architecture shown in the attached drawings. The battery management topology includes a battery management unit 100, a voltage current measurement unit 200, a daisy chain 300, and a plurality of battery monitoring units 400. The battery management unit 100 is connected to the voltage and current measurement unit 200 through a daisy chain 300, the plurality of battery monitoring units 400 are connected to form a daisy chain through the daisy chain 300, and both ends of the daisy chain are connected to the battery management unit 100. The battery monitoring unit 400 includes a battery monitoring unit 1, a battery monitoring unit 2 … battery monitoring unit n; n is an integer greater than or equal to 1, and the battery monitoring units 1 and 2 … are connected in sequence to form a daisy chain. The battery monitoring unit 1 is connected to the battery management unit 100 through a daisy chain 300, and the battery monitoring unit n is connected to the battery management unit 100 through the daisy chain 300.
The number of the battery monitoring units 400 may be adjusted according to an actual application environment, the daisy chain 300 is specifically a daisy chain communication interface circuit, a first daisy chain interface of the battery management unit 100 is connected to a first daisy chain interface of the voltage and current measuring unit 200, a second daisy chain interface of the battery management unit 100 is connected to a first daisy chain interface of the battery monitoring unit 1, a second daisy chain interface of the battery monitoring unit 1 is connected to a first daisy chain interface of the battery monitoring unit 2, and so on among the plurality of battery monitoring units 400.
By adopting the battery management topology framework provided by the embodiment, the daisy chain is used for connecting the battery management unit, the voltage and current measurement unit and the battery monitoring unit to form the ring-shaped chain topology framework, so that the additional arrangement of electronic components and peripheral circuits is avoided, the product input cost is reduced, the development of a software system is avoided, the product research and development difficulty coefficient is reduced, and meanwhile, the whole battery management system can still normally communicate when a certain line or node fails.
Example 2
Referring to fig. 2, which is a schematic diagram illustrating another battery management topology provided in embodiment 2 of the present invention, the present specification provides an architecture as illustrated in the schematic diagram, but more or less units may be included based on conventional or non-inventive labor. In practical implementation, the system can be composed according to the architecture shown in the attached drawings. The battery management topology includes a battery management unit 100, a voltage current measurement unit 200, a daisy chain 300, and a plurality of battery monitoring units 400. The battery management unit 100 is connected to the voltage and current measurement unit 200 through a daisy chain 300, the plurality of battery monitoring units 400 are connected to form a daisy chain through the daisy chain 300, one end of the daisy chain is connected to the battery management unit 100, and the other end of the daisy chain is connected to the voltage and current measurement unit 200. The battery monitoring unit 400 includes a battery monitoring unit 1, a battery monitoring unit 2 … battery monitoring unit n; n is an integer greater than or equal to 1, and the battery monitoring units 1 and 2 … are connected in sequence to form a daisy chain. The daisy chain 300 of the battery monitoring units 1 is connected to the voltage and current measuring unit 200, and the battery monitoring unit n is connected to the voltage and current measuring unit 200 through the daisy chain 300.
The number of the battery monitoring units 400 may be adjusted according to an actual application environment, the daisy chain 300 is specifically a daisy chain communication interface circuit, a first daisy chain interface of the battery management unit 100 is connected to a first daisy chain interface of the voltage and current measuring unit 200, a second daisy chain interface of the voltage and current measuring unit 200 is connected to a first daisy chain interface of the battery monitoring unit 1, a second daisy chain interface of the battery monitoring unit 1 is connected to a first daisy chain interface of the battery monitoring unit 2, and so on among the plurality of battery monitoring units 400.
By adopting the battery management topology framework provided by the embodiment, the daisy chain is used for connecting the battery management unit, the voltage and current measurement unit and the battery monitoring unit to form the ring-shaped chain topology framework, so that the additional arrangement of electronic components and peripheral circuits is avoided, the product input cost is reduced, the development of a software system is avoided, the product research and development difficulty coefficient is reduced, and meanwhile, the whole battery management system can still normally communicate when a certain line or node fails. .
Example 3
Referring to fig. 3, which is a schematic diagram illustrating another battery management topology provided in embodiment 3 of the present invention, the present specification provides an architecture as illustrated in the schematic diagram, but more or less units may be included based on conventional or non-inventive labor. In practical implementation, the system can be composed according to the architecture shown in the attached drawings. The battery management topology architecture includes a battery management unit 100, a voltage current measurement unit 200, a daisy chain 300, and a battery monitoring unit 400; the battery management unit 100 is connected to the voltage and current measuring unit 200 through a daisy chain 300, and the battery monitoring unit 400 is connected to the battery management unit 100 through a daisy chain.
The daisy chain 300 is specifically a daisy chain communication interface circuit, a first daisy chain interface of the battery management unit 100 is connected to a first daisy chain interface of the voltage and current measuring unit 200, and a second daisy chain interface of the battery management unit 100 is connected to a first daisy chain interface of the battery monitoring unit 400.
By adopting the battery management topology framework provided by the embodiment, the battery management unit, the voltage and current measurement unit and the battery monitoring unit are connected through the daisy chain to form the linear topology framework, so that the addition of electronic components and peripheral circuits is avoided, the product input cost is reduced, the development of a software system is avoided, the product research and development difficulty coefficient is reduced, and meanwhile, the whole battery management system can still normally communicate when a certain line or node fails.
Example 4
Referring to fig. 4, which is a schematic diagram illustrating another battery management topology provided in embodiment 4 of the present invention, the present specification provides an architecture as illustrated in the schematic diagram, but more or less units may be included based on conventional or non-inventive labor. In practical implementation, the system can be composed according to the architecture shown in the attached drawings. The battery management topology architecture includes a battery management unit 100, a voltage current measurement unit 200, a daisy chain 300, and a battery monitoring unit 400; the battery management unit 100 is connected to the voltage and current measuring unit 200 through a daisy chain 300, and the battery monitoring unit 400 is connected to the voltage and current measuring unit 200 through a daisy chain.
The daisy chain 300 is specifically a daisy chain communication interface circuit, a first daisy chain interface of the battery management unit 100 is connected to a first daisy chain interface of the voltage and current measuring unit 200, and a second daisy chain interface of the voltage and current measuring unit 200 is connected to a first daisy chain interface of the battery monitoring unit 400.
By adopting the battery management topology framework provided by the embodiment, the battery management unit, the voltage and current measurement unit and the battery monitoring unit are connected through the daisy chain to form the linear topology framework, so that the addition of electronic components and peripheral circuits is avoided, the product input cost is reduced, the development of a software system is avoided, the product research and development difficulty coefficient is reduced, and meanwhile, the whole battery management system can still normally communicate when a certain line or node fails.
Example 5
Referring to fig. 5, which is a schematic diagram illustrating another battery management topology provided in embodiment 5 of the present invention, the present specification provides an architecture as shown in the schematic diagram, but more or less units may be included based on conventional or non-inventive labor. In practical implementation, the system can be composed according to the architecture shown in the attached drawings. The battery management topology includes a battery management unit 100, a voltage current measurement unit 200, a daisy chain 300, and a plurality of battery monitoring units 400. The battery management unit 100 is connected to the voltage and current measuring unit 200 through a daisy chain 300, the plurality of battery monitoring units 400 are connected to each other through the daisy chain 300 in sequence to form a daisy chain, and one end of the daisy chain is connected to the battery management unit 100. The battery monitoring unit 400 includes a battery monitoring unit 1, a battery monitoring unit 2 … battery monitoring unit n; n is an integer greater than or equal to 1, and the battery monitoring units 1 and 2 … are connected in sequence to form a daisy chain. The battery monitoring unit 1 is connected to the battery management unit 100 through a daisy chain 300.
The number of the battery monitoring units 400 may be adjusted according to an actual application environment, the daisy chain 300 is specifically a daisy chain communication interface circuit, a first daisy chain interface of the battery management unit 100 is connected to a first daisy chain interface of the voltage and current measuring unit 200, a second daisy chain interface of the battery management unit 100 is connected to a first daisy chain interface of the battery monitoring unit 1, a second daisy chain interface of the battery monitoring unit 1 is connected to a first daisy chain interface of the battery monitoring unit 2, and so on among the plurality of battery monitoring units 400.
By adopting the battery management topology framework provided by the embodiment, the battery management unit, the voltage and current measurement unit and the battery monitoring unit are connected through the daisy chain to form the linear topology framework, so that the addition of electronic components and peripheral circuits is avoided, the product input cost is reduced, the development of a software system is avoided, the product research and development difficulty coefficient is reduced, and meanwhile, the whole battery management system can still normally communicate when a certain line or node fails.
Example 6
Referring to fig. 6, which is a schematic diagram illustrating another battery management topology architecture provided in embodiment 6 of the present invention, the present specification provides an architecture as illustrated in the schematic diagram, but more or less units may be included based on conventional or non-inventive labor. In practical implementation, the system can be composed according to the architecture shown in the attached drawings. The battery management topology includes a battery management unit 100, a voltage current measurement unit 200, a daisy chain 300, and a plurality of battery monitoring units 400. The battery management unit 100 is connected to the voltage and current measuring unit 200 through a daisy chain 300, the plurality of battery monitoring units 400 are connected to each other through the daisy chain 300 in sequence to form a daisy chain, and one end of the daisy chain is connected to the voltage and current measuring unit 200. The battery monitoring unit 400 includes a battery monitoring unit 1, a battery monitoring unit 2 … battery monitoring unit n; n is an integer greater than or equal to 1, and the battery monitoring units 1 and 2 … are connected in sequence to form a daisy chain. The battery monitoring unit 1 is connected with the voltage and current measuring unit 200 through a chrysanthemum 300
The number of the battery monitoring units 400 may be adjusted according to an actual application environment, the daisy chain 300 is specifically a daisy chain communication interface circuit, a first daisy chain interface of the battery management unit 100 is connected to a first daisy chain interface of the voltage and current measuring unit 200, a second daisy chain interface of the voltage and current measuring unit 200 is connected to a first daisy chain interface of the battery monitoring unit 1, a second daisy chain interface of the battery monitoring unit 1 is connected to a first daisy chain interface of the battery monitoring unit 2, and so on among the plurality of battery monitoring units 400.
By adopting the battery management topology framework provided by the embodiment, the battery management unit, the voltage and current measurement unit and the battery monitoring unit are connected through the daisy chain to form the linear topology framework, so that the addition of electronic components and peripheral circuits is avoided, the product input cost is reduced, the development of a software system is avoided, the product research and development difficulty coefficient is reduced, and meanwhile, the whole battery management system can still normally communicate when a certain line or node fails.
Example 7
Referring to fig. 7, which is a schematic flow chart illustrating a battery management method according to embodiment 7 of the present invention, the present specification provides the steps of the schematic flow chart, but more or less steps may be included based on conventional or non-inventive labor. In actual implementation, the steps shown in the figures can be performed. As shown in fig. 7, the battery management method includes:
acquiring a battery state through a voltage and current measuring unit and a battery monitoring unit based on a battery management topological structure, wherein the battery management topological structure is the battery management topological structure in any one of claims 1 to 5;
and outputting a battery use instruction and battery state evaluation information according to the battery state.
Specifically, the battery state includes: the battery pack comprises a single battery voltage, a battery temperature, a battery module total voltage, a battery system total voltage and a battery system total current.
Example 8
Referring to fig. 8, which is a schematic structural diagram of a battery management system according to embodiment 8 of the present invention, the present specification provides the structural components as shown in the schematic diagram, but more or fewer modules may be included based on conventional or non-inventive labor. In actual implementation, the modules can be constructed according to the modules shown in the figures. As shown in fig. 8, the battery management system includes:
the battery state information acquisition module 810 is used for acquiring the battery state through the voltage and current measurement unit and the battery monitoring unit;
and the processing module 820 is used for outputting a battery use instruction and battery state evaluation information according to the battery state.
It should be noted that: the foregoing descriptions of the embodiments of the present invention are provided for illustration only, and not for the purpose of limiting the invention as defined by the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment is described with emphasis on differences from other embodiments. In particular, as for the embodiment of the apparatus, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by instructions associated with hardware via a program, which may be stored in a computer readable medium.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A battery management topology, characterized in that it comprises a battery management unit (100), a voltage current measurement unit (200), a daisy chain (300) and at least one battery monitoring unit (400);
the battery management unit (100) is connected to the voltage/current measurement unit (200) through a daisy chain (300), and the battery monitoring unit (400) is connected to the battery management unit (100) or the voltage/current measurement unit (200).
2. The battery management topology architecture of claim 1, wherein the number of the battery monitoring units (400) is plural, a plurality of the battery monitoring units (400) are connected in sequence by a daisy chain (300) to form a daisy chain,
both ends of the daisy chain are connected with the battery management unit (100).
3. The battery management topology of claim 1, wherein the number of the battery monitoring units (400) is plural, and the plural battery monitoring units (400) are sequentially connected by a daisy chain (300) to form a daisy chain,
one end of the daisy chain is connected with the battery management unit (100), and the other end of the daisy chain is connected with the voltage and current measurement unit (200).
4. A battery management topology according to claim 1, wherein the battery monitoring unit (400) is connected to the battery management unit (100) via the daisy chain (300).
5. A battery management topology according to claim 1, wherein the battery monitoring unit (400) is connected to the voltage current measurement unit (200) via the daisy chain (300).
6. The battery management topology architecture of claim 1, wherein the number of the battery monitoring units (400) is plural, a plurality of the battery monitoring units (400) are connected in sequence by a daisy chain (300) to form a daisy chain,
one end of the daisy chain is connected to the battery management unit (100).
7. The battery management topology of claim 1, wherein the number of the battery monitoring units (400) is plural, and the plural battery monitoring units (400) are sequentially connected by a daisy chain (300) to form a daisy chain,
one end of the daisy chain is connected with the voltage and current measuring unit (200).
8. A battery management method, comprising:
acquiring a battery state through a voltage and current measuring unit and a battery monitoring unit based on a battery management topological structure, wherein the battery management topological structure is the battery management topological structure in any one of claims 1 to 7;
and outputting a battery use instruction and battery state evaluation information according to the battery state.
9. The battery management method of claim 8, wherein the battery status comprises: the battery pack comprises a single battery voltage, a battery temperature, a battery module total voltage, a battery system total voltage and a battery system total current.
10. A battery management system, characterized in that the battery management system comprises:
the battery state information acquisition module is used for acquiring the battery state through the voltage and current measurement unit and the battery monitoring unit;
and the processing module is used for outputting a battery use instruction and battery state evaluation information according to the battery state.
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