CN208142301U - A kind of battery management system - Google Patents
A kind of battery management system Download PDFInfo
- Publication number
- CN208142301U CN208142301U CN201721885885.3U CN201721885885U CN208142301U CN 208142301 U CN208142301 U CN 208142301U CN 201721885885 U CN201721885885 U CN 201721885885U CN 208142301 U CN208142301 U CN 208142301U
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- China
- Prior art keywords
- battery
- control terminal
- battery module
- management system
- circuit
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- 238000004891 communication Methods 0.000 abstract description 8
- 238000004146 energy storage Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000005955 Ferric phosphate Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model is suitable for technical field of battery management, provides a kind of battery management system, including：Data processing terminal, N number of control terminal, M battery module；M battery module is divided into P battery circuit by N number of control terminal；Wherein, M, N, P are the integer greater than zero, and P is less than N；Above-mentioned control terminal, battery module pass through CAN communication between data processing terminal and connect.The utility model realizes the cascade between battery management system principal and subordinate grade by CAN communication, and the structure of system is simple, at low cost, has stronger usability and practicality.
Description
Technical field
The utility model belongs to technical field of battery management more particularly to a kind of battery management system.
Background technique
Energy storage management system is referred to be combined based on energy-storage travelling wave tubes such as ferric phosphate lithium cell, super capacitors by multi-series and parallel
Made of energy storage mould group the system of power management, the functions such as protection is provided.Energy storage management system includes but is not limited to battery management
System, super capacitance management system.
Battery management system used at present mostly uses greatly host-guest architecture, by the differential communication of analog front-end chip come real
Now from the cascade of grade, for example, LINEAR LTC6804, LTC6811 series AFE, TI BQ76PL455A, NXP
MC33771.But these chip structures are complicated, higher cost, practicability is lower.
Utility model content
In view of this, the utility model embodiment provides a kind of battery management system, with the existing battery management system of simplification
The structure of system reduces cost, improves practicability.
The utility model embodiment provides a kind of battery management system, including N number of control terminal, M battery module, data
Processing terminal；
Above-mentioned N number of control terminal, M battery module pass through CAN bus between data processing terminal and connect；
M battery module is divided into P battery circuit by above-mentioned N number of control terminal；
Wherein, M, N, P are the integer greater than zero, and P is less than N.
Optionally, each battery circuit in above-mentioned P battery circuit includes Q battery module and the second control
End, wherein Q=INT (M/P), the second control terminal are connect with each of Q battery module battery module, and the second control terminal is used
In the battery information for acquiring each of Q battery module battery module.
Optionally, each of above-mentioned Q battery module battery module includes the first control terminal, and the first control terminal is used for
Acquire its battery information for corresponding to battery module.
Optionally, above-mentioned first control terminal is the acquisition mould group for including single-chip microcontroller and analog front-end chip, above-mentioned single-chip microcontroller
It is connect with analog front-end chip.
It optionally, include third control terminal in above-mentioned data processing terminal, third control terminal is connect with the second control terminal, the
Three control terminals are used to acquire the battery information of each battery circuit in P battery circuit.
It optionally, further include the 4th control terminal in above-mentioned data processing terminal, the 4th control terminal passes through with third control terminal
Ethernet or CAN bus connection；
4th control terminal is used to receive each electricity in the P battery circuit of the third control terminal acquisition
The battery information of pond group circuit.
Existing beneficial effect is the utility model embodiment compared with prior art：In hypotactic battery management system
In system, the cascade between battery management system principal and subordinate grade is realized by CAN bus, takes full advantage of communication speed in CAN bus
Fastly, the advantage that distance is remote, anti-electromagnetic interference capability is strong, can be adapted for each application field, and the structure of system is simple, cost
It is low, improve the usability and practicality of system.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for the battery management system that the utility model first embodiment provides；
Fig. 2 is the structural schematic diagram of the battery management system for the three-stage cascade that the utility model second embodiment provides；
Fig. 3 is the structural schematic diagram for the cascade battery management system of level Four that the utility model 3rd embodiment provides.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the utility model embodiment.However, it will be clear to one skilled in the art that there is no these
The utility model also may be implemented in the other embodiments of detail.In other situations, omit to well-known system,
The detailed description of apparatus, circuit and method, in case unnecessary details interferes the description of the utility model.
In order to illustrate technical solution described in the utility model, the following is a description of specific embodiments.
Embodiment one
Fig. 1 shows the structural schematic diagram of the battery management system of the utility model first embodiment offer, for the ease of
Illustrate, only the parts related to this embodiment are shown：
A kind of battery management system, including：N number of control terminal 2 (one is only shown in Fig. 1), M battery module 3 are (in Fig. 1
Only show one), data processing terminal 1；N number of control terminal 2, M battery module 3 pass through between data processing terminal 1
CAN bus connection；M battery module 3 is divided into P battery circuit 4 by N number of control terminal 2；Wherein, M, N, P be greater than
Zero integer, P are less than N；
It is realized at control terminal, battery module and data in battery management system provided in this embodiment by CAN bus
The connection relationship of terminal each section is managed, and M battery module is divided by P battery circuit by N number of control terminal, makes battery
The building form of management system is flexible and changeable, can be developed according to the host-guest architecture of battery management system and be led suitable for each application
The scheme in domain simplifies the structure of existing battery management system, reduces costs, and has stronger usability and practicality.
Embodiment two
Fig. 2 shows the structural representations of the battery management system of the three-stage cascade of the utility model second embodiment offer
Figure, for ease of description, only the parts related to this embodiment are shown, three-stage cascade battery management system as shown in Figure 2
In, there is N number of control terminal 2, M battery module 3, data processing terminal 1；N number of control terminal 2, M battery module 3, data
It is connected between processing terminal 1 by CAN bus；M battery module 3 will be divided into P battery circuit 4 by N number of control terminal 2.
Wherein, each battery circuit 4 in P battery circuit 4 includes Q battery module 3 and the second control terminal 22,
Wherein Q=INT (M/P), second control terminal 22 are connect with each of the Q battery module 3 battery module 3, institute
The second control terminal 22 is stated for acquiring the battery information of each of the Q battery module 3 battery module 3.
Wherein, each of Q battery module 3 battery module 3 includes the first control terminal 21 (being not shown in Fig. 2), institute
The first control terminal 21 is stated for acquiring its battery information for corresponding to battery module 3；
It is preferred that the first control terminal 21 is the acquisition mould group for including single-chip microcontroller and analog front-end chip, the single-chip microcontroller
It is connect with the analog front-end chip.
It include third control terminal 23 in the data processing terminal 1, the third control terminal 23 and second control terminal
22 connections, the third control terminal 22 are used to acquire the battery letter of each battery circuit 4 in the P battery circuit 4
Breath.
It should be noted that battery information specifically includes the capacity that battery includes battery, internal resistance, end of charge voltage, puts
Electric final voltage；The specific structure of second control terminal 22 can be cabinet battery management system, the specific knot of third control terminal 23
Structure can control mould group for voltage sample.
In order to make it easy to understand, the specific working mode of above-mentioned three-stage cascade battery management system is also shown in the present embodiment,
Details are as follows：
Single-chip microcontroller and analog front-end chip form the first control terminal 21 of minimum level-one, and the setting of the first control terminal 21 exists
In battery module 3, when three-stage cascade battery management system works, the analog front-end chip in the first control terminal 21, which can obtain, to be worked as
Battery information in preceding battery module 3, and by being connect with analog front-end chip, the single-chip microcontroller with CAN interface
CAN bus is established with the second control terminal 22, the first control terminal 21 can send battery information to the second control terminal 22.
Since the first control terminal 21 is set in each battery module 3, a battery circuit 4 includes Q battery module 3
With second control terminal 22；Wherein, Q=INT (M/P)；First control terminal 21 is that INT (M/P) is a, and the second control terminal 22 has
Multiple ports can be connect with each battery module 4 in the battery circuit 4 by CAN bus, and by each battery
Battery information collection acquired in mould front-end chip in module 3, which neutralizes, to be saved.
Wherein, Q is the integer being rounded downwards, such as M/P=3.7, and Q takes 3 at this time；Such as M/P=3.2, Q still takes 3 at this time.
In the present embodiment, data processing terminal 1 can be used as highest level control for confluence cabinet, third control terminal 23
Port is arranged in data processing terminal 1, i.e., setting is in confluence cabinet.
Since battery circuit 4 is P, then the second control terminal 22 is also P, and third control terminal 23 equally has multiple ends
Mouthful, it supports CAN bus connection, can be connect with P the second control terminals 22 by CAN bus, third control terminal 23 is collected and located
Manage the battery information in the M battery module 3 in the P battery circuit 4 in total.
It is understood that battery module 3 is usually expressed as multiple battery strings in the battery management system of electric car
Circuit made of connection；Battery information in above-mentioned acquisition battery module 3 is the information obtained in battery series circuit.And it is electric
When pond module 3 accesses circuit, protection circuit is generally accessed, to improve the safety and stability of system；
Wherein, the second control terminal 22 can select RACKBMS chip, i.e. cabinet battery management system；Third control terminal 23
BANKBMS chip can be selected, i.e. voltage sample controls mould group.The battery information includes but is not limited to the capacity, interior of battery
Resistance, end of charge voltage, final discharging voltage；The operation that BANKBMS chip is able to carry out includes but is not limited to, according to above-mentioned
Battery information to accurately estimate state-of-charge, maximum charge-discharge electric power, ampere-hour capacity and the changed power of battery module, and
And can correct in a short time initial state-of-charge be more than 10% error and the error of the ampere-hour capacity more than 20% or
The current measurement errors of person's a few percent.And the analog front-end chip in the first control terminal 21 can be used it is with a relatively high cost performance
Technical grade chip, such as the ML5238 of the MAX14921 of MAXIM, ROHM etc.；And single-chip microcontroller can use the monolithic of performance middle-end
Machine, such as the single-chip microcontroller of STM8, PIC18 serial band CAN interface, reduce cost.
It should be noted that the control hierarchy of the third control terminal is higher than the second control terminal in the present embodiment, it is described
The control hierarchy of second control terminal is higher than the first control terminal.
In the present embodiment, a kind of battery management system of three-stage cascade is provided, many of CAN bus are taken full advantage of
Advantage, using the master-slave cascade relationship in CAN bus realization system, the assembled battery module of single-chip microcontroller and analog front-end chip
Structure diversification can enable the price of overall plan lower while guarantee cascade communication speed and communication security, be suitable for big
The marketing of scale has stronger practicability.And the cascade structure of three-level or more can be formed, constitute ultra-large type energy storage
System.
Embodiment three
The utility model 3rd embodiment provides a kind of cascade battery management system of level Four and only shows for ease of description
Part related to the present embodiment is gone out, as shown in Figure 3：
A kind of battery management system, including：N number of control terminal 2, M battery module 3, data processing terminal 1；N number of control
End 2 processed, M battery module 3 pass through CAN bus between data processing terminal 1 and connect；N number of control terminal 2 is by M battery mould
Block 3 is divided into P battery circuit 4；
Wherein, M, N, P are the integer greater than zero, and P is less than N.
Each battery circuit 4 in the P battery circuit 4 includes the second control terminal 22 and Q battery module 4,
Wherein Q=INT (M/P), second control terminal 22 are connect with each of the Q battery module 3 battery module 3, institute
The second control terminal 22 is stated for acquiring the battery information of each of the Q battery module 3 battery module 3.
Each of the Q battery module 3 battery module 3 includes the first control terminal 21 (being not shown in Fig. 3), described
First control terminal 21 is used to acquire its battery information for corresponding to battery module 3.
It is preferred that the first control terminal 21 is the acquisition mould group for including single-chip microcontroller and analog front-end chip, the single-chip microcontroller
It is connect with the analog front-end chip.
It include third control terminal 23 in the data processing terminal 1, the third control terminal 23 and second control terminal
22 connections, the third control terminal 23 are used to acquire the battery letter of each battery circuit 4 in the P battery circuit 4
Breath.
It further include the 4th control terminal 24 in the data processing terminal 1, the 4th control terminal 24 is controlled with the third
End 23 is connected by Ethernet or CAN bus；
4th control terminal 24 is used to receive in the P battery circuit 4 that the third control terminal 23 acquires
The battery information of each battery circuit 4.
It should be noted that battery information specifically includes the capacity that battery includes battery, internal resistance, end of charge voltage, puts
Electric final voltage；The specific structure of second control terminal 22 can be acquisition mould group, and the specific structure of the third control terminal 23 can
Think that cabinet battery management system, the specific structure of the 4th control terminal 24 can control mould group for voltage sample.
The data processing terminal in level Four tandem cell management system in the present embodiment can be chief inspector's control platform, and four
Lower three class control end in grade tandem cell management system, i.e. the first control terminal 21, the second control terminal 22, third control terminal 23
Working method, it is identical as the working method of three-stage cascade battery management system provided by embodiment three, it is all to have used cascade
CAN bus, the 4th control terminal 24 and the communication of data processing terminal 1 include but is not limited to Ethernet and CAN bus.
It should be noted that the control hierarchy of the 4th control terminal is higher than third control terminal in the present embodiment, it is described
The control hierarchy of third control terminal is higher than the second control terminal, and the control hierarchy of second control terminal is higher than the first control terminal.?
In the present embodiment, a kind of cascade battery management system of level Four is provided, the cascade of lower three-level is completed by CAN bus, sufficiently
The communication distance that CAN bus is utilized is remote, the strong advantage of anti-electromagnetic interference capability, to constitute ultra-large type energy-storage battery management system
System.
Embodiment described above is only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to before
Embodiment is stated the utility model is described in detail, those skilled in the art should understand that：It still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit for various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
And range, it should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of battery management system, which is characterized in that including：N number of control terminal, M battery module, data processing terminal；
N number of control terminal, M battery module pass through CAN bus between data processing terminal and connect；
M battery module is divided into P battery circuit by N number of control terminal；
Wherein, M, N, P are the integer greater than zero, and P is less than N.
2. battery management system as described in claim 1, which is characterized in that the P battery circuit includes Q battery mould
Block and the second control terminal, wherein Q=INT (M/P), each of second control terminal and the Q battery module battery
Module connection, second control terminal are used to acquire the battery information of each of Q battery module battery module.
3. battery management system as claimed in claim 2, which is characterized in that each of described Q battery module battery
Module includes the first control terminal, and first control terminal is used to acquire its battery information for corresponding to battery module.
4. battery management system as claimed in claim 3, which is characterized in that first control terminal be include single-chip microcontroller and mould
The acquisition mould group of quasi- front-end chip, the single-chip microcontroller are connect with the analog front-end chip.
5. such as the described in any item battery management systems of claim 2 to 4, which is characterized in that wrapped in the data processing terminal
Third control terminal is included, the third control terminal is connect with second control terminal, and the third control terminal is for acquiring the P
The battery information of each battery circuit in battery circuit.
6. battery management system as claimed in claim 5, which is characterized in that further include the 4th control in the data processing terminal
End processed, the 4th control terminal are connect with the third control terminal by Ethernet or CAN bus；
4th control terminal is used to receive each battery pack in the P battery circuit of the third control terminal acquisition
The battery information of circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721885885.3U CN208142301U (en) | 2017-12-28 | 2017-12-28 | A kind of battery management system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721885885.3U CN208142301U (en) | 2017-12-28 | 2017-12-28 | A kind of battery management system |
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| CN208142301U true CN208142301U (en) | 2018-11-23 |
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| CN201721885885.3U Expired - Fee Related CN208142301U (en) | 2017-12-28 | 2017-12-28 | A kind of battery management system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384454A (en) * | 2018-12-29 | 2020-07-07 | 深圳市超思维电子股份有限公司 | Active equalization method and device for battery module |
-
2017
- 2017-12-28 CN CN201721885885.3U patent/CN208142301U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384454A (en) * | 2018-12-29 | 2020-07-07 | 深圳市超思维电子股份有限公司 | Active equalization method and device for battery module |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |