CN207664182U - A kind of layer-stepping multistage battery management system - Google Patents
A kind of layer-stepping multistage battery management system Download PDFInfo
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- CN207664182U CN207664182U CN201721367938.2U CN201721367938U CN207664182U CN 207664182 U CN207664182 U CN 207664182U CN 201721367938 U CN201721367938 U CN 201721367938U CN 207664182 U CN207664182 U CN 207664182U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model discloses a kind of layer-stepping multistage battery management system, which includes several subsystems, several middle layers BMU control panels and total BMU control panels；Subsystem is provided with one or more LECU sampling plates sampled to the monomer and temperature of battery-end；Middle layer BMU control panels are connect at least one subsystem；Its collected monomer voltage and temperature data are sent to middle layer BMU control panels connected to it by the LECU sampling plates in each subsystem；Total BMU control panels are connect with middle layer BMU control panels, and monomer voltage and temperature data are transmitted to total BMU control panels by middle layer BMU control panels.The utility model can it is more in single battery number, when subsystem is more, the relay that needs protocol conversion, BMU to be controlled is more, strand design is long, pass through layer-stepping multistage battery management system framework, the difficulty of BMS management can be reduced, total inorganic nitrogen is reduced, reaches Project Technical index request.
Description
Technical field
The utility model is related to technical field of battery management, more particularly to a kind of layer-stepping multistage battery management system.
Background technology
With power battery in new-energy automobile and energy storage field using more and more extensive, the application of different field is to power
Battery technology requirement is also higher and higher, every to battery to unit battery module burst mode, series-parallel system and remote monitoring
A monomer sampling, temperature sampling have reported strict requirements, have especially encountered the battery cell number to be managed, subsystem
In the case that there are many number, while it may also be desirable to BMU in some more complicated projects and controlling No. more than ten relays, and need
In the case of relay, protocol conversion, single BMU is likely difficult to competent project demands.If design may increase electricity by force
The difficulty of pond PACK system winding displacements, in some instances it may even be possible to lead to raising and the electromagnetism Interference of CAN bus load factor.
The subsystem figure of board management is controlled for the single BMU of the prior art as shown in Figure 1.Wherein, subsystem is battery pack
At PACK systems, each subsystem according to design conditions be equipped with different number LECU sampling plates (be used for monomer voltage and temperature
Degree sampling)；If monomer number increases, subsystem number increases, and can have exceeded the ability that single BMU control panels can manage,
Increase so as to cause CAN bus load factor, so needing to be improved system design.
Utility model content
The purpose of this utility model is to provide a kind of layer-stepping multistage battery management system, and master control borad BMU is carried out grade
Join hierarchical control, layer-stepping multistage battery management system is independently to open whole system control section, for complication system and list
When a BMU control panels are difficult to realize, the difficulty of BMS management can be reduced, by establishing layer-stepping multistage battery management system frame
Structure can reduce load factor, reduce electromagnetism harness Conduction Interference, reach certain project demands.
In order to achieve the above object, a kind of layer-stepping multistage battery management system provided by the utility model, it includes：
Several subsystems are provided with one or more LECU sampled to the monomer and temperature of battery-end and sample
Plate；
Several middle layers BMU control panels, connect at least one subsystem；LECU sampling plates in each subsystem
Collected monomer voltage and temperature data are sent to the middle layer BMU control panels being connect with the LECU sampling plates；
One total BMU control panel, connect with the middle layer BMU control panels, and the middle layer BMU control panels are by monomer
Voltage and temperature data are transmitted to total BMU control panels.
Preferably, the quantity of the middle layer BMU control panels calculated by distributed management mode and all subsystems
Quantity matches.
Preferably, the grid line that the LECU sampling plates of subsystems are connect with each middle layer BMU control panels is in this
The channels subsystem CAN2 of interbed BMU control panels；
Each middle layer BMU control panels connect to form multiple subsystem nets with multiple subsystems by the channels subsystem CAN2
Network；
The subsystems network of each middle layer BMU control panels is parallel with one another.
Preferably, the LECU sampling plates are by microcontroller control and the limited sampling plate of memory headroom.
Preferably, the channel attached grid lines of CAN2 of each middle layer BMU control panels and total BMU control panels are among this
The channels subsystem CAN1 of layer BMU controls；
The channels subsystem CAN1 of each middle layer BMU control panels connect with the channels CAN2 of total BMU control panels to be formed
Between network.
Preferably, the monomer voltage and temperature that the LECU sampling plates of middle layer BMU control panels receiving subsystem are sent to
Data and preliminary screening or protocol conversion are carried out to the data, the middle layer BMU control panels pass through the go-between will
Data after preliminary screening or protocol conversion are sent to total BMU control panels and carry out data processing；
Wherein, middle layer BMU control panels execute the protocol conversion include：CAN protocol turns 485 communication protocols, CAN associations
View turns Ethernet protocol, CAN protocol turns LIN agreements, CAN protocol turns FlexRay agreements.
Preferably, total BMU control panels are connect by the channels CAN1 of total BMU control panels with vehicle, will pass through total BMU
Control panel treated data transmission is to the vehicle；
The channels CAN1 of total BMU control panels are the external network of vehicle, are connect with the ECU unit communications of vehicle, described
The ECU units of vehicle include full-vehicle control unit, instrument pack, insulating unit, thermal management unit and recorder unit.
Preferably, total BMU control panels are connect by its channel CAN3 with charging pile, and the channels CAN3 of total BMU control panels are
The external network of charging pile.
Preferably, the centre position for forming the harness of the go-between is provided with the middle layer BMU controls of terminal resistance
The subsystem network of making sheet；The resistance value of the terminal resistance is 120 Europe.
Compared with prior art, the beneficial effects of the utility model are：
(1) the utility model can solve that single battery number is more, and subsystem is more, the requirement more than the relay to be controlled.
(2) the utility model can carry out data forwarding, and the requirement of relay is done in protocol conversion.
(3) the utility model can reduce load factor, reduce electromagnetism harness Conduction Interference, have good application prospect and
Development space.
(4) the utility model reduces system complexity, has refined the functions and responsibility of complication system, has kept away simultaneously
Exempt from the risk all paralysed once because some subsystem goes wrong.
Description of the drawings
The subsystem figure of the single BMU management of Fig. 1 the utility model；
The layer-stepping multistage battery management system Organization Chart of Fig. 2 the utility model；
The tree-like CAN bus network topological diagram of Fig. 3 the utility model；
The middle layer BMU of Fig. 4 the utility model does the website functional diagram of transistroute.
Specific implementation mode
The utility model provides a kind of layer-stepping multistage battery management system, in order to keep the utility model more obvious easily
Understand, the utility model is described further below in conjunction with the drawings and specific embodiments.
In the layer-stepping multistage battery management system of the utility model, cascade hierarchical control is carried out by total BMU control panels；
Layer-stepping multistage battery management system be by whole system control section independently separate, the system include several subsystems,
Several middle layers BMU control panels and a total BMU control panel.
Wherein, subsystem is provided with one or more LECU sampling plates, and list is carried out by LECU sampling plates in battery-end
The sampling of body and temperature.
Middle layer BMU control panels be responsible for communication data forwarding report, protocol conversion, relay control or transistroute make
With.Middle layer BMU control panels are connect at least two subsystems, and the LECU sampling plates of each subsystem are by its collected monomer
Voltage and temperature data are sent to the middle layer BMU control panels being connect with LECU sampling plates.
Total BMU control panels are attached with all middle layer BMU control panels, and middle layer BMU control panels are by monomer voltage
With temperature data total BMU control panels are transmitted to be summarized, then carry out data analysis, algorithm optimization, fault alarm and diagnosis,
The operations such as line writes with a brush dipped in Chinese ink, power-on and power-off.
Illustratively, as shown in Fig. 2, two subsystems can be managed by a middle layer BMU control panel, then two sons
The corresponding middle layer BMU control panels connection of system.I.e. subsystem 1 and subsystem 2 are controlled with the first middle layer BMU1 respectively
Plate connects, and subsystem 3 and subsystem 4 connect with the second middle layer BMU2 control panels respectively, and so on to subsystem 2n-1 with
Subsystem 2n is connect with the n-th middle layer BMU2 control panels respectively.Meanwhile between subsystems be parallel relationship.
So subsystem 1 and subsystem 2 are acquired the data of monomer voltage and temperature by LECU sampling plates, and will
The data are uploaded to the first middle layer BMU1 control panels, subsystem 3 and subsystem 4 by collected monomer voltage and temperature data
It is uploaded to the second middle layer BMU2 control panels；And so on to subsystem 2n-1 and subsystem 2n by collected monomer voltage and
Temperature data uploading gives the n-th middle layer BMUn control panels.Respective data are transmitted to always by all middle layer BMU control panels
BMU control panels are summarized and are handled.
Wherein, subsystem is the PACK systems of battery composition, and each subsystem can be equipped with different number according to design conditions
LECU sampling plates.It when the amount of monomer of system is larger, then needs to carry out distributed management, by calculating, be managed calculating
The optimal solution of the middle layer BMU control panel numbers of subsystem.
For example, when the PACK systems of design 450Ah, 624v, if being designed with single spur track system, one list of LiFePO4
Bulk voltage is nominally 3.2v, 50Ah, which needs 1755 monomers altogether, if as long as one BMU control panel of monomer of the quantity
It is managed and is extremely complex data outflow.
So module that can first monomer composition three simultaneously, i.e. a middle layer BMU control panel are connected with three subsystems.Again
Using same three middle layer BMU control panels and a total BMU control panel, three branch roads systems are formed.Then in each subsystem
There are 195 monomers, a middle layer BMU control panel being connect with subsystem only needs to manage 195 monomers.
As described above, the cascade number of middle layer BMU control panels number and tree-like CAN bus topological diagram can be according to specific
System-computed and obtain.Each middle layer BMU control panels at least have the above different sub-systems network of two-way, so as to realize not
It the functions such as receives, processs and transmit, report with data flow between network, while reducing total inorganic nitrogen.
It is illustrated in figure 3 the tree-like CAN bus network topological diagram of the utility model.Illustratively, the LECU of subsystems
The grid line that sampling plate is connect with each middle layer BMU control panels is the channels subsystem CAN2, then each middle layer BMU control panels
It is attached by the channels subsystem CAN2 and all LECU sampling plates of multiple subsystems, to form subsystems net
Network.Such as the channels subsystem CAN2 of the first middle layer BMU1 control panels are L1 straight lines and the second middle layer BMU2 controls in Fig. 3
The channels subsystem CAN2 of plate are L2 straight lines.
Wherein, CAN2 of each middle layer BMU control panels by the channels respective subsystem CAN1 with total BMU control panels
Channel connects to form go-between, plays the functions such as data forwarding, protocol conversion, relay control or transistroute；It is i.e. each
The channels CAN1 of the corresponding respective subsystem of middle layer BMU control panels are all to be connected in same root grid line (i.e. total BMU in parallel
The channels CAN2 of control panel) on.For example, the channels subsystem CAN1 of the first middle layer BMU1 control panels and the second intermediate BMU2 controls
The subsystem channel of making sheet is both connected to the channels CAN2 of total BMU control panels.
The channels CAN1 of total BMU control panels are the external networks of vehicle framework, are and the other ECU units of vehicle
(Electronic Control Unit, electronic control unit) interactive communication, for example, the channels CAN1 point of total BMU control panels
It is not connect with VCU (full-vehicle control unit), instrument pack, insulating unit, thermal management unit and recorder unit.
The channels CAN3 of total BMU control panels are the external network of charging pile, and charging pile element interactive communication.
Wherein, CAN2 of each middle layer BMU control panels by the channels respective subsystem CAN1 with total BMU control panels
Channel connects into go-between, plays the functions such as data forwarding, protocol conversion, transistroute, specific as follows：
Data forwarding is exactly to carrying out Effective selection from the collected data of LECU sampling plates.Middle layer BMU control panels connect
Receive and LECU the sampling plates monomer voltage and temperature data that report of preliminary screening subsystem, then by the data after screening again on
Total BMU control panels are transmitted to, vehicle is transmitted to finally by the channels CAN1 of total BMU control panels.
Wherein, on the one hand middle layer BMU control panels by the control of total BMU control panels and are dispatched, while it can be to LECU
The data that sampling plate reports are calculated and are analyzed.
In the case where LECU sampling plates can not be changed, according to the communication protocol formulated in advance, agreement is done to data and is turned
It changes, to be converted into the data flow that total BMU control panels can be handled.I.e. protocol conversion refers to being held by middle layer BMU control panels
485 communication protocols of row CAN protocol turn, CAN protocol turns Ethernet protocol, CAN protocol turns LIN agreements, CAN protocol turns FlexRay
The operations such as agreement.
Relay control refers to when the number of relays of complication system requirement control is relatively more, and single BMU control panels are difficult to
When competent, in middle layer plus the special BMU control panels for controlling relay.
As shown in figure 4, when designing harness excess-length, traffic spike in the channel C AN high-speed transfers of go-between,
Back wave is formed in transmission-wire terminal, interferes original signal, so needing to add at the intermediary locations of harness a with terminal
The terminal resistance of the BMU control panels of resistance, middle layer BMU control panels may be configured as 120 Europe.Wherein, harness transmits in one end
The terminal resistance of interbed BMU control panels is 120 Europe, and the terminal resistance of the LECUn sampling plates of other end connection is 120 Europe.
So transistroute function is using middle layer BMU control panels as a node, middle layer BMU control panels
All collected information of LECU sampling plates are uploaded to main BMU control panels, wait for that the information that main BMU control panels receive is converged
Send instructions down again after bulk analysis.According to the instruction and current real-time condition, instruction is communicated to LECU sampling plates.
When terminal resistance is identical as the impedance of communication cable, effect is matching bus impedance, improves the anti-of data communication
Interference and reliability.On the other hand, physical layer information transmission, signal replication, adjustment and enlarging function are realized.
Although the content of the utility model is discussed in detail by above preferred embodiment, but it should be appreciated that on
The description stated is not considered as limitations of the present invention.After those skilled in the art have read the above, for
A variety of modifications and substitutions of the utility model all will be apparent.Therefore, the scope of protection of the utility model should be by appended
Claim limit.
Claims (9)
1. a kind of layer-stepping multistage battery management system, which is characterized in that it includes：
Several subsystems are provided with one or more LECU sampling plates sampled to the monomer and temperature of battery-end；
Several middle layers BMU control panels, connect at least one subsystem；LECU sampling plates in each subsystem will be adopted
The monomer voltage and temperature data collected is sent to the middle layer BMU control panels being connect with the LECU sampling plates；
One total BMU control panel, connect with the middle layer BMU control panels, and the middle layer BMU control panels are by monomer voltage
It is transmitted to total BMU control panels with temperature data.
2. a kind of layer-stepping multistage battery management system as described in claim 1, which is characterized in that
The quantity and the quantity of all subsystems of the middle layer BMU control panels calculated by distributed management mode match.
3. a kind of layer-stepping multistage battery management system as described in claim 1, which is characterized in that
The grid line that the LECU sampling plates of subsystems are connect with each middle layer BMU control panels is middle layer BMU controls
The channels subsystem CAN2 of plate；
Each middle layer BMU control panels connect to form multiple subsystem networks by the channels subsystem CAN2 with multiple subsystems；
The subsystems network of each middle layer BMU control panels is parallel with one another.
4. a kind of layer-stepping multistage battery management system as described in claim 1, which is characterized in that
The LECU sampling plates are by microcontroller control and the limited sampling plate of memory headroom.
5. a kind of layer-stepping multistage battery management system as claimed in claim 3, which is characterized in that
The channel attached grid lines of CAN2 of each middle layer BMU control panels and total BMU control panels are middle layer BMU controls
The channels subsystem CAN1；
The channels subsystem CAN1 of each middle layer BMU control panels connect to form mid-level net with the channels CAN2 of total BMU control panels
Network.
6. a kind of layer-stepping multistage battery management system as claimed in claim 5, which is characterized in that
Data for the monomer voltage and temperature that the LECU sampling plates of middle layer BMU control panel receiving subsystems are sent to and to this
Data carry out preliminary screening or protocol conversion, and the middle layer BMU control panels are by the go-between by preliminary screening or association
It discusses transformed data and is sent to total BMU control panels progress data processing；
Wherein, middle layer BMU control panels execute the protocol conversion include：CAN protocol turns 485 communication protocols, CAN protocol turns
Ethernet protocol, CAN protocol turn LIN agreements, CAN protocol turns FlexRay agreements.
7. a kind of layer-stepping multistage battery management system as described in claim 1, which is characterized in that
Total BMU control panels are connect by the channels CAN1 of total BMU control panels with vehicle, will be passed through total BMU control panels and be handled
Data transmission afterwards is to the vehicle；
The channels CAN1 of total BMU control panels are the external network of vehicle, are connect with the ECU unit communications of vehicle, the vehicle
ECU units include full-vehicle control unit, instrument pack, insulating unit, thermal management unit and recorder unit.
8. a kind of layer-stepping multistage battery management system as described in claim 1, which is characterized in that
Total BMU control panels are connect by its channel CAN3 with charging pile, and the channels CAN3 of total BMU control panels are the outsides of charging pile
Network.
9. a kind of layer-stepping multistage battery management system as claimed in claim 5, which is characterized in that
Formed the harness of the go-between centre position be provided with terminal resistance middle layer BMU control panels subsystem
Network；The resistance value of the terminal resistance is 120 Europe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721367938.2U CN207664182U (en) | 2017-10-23 | 2017-10-23 | A kind of layer-stepping multistage battery management system |
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| CN201721367938.2U CN207664182U (en) | 2017-10-23 | 2017-10-23 | A kind of layer-stepping multistage battery management system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112291387A (en) * | 2020-12-23 | 2021-01-29 | 深圳市明微电子股份有限公司 | Method, device and equipment for automatically addressing master and slave machines and storage medium |
| CN114006060A (en) * | 2021-10-29 | 2022-02-01 | 蜂巢能源科技(无锡)有限公司 | Energy storage battery management system |
| CN115107563A (en) * | 2022-07-22 | 2022-09-27 | 潍柴动力股份有限公司 | Dormancy control method, device, equipment and storage medium of battery management system |
-
2017
- 2017-10-23 CN CN201721367938.2U patent/CN207664182U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112291387A (en) * | 2020-12-23 | 2021-01-29 | 深圳市明微电子股份有限公司 | Method, device and equipment for automatically addressing master and slave machines and storage medium |
| CN112291387B (en) * | 2020-12-23 | 2021-05-04 | 深圳市明微电子股份有限公司 | Method, device and equipment for automatically addressing master and slave machines and storage medium |
| CN114006060A (en) * | 2021-10-29 | 2022-02-01 | 蜂巢能源科技(无锡)有限公司 | Energy storage battery management system |
| CN114006060B (en) * | 2021-10-29 | 2023-07-07 | 蜂巢能源科技(无锡)有限公司 | Energy storage battery management system |
| CN115107563A (en) * | 2022-07-22 | 2022-09-27 | 潍柴动力股份有限公司 | Dormancy control method, device, equipment and storage medium of battery management system |
| CN115107563B (en) * | 2022-07-22 | 2024-07-19 | 潍柴动力股份有限公司 | Sleep control method, device, equipment and storage medium of battery management system |
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