CN207559625U - A kind of distributed battery management system and power battery - Google Patents
A kind of distributed battery management system and power battery Download PDFInfo
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- CN207559625U CN207559625U CN201721674647.8U CN201721674647U CN207559625U CN 207559625 U CN207559625 U CN 207559625U CN 201721674647 U CN201721674647 U CN 201721674647U CN 207559625 U CN207559625 U CN 207559625U
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Abstract
The utility model embodiment discloses a kind of distributed battery management system and power battery.A kind of distributed battery management system, including：Master controller, multiple battery detection chips and multiple active equalization modules；Wherein, master controller is communicated to connect with multiple battery detection chips by spi bus, and multiple battery detection chips are connected one to one with multiple active equalization modules by I2C buses；Each battery detection chip is used to acquire the battery information of battery modules connected to it, master controller is used to handle multiple collected battery informations of battery detection chip, and by the multiple active equalization modules of multiple battery detection chip controls, to keep the electric quantity balancing between the single battery of multiple battery modules.By the above-mentioned means, the utility model embodiment can simplify the external cabling of circuit, the volume of product is efficiently reduced.
Description
Technical field
The utility model embodiment be related to technical field of battery management more particularly to a kind of distributed battery management system with
And power battery.
Background technology
Battery management system is generally responsible for the calculating of battery in battery pack electricity, battery protection, the electric quantity balancing between battery
Signal communication inside and outside control and battery management system etc..In the prior art, the product of battery is generally used, is all needed
Battery management system arrange in pairs or groups to control.
According to the difference of battery management system topological structure, centralized and distributed battery management system can be divided into.It concentrates
Formula structure controls detection module data acquisition and handle by microcontroller, have it is at low cost, small, it is easy to connect
Advantage；Distributed battery management system is mostly using star topology, by a battery management host module (Battery
Management System Master Unit, BMU) and multiple battery management slave module (Battery Management
System Slave Unit, BSU) form, have wiring flexibly, the convenient outstanding advantages of extension, can be according to number of batteries spirit
Configuration living.
Wherein, BMU is connected with multiple BSU by CAN (Controller Area Network) bus, and BSU is responsible for battery
Information collection communicates with host module and performs the functions such as balanced, and BMU is then responsible for data processing and task management.When product has
When having big battery capacity, battery management system need to include multiple BSU, and peripheral circuit is more, and internal harness is complicated, leads to product
Volume increases.
Utility model content
The utility model embodiment is mainly solving the technical problems that providing a kind of distributed battery management system and moving
Power battery can simplify the external cabling of circuit, efficiently reduce the volume of product.
In order to solve the above technical problems, the technical solution that the utility model embodiment uses is：A kind of distribution is provided
Formula battery management system, including：Master controller, multiple battery detection chips and multiple active equalization modules；Wherein,
Master controller is communicated to connect with multiple battery detection chips by spi bus, multiple battery detection chips with it is multiple
Active equalization module is connected one to one by I2C buses；
Each battery detection chip is used to acquire the battery information of battery modules connected to it, and master controller is used for more
A collected battery information of battery detection chip is handled, and passes through multiple multiple active equalizations of battery detection chip controls
Module, to keep the electric quantity balancing between the single battery of multiple battery modules.
Optionally, each battery detection chip includes temperature acquisition submodule, current acquisition submodule and voltage acquisition
Submodule；
Temperature acquisition submodule is used to acquire the temperature information of battery modules, and current acquisition submodule is used to acquire battery mould
The current information of group, voltage acquisition submodule are used to acquire the information of voltage of each single battery of battery modules.
Optionally, each active equalization module includes I/O expansion modules and multichannel active equalization circuit；
I/O expansion modules include multiple I/O mouthfuls, include control signal input, multiple I/O per road active equalization circuit
The control signal input of mouth and multichannel active equalization circuit connects one to one, and every road active equalization circuit is used for and battery mould
The single battery connection of group.
Optionally, the distributed battery management system, further includes：
Thermal management module is connect with master controller, for keeping the operating temperature of multiple battery modules in preset temperature model
In enclosing.
Optionally, the distributed battery management system, further includes：
Charge management module is connect with master controller, for carrying out charge control to multiple battery modules connected to it.
Optionally, the distributed battery management system, further includes：
Communication module is connect with master controller, for multiple collected battery informations of battery detection chip to be sent to
Terminal device.
Optionally, battery detection chip is LTC6811.
Optionally, it connects between multiple battery detection chips, is connect by a spi bus with master controller.
Optionally, it is in parallel between multiple battery detection chips, each battery detection chip respectively by a spi bus with
Master controller connects.
The utility model embodiment also provides a kind of power battery, distributed battery including multiple battery modules and as above
Management system.
The advantageous effect of the utility model embodiment is：The situation of the prior art is different from, the utility model embodiment
Distributed battery management system includes master controller, multiple battery detection chips and multiple active equalization modules, wherein, main control
Device is communicated to connect with multiple battery detection chips by spi bus, and multiple battery detection chips lead to multiple active equalization modules
It crosses I2C buses to connect one to one, passes through spi bus, I2C between master controller, battery detection chip and active equalization module
Bus carries out the transmission of data or control instruction, by the above-mentioned means, can simplify the external cabling of circuit, efficiently reduces production
The volume of product.
Description of the drawings
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not formed to embodiment, the element for having same reference numbers label in attached drawing are expressed as similar element, remove
Non- have a special statement, and composition does not limit the figure in attached drawing.
Fig. 1 is the structure diagram of the distributed battery management system of the utility model embodiment；
Fig. 2 is the partial structural diagram of distributed battery management system shown in FIG. 1；
Fig. 3 is the structure diagram of the distributed battery management system of another embodiment of the utility model；
Fig. 4 is the structure diagram of the distributed battery management system of another embodiment of the utility model.
Specific embodiment
For the ease of understanding the utility model, in the following with reference to the drawings and specific embodiments, the utility model is carried out more detailed
Thin explanation.It should be noted that when element is expressed " being fixed on " another element, it can be directly in another element
Above or therebetween there may be one or more elements placed in the middle.When an element is expressed " connection " another element, it can
To be directly to another element or there may be one or more elements placed in the middle therebetween.
Unless otherwise defined, the skill of technical and scientific term all used in this specification with belonging to the utility model
The normally understood meaning of technical staff in art field is identical.In the art used in the description of the utility model in this specification
Language is intended merely to the purpose of description specific embodiment, is not intended to limitation the utility model.
Referring to Fig. 1, Fig. 1 is the structure diagram of the distributed battery management system of the utility model embodiment, such as Fig. 1
Shown, which includes master controller 100, multiple battery detection chips 200 and multiple active equalization moulds
Block 300, wherein, master controller 100 is communicated to connect with multiple battery detection chips 200 by spi bus, multiple battery detection cores
Piece 200 is connected one to one with multiple active equalization modules 300 by I2C buses, i.e., each battery detection chip 200 passes through
I2C buses are connect with each active equalization module 300, master controller 100, battery detection chip 200 and active equalization module 300
Between the transmission of data or control instruction is carried out by spi bus, I2C buses.
Each battery detection chip 200 is used to acquire the battery information of battery modules 400 connected to it, master controller
100 are used to handle, and pass through multiple battery detection chips multiple 200 collected battery informations of battery detection chip
The 200 multiple active equalization modules 300 of control, to keep the electric quantity balancing between the single battery of multiple battery modules 400.
Wherein, as shown in Fig. 2, each battery modules 400 include the single battery 410 of 6-12 series connection.The present embodiment
In, connect between multiple battery modules 400, in other embodiments, can also connect between several battery modules 400 or
Connection in series-parallel.
Optionally, each battery detection chip 200 includes temperature collecting module 210, current acquisition module 220 and voltage
Acquisition module 230, temperature collecting module 210 are used to acquire the temperature information of battery modules 400, and current acquisition module 220 is used for
The current information of battery modules 400 is acquired, voltage acquisition module 230 is used to acquire each single battery of battery modules 400
Information of voltage.
For example, temperature collecting module 210 can acquire the temperature information of battery modules 400 by NTC thermistor；Electric current
Acquisition module 220 can be by the way that an electric current inductive reactance be connected in series in the circuit of battery modules 400, by measuring the resistance two
The voltage at end acquires the current information of battery modules 400；Voltage acquisition module 230 can be by positive and negative with each single battery
Pole both ends connect, and the voltage of each single battery of battery modules 400 is acquired by obtaining the differential signal of positive and negative end
Information.
Master controller 100 receive multiple battery modules 400 that multiple battery detection chips 200 transmit temperature information,
After current information and monomer battery voltage information, real-time operation and condition discrimination are carried out to above- mentioned information, supervised by multiple batteries
Survey chip 200 to each active equalization module 300 transmit control instruction, with keep the single battery 410 of multiple battery modules 400 it
Between electric quantity balancing
Each active equalization module 300 includes I/O expansion modules 310 and multichannel active equalization circuit 320, I/O extensions
Module 210 includes multiple I/O mouthfuls, includes control signal input, multiple I/O mouthfuls and multichannels per road active equalization circuit 320
The control signal input of active equalization circuit 320 connects one to one, i.e., every an I/O mouthfuls and each active equalization circuit 320
Control signal input connection, per road active equalization circuit 320 for being connect with a single battery of battery modules.It is excellent one
In the embodiment of choosing, each active equalization module 300 includes 310 and 12 road active equalization circuit 320 of I/O expansion modules.
The I2C signals received are switched to I/O signals I/O mouthfuls corresponding by I/O expansion modules 310, and the I/O signals are as control
The control signal of active equalization circuit 320 connected to it is made, for controlling the conducting of the switching tube in active equalization circuit 320
Or close, to realize transfer of the charge from high voltage single battery to low-voltage single battery, reach multiple single batteries 420 it
Between electric quantity balancing, and then keep the electric quantity balancing between multiple battery modules 400.
Referring to Fig. 3, in some embodiments, which further includes：Heat treatment module 500, with
Master controller 100 connects, for keeping the operating temperature of multiple battery modules 400 in preset temperature range.
Optionally, heat treatment module 500 includes heating submodule and heat dissipation submodule, is received when master controller 100
When temperature information is higher than the high temperature threshold value of preset temperature range, the control heating submodule work of master controller 100, with to multiple electricity
Pond module 400 is heated；When the temperature information that master controller 100 receives is less than the low temperature threshold of preset temperature range,
The control heat dissipation submodule 520 of master controller 100 works, to radiate to multiple battery modules 400.
In some embodiments, which further includes：Charge management module 600, with master controller
100 connections for carrying out charge control to multiple battery modules 400 connected to it, such as adjust multiple battery modules 400 and charge
When indices, it is ensured that the charge circuit for charging normal and controlling multiple battery modules 400 of multiple battery modules 400
Open and close.
In some embodiments, which further includes：Communication module 700 connects with master controller 100
It connects, for multiple 200 collected battery informations of battery detection chip to be sent to terminal device, to realize to multiple battery moulds
The real time monitoring of group 400 and/or the control instruction for making 100 receiving terminal apparatus of master controller.
Communication module 700 can be CAN bus, which passes through CAN bus communication modes and terminal
Equipment is into row data communication and/or can be GPRS module, which passes through wireless communication mode and terminal
Equipment is into row data communication.
Optionally, battery detection chip is LTC6811, and LTC6811 is a complete battery monitoring IC, can be measured more
Up to the single battery of 12 section series connection, have 16 Δ Σ ADC of programmable three rank noise filters, there is very strong anti-interference energy
Power, and there are one separately addressable serial line interfaces for each LTC6811 tools.When using LTC6811-1, multiple ponds monitor chip
It connects between 200, is connect by a spi bus with master controller 100.
When using LTC6811-2, as shown in figure 4, can be in parallel between the monitoring chip 200B of multiple ponds, each battery detection
Chip 200B is connect respectively by a spi bus with master controller 100B.
The distributed battery management system of the present embodiment includes master controller 100, multiple battery detection chips 200 and multiple
Active equalization module 300, wherein, master controller 100 is communicated to connect with multiple battery detection chips 200 by spi bus, multiple
Battery detection chip 200 is connected one to one with multiple active equalization modules 300 by I2C buses, master controller 100, battery
The transmission for carrying out data or control instruction between chip 200 and active equalization module 300 by spi bus, I2C buses is monitored,
By the above-mentioned means, the external cabling of circuit can be simplified, the volume of product is efficiently reduced.
The utility model embodiment also provides a kind of power battery, including multiple battery modules and distribution as described above
Battery management system, wherein, each battery detection chip of distributed battery management system and each active equalization module difference
It is connect with a battery modules.
It should be noted that the preferable implementation of the utility model is given in the specification and its attached drawing of the utility model
Example, still, the utility model can be realized by many different forms, however it is not limited to the described implementation of this specification
Example, for these embodiments not as the additional limitation to the utility model content, the purpose for providing these embodiments is made to this reality
With the understanding more thorough and comprehensive of novel disclosure.Also, above-mentioned each technical characteristic continues to be combined with each other, and is formed not upper
The various embodiments that face is enumerated are accordingly to be regarded as the range of the utility model specification record；Further, to ordinary skill
For personnel, it can be improved or converted according to the above description, and all these modifications and variations should all belong to this practicality newly
The protection domain of type appended claims.
Claims (10)
1. a kind of distributed battery management system, which is characterized in that including：Master controller, multiple battery detection chips and multiple
Active equalization module；Wherein,
The master controller is communicated to connect with multiple battery detection chips by spi bus, multiple battery detection cores
Piece is connected one to one with multiple active equalization modules by I2C buses；
Each battery detection chip is used to acquire the battery information of battery modules connected to it, and the master controller is used for
Multiple collected battery informations of battery detection chip are handled, and pass through multiple battery detection chip controls
Multiple active equalization modules, to keep the electric quantity balancing between the single battery of multiple battery modules.
2. distributed battery management system according to claim 1, which is characterized in that
Each battery detection chip includes temperature acquisition submodule, current acquisition submodule and voltage acquisition submodule；
The temperature acquisition submodule is used to acquire the temperature information of the battery modules, and the current acquisition submodule is used to adopt
Collect the current information of the battery modules, the voltage acquisition submodule is used to acquire each single battery of the battery modules
Information of voltage.
3. distributed battery management system according to claim 2, which is characterized in that
Each active equalization module includes I/O expansion modules and multichannel active equalization circuit；
The I/O expansion modules include multiple I/O mouthfuls, and active equalization circuit described in per road includes control signal input, more
The control signal input of a I/O mouthfuls and active equalization circuit described in multichannel connects one to one, described in per road actively
Weighing apparatus circuit is used to connect with a single battery of battery modules.
4. distributed battery management system according to claim 2, which is characterized in that further include：
Thermal management module is connect with the master controller, for keeping the operating temperature of multiple battery modules in default temperature
In the range of degree.
5. distributed battery management system according to claim 1, which is characterized in that further include：
Charge management module is connect with the master controller, for charging to multiple battery modules connected to it
Control.
6. distributed battery management system according to claim 1, which is characterized in that further include：
Communication module is connect with the master controller, for multiple collected battery informations of battery detection chip to be sent out
It send to terminal device.
7. according to claim 1-6 any one of them distributed battery management systems, which is characterized in that
The battery detection chip is LTC6811.
8. distributed battery management system according to claim 7, which is characterized in that
It connects between multiple battery detection chips, is connect by a spi bus with the master controller.
9. distributed battery management system according to claim 7, which is characterized in that
In parallel between multiple battery detection chips, each battery detection chip passes through a spi bus and institute respectively
State master controller connection.
10. a kind of power battery, which is characterized in that including multiple battery modules and such as claim 1-9 any one of them point
Cloth battery management system.
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| CN201721674647.8U CN207559625U (en) | 2017-12-05 | 2017-12-05 | A kind of distributed battery management system and power battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109910681A (en) * | 2019-01-23 | 2019-06-21 | 江苏敏安电动汽车有限公司 | A kind of BMS active equalization control system for electric vehicle |
| CN110061479A (en) * | 2019-05-17 | 2019-07-26 | 深圳市富满电子集团股份有限公司 | A kind of li-ion cell protection system and guard method |
| CN110356279A (en) * | 2019-07-31 | 2019-10-22 | 江西恒动新能源有限公司 | A kind of battery voltage sampling and equalization cascade system |
| CN111766520A (en) * | 2020-07-09 | 2020-10-13 | 陕西正通电子科技有限公司 | High-speed acquisition method for monitoring data of distributed storage battery |
-
2017
- 2017-12-05 CN CN201721674647.8U patent/CN207559625U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109910681A (en) * | 2019-01-23 | 2019-06-21 | 江苏敏安电动汽车有限公司 | A kind of BMS active equalization control system for electric vehicle |
| CN110061479A (en) * | 2019-05-17 | 2019-07-26 | 深圳市富满电子集团股份有限公司 | A kind of li-ion cell protection system and guard method |
| CN110061479B (en) * | 2019-05-17 | 2022-01-04 | 富满微电子集团股份有限公司 | Lithium battery protection system and protection method |
| CN110356279A (en) * | 2019-07-31 | 2019-10-22 | 江西恒动新能源有限公司 | A kind of battery voltage sampling and equalization cascade system |
| CN111766520A (en) * | 2020-07-09 | 2020-10-13 | 陕西正通电子科技有限公司 | High-speed acquisition method for monitoring data of distributed storage battery |
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Address after: 518000 19th floor, building 1, kaidar group center building, No. 168, Tongsha Road, Xinwei community, Xili street, Nanshan District, Shenzhen, Guangdong Patentee after: Shenzhen Delian Minghai New Energy Co.,Ltd. Address before: 518000 Shiyan Street, Baoan District, Shenzhen City, Guangdong Province, No. 2 Dezheng Road, Shilong Community, Innovation World Sino-Thai Information Technology Industrial Park Factory Building A2, West of Building 13 Patentee before: Shenzhen Poweroak Newener Co.,Ltd. |