CN203456910U - Battery management system - Google Patents

Battery management system Download PDF

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Publication number
CN203456910U
CN203456910U CN201320562095.7U CN201320562095U CN203456910U CN 203456910 U CN203456910 U CN 203456910U CN 201320562095 U CN201320562095 U CN 201320562095U CN 203456910 U CN203456910 U CN 203456910U
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CN
China
Prior art keywords
battery management
battery
module
major loop
detection module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320562095.7U
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Chinese (zh)
Inventor
杨一杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI CHURUI ENERGY TECHNOLOGY Co Ltd
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SHANGHAI CHURUI ENERGY TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN201320562095.7U priority Critical patent/CN203456910U/en
Application granted granted Critical
Publication of CN203456910U publication Critical patent/CN203456910U/en
Expired - Fee Related legal-status Critical Current
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model discloses a battery management system. The battery management system comprises batteries, a main control board, acquisition plates and an external circuit, the main control board is provided with a charging and discharging major loop and a battery management control module, each acquisition plate is provided with a detection module, the main control board is connected with the acquisition plates via CAN buses, and the external circuit is connected with the main control board and the batteries via lines. According to the battery management system, the main control board and the acquisition plates are independently employed, and the CAN buses are employed to communicate so that the isolation is improved, the integral stability of the system is improved, and the reliability of data operation, acquisition and communication is improved.

Description

A kind of battery management system
Technical field
The utility model relates to battery power field, relates in particular to a kind of battery management system.
Background technology
The battery protecting plate that is directed to energy storage of home sale is mainly used in mobile base station, electric bicycle, photovoltaic energy storage system etc. at present.Such baffle structure is all integral type, and the balanced loop of sampling and control and battery is all made on a plate, and plank exists some problems like this: coefficient of safety is low, and plank power consumption is large, not well isolation, and sampling precision is low.The protection reliability of storage battery and equipment is lower.Different according to the capacity of load, selected battery pack quantity is also different.The energy-storage system of commonplace 10KW, needs the Cascade System of 4 2.5KW to form, and centre inevitably needs the communication between each unit, according to the baffle of current domestic integral type, probably occurs the faults such as loss of data, false alarm during communication.
Utility model content
In view of the problems referred to above that current battery baffle exists, the utility model provides a kind of battery management system greatly to improve in entire system stability, and the reliability of data operation, collection, communication also improves greatly.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of battery management system, described battery management system comprises battery pack, master control borad, collection plate and external circuit, described master control borad is provided with and discharges and recharges major loop and battery management control modules, described collection plate is provided with detection module, between described master control borad and collection plate, by CAN bus, connect, described external circuit is connected with master control borad, battery pack by circuit.
According to an aspect of the present utility model, described in discharge and recharge the MOSFET pipe that major loop is provided with redundancy.
According to an aspect of the present utility model, described in discharge and recharge major loop and be provided with one group of current sample module.
According to an aspect of the present utility model, described in discharge and recharge major loop and be provided with DC power supply output module.
According to an aspect of the present utility model, described external circuit is provided with fuse and air switch, described fuse and air switch two ends be provided with voltage detection module.
According to an aspect of the present utility model, described battery pack comprises some cells and balanced return circuit module, and described balanced return circuit module is comprised of cell, resistance, switch, and the switch place of described balanced return circuit module is provided with alarm module.
According to an aspect of the present utility model, described detection module comprises the temperature detecting module on battery and discharges and recharges the temperature detecting module on the MOSFET pipe of major loop.
According to an aspect of the present utility model, described detection module comprises total voltage detection module on voltage detection module on battery and major loop.
According to an aspect of the present utility model, described battery management control modules comprises usb interface module.
According to an aspect of the present utility model, described battery pack is lithium battery group.
The advantage that the utility model is implemented: by adopting master control borad and collection plate independent, with by CAN bus, carry out the mode of communication, isolation gets a promotion, by this scheme, entire system stability improves greatly, and the reliability of the computing of data, collection, communication is also improved; Discharge and recharge the method that adopts series redundancy MOSFET pipe on major loop, once puncture uncontrollablely, also have the MOSFET pipe of redundancy to carry out safety cut-off, guaranteed that battery can super-charge super-discharge so that not threaten the safety of personal property, greatly improved fail safe.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the module sketch of a kind of battery management system described in the utility model;
Fig. 2 is the way circuit sketch of a kind of battery management system described in the utility model;
Fig. 3 be a kind of battery management system described in the utility model discharge and recharge major loop and external circuit simplified schematic diagram;
Fig. 4 is the balanced loop schematic diagram of a kind of battery management system described in the utility model;
Fig. 5 is a kind of balanced loop schematic diagram of a kind of battery management system described in the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of battery management system, described battery management system comprises battery pack 1, master control borad 2, collection plate 3 and external circuit 4, described master control borad 2 is provided with and discharges and recharges major loop 21 and battery management control modules 22, described collection plate 3 is provided with detection module 31, between described master control borad 2 and collection plate 3, by CAN bus 5, connect, described external circuit 4 is connected with master control borad 2, battery pack 1 by circuit.Above-mentioned design adopts and controls, gathers independently mode, and by using CAN bus communication, isolation gets a promotion, when user's use is the energy-storage system of high-power cascade, by this design, entire system stability will improve greatly, and the reliability of the computing of data, collection, communication has also been improved.
Wherein, described in discharge and recharge and on major loop 21, be in series with 2 MOSFET pipes 211, greatly improved fail safe, once puncture uncontrollable, another MOSFET pipe 211 on loop can cut off safely, to guarantee that battery can super-charge super-discharge, threatens the safety of personal property; The described major loop that discharges and recharges is provided with one group of current sample module 212, and sampling precision reaches 0.25%, and during the raw fault that prevents that riches all the way, a test point can be measured by a continual electric current to system in addition, at any time the situation of supervisory circuit; The described major loop that discharges and recharges is provided with DC power supply output module 213, is generally 12V or the output of 24V DC power supply, can when requiring to add a little skinny device, serve as the effect of stabilized voltage power supply, does not need independently power supply of additional designs; Described battery management control modules comprises a usb interface module 221, when battery deep discharge, in order not allow battery continue electric discharge, adopt the voltage-activated master control borad of a USB DC5V, controlling MOSFET pipe closure charges the battery, can also communicate with host computer, play the effect of monitoring simultaneously; Described battery management control modules is also provided with 4 digital quantity input channels and 8 digital quantity output channels, when system is used in large-scale energy-storage system, may with the device talk of upper level or next stage, can prevent when CAN bus breaks down, some critical datas are not transmitted and are caused misoperation in time, guarantee whole system property safe and reliable to operation; Described detection module 31 is included in temperature detecting module 311 and the temperature detecting module 214 on the MOSFET of major loop pipe on each cell, each batteries is carried out separately to temperature sampling, and also increased by 2 groups of temperature sampling modules on the MOSFET pipe 211 discharging and recharging on major loop 21, thereby the blind area of having cleared away excess Temperature; Described detection module 31 is included in total voltage detection module 43 on voltage detection module 312 on each cell and major loop, the sampling and measuring of monomer voltage summation and stagnation pressure has been used respectively in this design, and respectively these two groups of data are compared by software is continual, when unit interval internal pressure differences reaches certain value, master control will be pointed out alarm signal, object is the judgement to external circuit 4 faults, the fault that prevent that cable is loosening, virtual connection and other reasons causes; Described external circuit 4 is provided with fuse 41 and air switch 42, described detection module 31 is included in the voltage detection module 44 at described fuse 41 and air switch 42 two ends, can, can judge in time out of order reason when external circuit breaks down, find out fault point; Described battery pack 1 is lithium battery group, comprise some cells and balanced loop 11, described balanced loop 11 is the series circuit of cell, resistance, switch composition, the equalizer switch place in described balanced loop 11 is provided with alarm module 111, once switch breaks down, will warning reminding user, breaking down in balanced loop, can get rid of in time.In actual applications, described balanced loop 11 can be and with battery, is connected the loop of an electric capacity with a plurality of switches, grading control battery by a plurality of switches carries out equilibrium to capacitor charge and discharge, and balanced safety system is improved, and has avoided the heating power consumption of resistance simultaneously.
The advantage that the utility model is implemented: by adopting master control borad and collection plate independent, with by CAN bus, carry out the mode of communication, isolation gets a promotion, by this scheme, entire system stability improves greatly, and the reliability of the computing of data, collection, communication is also improved; Discharge and recharge the method that adopts series redundancy MOSFET pipe on major loop, once puncture uncontrollablely, also have the MOSFET pipe of redundancy to carry out safety cut-off, guaranteed that battery can super-charge super-discharge so that not threaten the safety of personal property, greatly improved fail safe.
The above; it is only embodiment of the present utility model; but protection range of the present utility model is not limited to this; the technical staff of any skilled is in the disclosed technical scope of the utility model; the variation that can expect easily or replacement, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of described claim.

Claims (10)

1. a battery management system, it is characterized in that, described battery management system comprises battery pack, master control borad, collection plate and external circuit, described master control borad is provided with and discharges and recharges major loop and battery management control modules, described collection plate is provided with detection module, between described master control borad and collection plate, by CAN bus, connect, described external circuit is connected with master control borad, battery pack by circuit.
2. battery management system according to claim 1, is characterized in that, described in discharge and recharge the MOSFET pipe that major loop is provided with redundancy.
3. battery management system according to claim 2, is characterized in that, described in discharge and recharge major loop and be provided with one group of current sample module.
4. battery management system according to claim 3, is characterized in that, described in discharge and recharge major loop and be provided with DC power supply output module.
5. battery management system according to claim 1, is characterized in that, described external circuit is provided with fuse and air switch, described fuse and air switch two ends be provided with voltage detection module.
6. battery management system according to claim 1, it is characterized in that, described battery pack comprises some cells and balanced return circuit module, and described balanced return circuit module is comprised of cell, resistance, switch, and the switch place of described balanced return circuit module is provided with alarm module.
7. according to the battery management system one of claim 1 to 6 Suo Shu, it is characterized in that, described detection module comprises the temperature detecting module on battery and discharges and recharges the temperature detecting module on the MOSFET pipe of major loop.
8. battery management system according to claim 7, is characterized in that, described detection module comprises total voltage detection module on voltage detection module on battery and major loop.
9. battery management system according to claim 8, is characterized in that, described battery management control modules comprises usb interface module.
10. battery management system according to claim 9, is characterized in that, described battery pack is lithium battery group.
CN201320562095.7U 2013-09-10 2013-09-10 Battery management system Expired - Fee Related CN203456910U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320562095.7U CN203456910U (en) 2013-09-10 2013-09-10 Battery management system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320562095.7U CN203456910U (en) 2013-09-10 2013-09-10 Battery management system

Publications (1)

Publication Number Publication Date
CN203456910U true CN203456910U (en) 2014-02-26

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CN201320562095.7U Expired - Fee Related CN203456910U (en) 2013-09-10 2013-09-10 Battery management system

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104345283A (en) * 2014-11-05 2015-02-11 天津铁路信号有限责任公司 Battery information acquisition unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104345283A (en) * 2014-11-05 2015-02-11 天津铁路信号有限责任公司 Battery information acquisition unit

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Effective date of registration: 20181022

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Termination date: 20190910