CN206908325U - It is a kind of that system is protected by light-coupled isolation software and hardware cooperating novel lithium battery group - Google Patents

It is a kind of that system is protected by light-coupled isolation software and hardware cooperating novel lithium battery group Download PDF

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Publication number
CN206908325U
CN206908325U CN201720571550.8U CN201720571550U CN206908325U CN 206908325 U CN206908325 U CN 206908325U CN 201720571550 U CN201720571550 U CN 201720571550U CN 206908325 U CN206908325 U CN 206908325U
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China
Prior art keywords
microcontroller
battery
detection module
lithium battery
module
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Expired - Fee Related
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CN201720571550.8U
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Chinese (zh)
Inventor
颜宋宋
王文武
吴友爱
孙甲丽
李紫薇
陈思琪
林珊珊
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Anhui Normal University
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Anhui Normal University
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Priority to CN201720571550.8U priority Critical patent/CN206908325U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

System is protected by light-coupled isolation software and hardware cooperating novel lithium battery group the utility model discloses one kind,Including microcontroller and electric power detection module,The data terminal of the microcontroller is connected with the control port of electric power detection module,The AD collection pins of the microcontroller also electrically connect lithium battery group,The output end of the microcontroller is connected with battery privacy protection chip,The output end of the microcontroller is also connected by its internal CAN with computer,The output end of the microcontroller is also associated with human-computer interaction module,The input of the electric power detection module also electrically connect Hall current detection module,Battery voltage is gathered using the technology of light-coupled isolation,While accurate collection battery information,Ensure system worked well operation,Software detection battery status is realized by the thinking of software and hardware combining,Software and hardware mating protection lithium electricity group charging/discharging function.

Description

It is a kind of that system is protected by light-coupled isolation software and hardware cooperating novel lithium battery group
Technical field
Lithium electricity group protection systems technology field is the utility model is related to, is specially that one kind is coordinated by light-coupled isolation software and hardware The novel lithium battery group that works protection system.
Background technology
In the severe change in face of global climate, pure electric automobile turns into the Main way of automobile industry future development, and The principal element for influenceing Development of Electric Vehicles is the lithium battery of its power source.It is safe and stable, normal in order to ensure electric automobile Operation is, it is necessary to which carry out that necessary control and management allows it to keep good performance and extend it to battery uses the longevity Life.So it is rationally very important to electric automobile using battery.However, obtaining battery dump energy accurately and in time is The main aspect for being controlled and managing to battery.Because the number of battery dump energy is directly reflected residing for battery State, the continual mileage of electric automobile can be predicted by it, avoid the super-charge super-discharge of battery, between balancing battery performance not Uniformity, so as to ensure that the safe and stable operation of electric automobile, but existing lithium electricity organizes protection technique, is substantially all use The processing scheme of soft or hard separation, so handle design it is easy but there is during the error of hardware circuit detection signal, BMS System can not make corresponding misarrangement prompting and processing.
The content of the invention
To achieve the above object, the utility model provides following technical scheme:One kind is coordinated by light-coupled isolation software and hardware The novel lithium battery group that works protection system, including microcontroller, the microcontroller are directly powered by power module, the micro-control The data terminal of device processed is connected with the control port of electric power detection module, and the AD collection pins of the microcontroller are also electrically connected Then lithium battery group, the power end of the microcontroller electrically connect power module, the output end and battery of the microcontroller Privacy protection chip is connected, and the output end of the microcontroller is also connected by its internal CAN with computer Connect, the output end of the microcontroller is also associated with human-computer interaction module, and the human-computer interaction module is internally provided with OLED Liquid crystal display and keyboard, the input of the electric power detection module also electrically connect Hall current detection module, the electric power detection The output end of module is connected with LED display module.
As a kind of preferable technical scheme of the utility model, the periphery of the electric power detection module is provided with voltage conversion electricity Road and chip temperature detection circuit.
As a kind of preferable technical scheme of the utility model, NBCZX7- is provided with the Hall current detection module 500 direct current Hall sensors and battery discharge current detection circuit, the input connection of the battery discharge current detection circuit Lithium battery group, the output end connection direct current Hall sensor of the battery discharge current detection circuit, the direct current hall sensing The signal input part of the output end connection electric power detection module of device.
As a kind of preferable technical scheme of the utility model, the input of the microcontroller is also associated with external temperature Detection module.
Compared with prior art, the beneficial effects of the utility model are:Should be new by light-coupled isolation software and hardware cooperating Type lithium electricity group protection system, is provided with microcontroller, and microcontroller uses MKL26Z256VLL4 single-chip microcomputers as system core Piece, DS2788 is coordinated to coordinate special lithium battery to protect by the use of MKL26Z256VLL4 single-chip microcomputers as System on Chip/SoC and its peripheral circuit Protect the software and hardware combining electric quantity of lithium battery management system of chip 7276;Battery voltage is gathered using the technology of light-coupled isolation, it is accurate Really while collection battery information, ensure system worked well operation, software detection is realized by the thinking of software and hardware combining Battery status, software and hardware mating protection lithium electricity group charging/discharging function.
Brief description of the drawings
Fig. 1 is the utility model structure diagram;
Fig. 2 is the utility model electric power detection module connection diagram;
Fig. 3 is the utility model electric power detection module circuit diagram.
In figure:1- microcontrollers;2- power modules;3- electric power detection modules;4- lithium battery groups;5- external temperatures detect mould Block;6- battery privacy protection chips;7-CAN communication modules;8- computers;9-OLED liquid crystal displays;10- human-computer interaction modules; 11- keyboards;12- voltage conversion circuits;13- chip temperatures detect circuit;14- Hall current detection modules;15- current detectings electricity Road;16- direct current Hall sensors;17-LED display modules.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belong to the scope of the utility model protection.
Embodiment:
Fig. 1 to Fig. 3 is referred to, the utility model provides a kind of technical scheme:One kind is coordinated by light-coupled isolation software and hardware The novel lithium battery group that works protection system, including microcontroller 1, the microcontroller 1 are mono- using main control chip MKL26Z256VLL4 Piece machine is directly powered as System on Chip/SoC, the microcontroller 1 by power module 2, the data terminal of the microcontroller 1 with The control port of electric power detection module 3 is connected, and the AD collection pins inside the microcontroller 1 also electrically connect lithium battery group 4, the power end of the microcontroller 1 electrically connect power module 2, output end and the battery privacy protection of the microcontroller 1 Chip 6 is connected, and the output end of the microcontroller 1 is also connected by its internal CAN 7 with computer 8, The computer 8, which is connected on one-chip computer module, to be used for reception system detection information and preserves information, and query history information is described The output end of microcontroller 1 is also associated with human-computer interaction module 10, and the human-computer interaction module 10 is internally provided with OLED liquid Crystalline substance screen 9 and keyboard 11, by controlling OLED liquid crystal screen 9 and keyboard 11 to be used for display information, input instruction, the electric power detection mould The input of block 3 also electrically connect Hall current detection module 14, and output end and the LED of the electric power detection module 3 show mould Block 17 is connected.
Preferably, the periphery of the electric power detection module 3 is provided with voltage conversion circuit 12 and chip temperature detection circuit 13;NBCZX7-500 direct currents Hall sensor 16 and battery discharge current detection electricity are provided with the Hall current detection module 14 Road 15, the input connection lithium battery group 4 of the battery discharge current detection circuit 15, the battery discharge current detect circuit 15 output end connection direct current Hall sensor 16, the output end connection electric power detection module 3 of the direct current Hall sensor 16 Signal input part;The input of the microcontroller 1 is also associated with external temperature detection module 5, the external temperature detection Module 5, which is connected on one-chip computer module, to be used for detecting external temperature.
The battery privacy protection chip 6 uses 7276 series of processes chips, inside battery privacy protection chip 6 when Start when any monomer voltage is higher than preset voltage value and overcharge protection, with locking and unblock;When any monomer voltage is less than pre- If starting Cross prevention during magnitude of voltage, with locking and unblock;Start overcurrent protection when discharge current is higher than pre-set current value, With locking and unblock;The parameters such as real-time voltage, electric current, SOC, temperature are sent to outside accepting device;Opened by external light current Close whether control battery pack has output;The system dormancy when outside connected switch disconnects;When connecting charger, no matter external control is opened Closing can not discharge but can communicate in which kind of state;Read when duty history record built in system is for needing after sale etc., with The history service condition of electrolytic cell group.
Specifically used mode and advantage:System, bag should be protected by light-coupled isolation software and hardware cooperating novel lithium battery group Main control chip MKL26Z256VLL4 single-chip microcomputers are included as System on Chip/SoC, electric power detection module, are selected in electric power detection module DS2788 chips, the periphery of DS2788 chips are provided with voltage conversion circuit and chip temperature detection circuit;Hall current detects mould Block, one-chip computer module, LED display module and power module, DS2788 electric power detection modules connect with Hall current detection module It is used for detecting the electricity and discharge current of lithium battery, the signal output part connection of Hall current detection module on lithium battery The input of DS2788 modules, DS2788 electric power detection modules connection one-chip computer module are used for exporting detection data to single-chip microcomputer mould Block, LED display module, which is connected to, is used for the electricity current data for showing lithium battery, power module connecting tube in DS2788 modules Each electrical module in reason system provides electric energy and supported, and supports MKL26Z256VLL4 single-chip microcomputers as in System on Chip/SoC CAN communication function realize for system charge information and the real-time collection of warning message and the function of communication with the outside world, profit DS2788 is coordinated to coordinate special Li battery protection IC by the use of MKL26Z256VLL4 single-chip microcomputers as System on Chip/SoC and its peripheral circuit 7276 software and hardware combining electric quantity of lithium battery management system;Battery voltage, accurate collection are gathered using the technology of light-coupled isolation While battery information, ensure system worked well operation, software detection battery shape is realized by the thinking of software and hardware combining State, software and hardware mating protection lithium electricity group charging/discharging function.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and And in the case of without departing substantially from spirit or essential attributes of the present utility model, it can realize that this practicality is new in other specific forms Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation Involved claim.

Claims (5)

1. a kind of protect system by light-coupled isolation software and hardware cooperating novel lithium battery group, it is characterised in that:Including microcontroller Device (1), the microcontroller (1) are directly powered by power module (2), and data terminal and the electricity of the microcontroller (1) are examined The control port for surveying module (3) is connected, and the internal AD collection pins of the microcontroller (1) also electrically connect lithium battery group (4), the power end of the microcontroller (1) electrically connect power module (2), the output end and battery of the microcontroller (1) Privacy protection chip (6) is connected, and the output end of the microcontroller (1) also passes through its internal CAN (7) and meter Calculation machine (8) is connected, and the output end of the microcontroller (1) is also associated with human-computer interaction module (10), the man-machine interaction mould Block (10) is internally provided with OLED liquid crystal screen (9) and keyboard (11), and the input of the electric power detection module (3) also electrically connects Hall current detection module (14), the output end of the electric power detection module (3) is connected with LED display module (17).
2. one kind according to claim 1 protects system by light-coupled isolation software and hardware cooperating novel lithium battery group, its It is characterised by:The periphery of the electric power detection module (3) is provided with voltage conversion circuit (12) and chip temperature detection circuit (13).
3. one kind according to claim 1 protects system by light-coupled isolation software and hardware cooperating novel lithium battery group, its It is characterised by:NBCZX7-500 direct currents Hall sensor (16) and battery discharge are provided with the Hall current detection module (14) Current detection circuit (15), the input connection lithium battery group (4) of the battery discharge current detection circuit (15), the battery Discharge current testing circuit (15) output end connection direct current Hall sensor (16), the direct current Hall sensor (16) it is defeated Go out the signal input part of end connection electric power detection module (3).
4. one kind according to claim 1 protects system by light-coupled isolation software and hardware cooperating novel lithium battery group, its It is characterised by:The input of the microcontroller (1) is also associated with external temperature detection module (5).
5. one kind according to claim 1 protects system by light-coupled isolation software and hardware cooperating novel lithium battery group, its It is characterised by:The microcontroller (1) is using main control chip MKL26Z256VLL4 single-chip microcomputers as System on Chip/SoC.
CN201720571550.8U 2017-05-22 2017-05-22 It is a kind of that system is protected by light-coupled isolation software and hardware cooperating novel lithium battery group Expired - Fee Related CN206908325U (en)

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CN201720571550.8U CN206908325U (en) 2017-05-22 2017-05-22 It is a kind of that system is protected by light-coupled isolation software and hardware cooperating novel lithium battery group

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CN206908325U true CN206908325U (en) 2018-01-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110380474A (en) * 2019-07-16 2019-10-25 深圳市菱奇半导体有限公司 Battery protection controller and battery charge/discharge protection circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110380474A (en) * 2019-07-16 2019-10-25 深圳市菱奇半导体有限公司 Battery protection controller and battery charge/discharge protection circuit

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Granted publication date: 20180119

Termination date: 20210522