CN204886310U - Lithium battery management system based on ARM - Google Patents
Lithium battery management system based on ARM Download PDFInfo
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- CN204886310U CN204886310U CN201520641292.7U CN201520641292U CN204886310U CN 204886310 U CN204886310 U CN 204886310U CN 201520641292 U CN201520641292 U CN 201520641292U CN 204886310 U CN204886310 U CN 204886310U
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Abstract
The utility model provides a lithium battery management system based on ARM, it includes microprocessor unit (1), characterized by microprocessor unit (1) be connected with data acquisition circuit (2), balanced the control unit (3), balanced protected location (4), communication unit (5), data memory cell (6) and host computer monitor cell (7), data after gather data acquisition circuit (2) are sent into microprocessor unit (1) and are calculated and obtain SOC value, whether will carry out equilibrium control and equilibrium protection according to the SOC value judgement of gained again, 485 communications are carried out between through communication unit (5) and host computer in microprocessor unit (1), the voltage current data that will gather and estimate that the SOC value that shows on the host computer, after the charge -discharge, whole number certificate is saved in microprocessor unit (1) at every turn to a judge that SOC's estimation and battery health condition when is used for next charge -discharge. The utility model discloses the self -adaptation management can be realized, the life of battery can be improved.
Description
Technical field
The utility model relates to a kind of battery technology, especially our charging and discharging lithium battery administrative skill, specifically a kind of lithium battery management system based on ARM.
Background technology
As everyone knows, can detect the state of battery pack safely, in time, exactly, be the key factor ensureing battery pack reliability service.The system for managing state of current Li-ion batteries piles mainly when the state of battery pack breaks down to the management system that battery pack is protected, mainly comprise the excessive charge and discharge protecting, overcurrent protection, short-circuit protection, temperature protection etc. to battery pack.Also have some to propose expert diagnostic system, expert diagnostic system is exactly a series of states showed according to battery pack in use procedure, carries out judging and calculating in conjunction with certain rule.The every state parameter current to battery pack is predicted, provides final diagnostic result, expects to find the fault that battery pack is potential in advance.Battery failure Fuzzy Diagnostic System belongs to a part for battery management system equally, it is with the state before battery, the diagnostic result of current state parameter and system last time is foundation, in conjunction with some experience and regularities of storage battery operation and maintenance relevant in database, fuzzy synthesis diagnosis is carried out to battery, provides current state and the maintenance information of battery.In the charge and discharge process of battery pack, the various state parameters of each individual cells all can change.In order to understand and control the state of battery pack more accurately, in the application process of management system, the state of fixing parameter to battery pack can not be adopted to manage, the change of incorporating parametric must adjust control program flexibly, only in this way just can play the performance of battery pack to the full extent.The particularly battery pack phase after cycling, every state parameter makes a big difference with circulation early stage, if management system adopts the control program in circulation early stage always, the battery cyclic later stage can be caused to occur controlling dislocation.Therefore, a battery pack in use vital part is exactly the adaptive optimization of management system, and the management system of battery pack is generally divided into power management system, system for managing state and balanced management system three parts.
Utility model content
The purpose of this utility model is the problem that cannot realize battery status change for existing battery management system and adjust, and designs a kind of lithium battery management system based on ARM that automatically can carry out charge and discharge control according to battery current state and historic state.
The technical solution of the utility model is:
A kind of lithium battery management system based on ARM, it comprises microprocessor unit 1, it is characterized in that described microprocessor unit 1 is connected with data acquisition circuit 2, Balance route unit 3, balance protection unit 4, communication unit 5, data storage cell 6 and host computer monitoring means 7, the analog quantity of ADC module to voltage, electric current and temperature that data acquisition circuit 2 adopts microprocessor unit 1 to carry gathers; Data after collection are sent into microprocessor unit 1 and are carried out calculating SOC value, judge whether to carry out Balance route and balance protection according to the SOC value of gained again, when occurring that in battery pack, electric quantity of single batteries is inconsistent, open Balance route unit 3, microprocessor unit 1 output pulse width modulation waveform is for the break-make of control MOSFET, put if there is overcharging or crossing, microprocessor unit 1 starts balance protection unit 4, disconnects the switching tube in battery major loop; The electric current and voltage data collected and the SOC value estimated, by carrying out 485 communications between communication unit 5 and host computer, host computer show by microprocessor unit 1; After each discharge and recharge terminates, microprocessor unit 1 stores all data, for use in the estimation of SOC during next discharge and recharge and the judgement of cell health state.
Described microprocessor unit 1 is 32 STM32F103C8T6 microprocessors.
The beneficial effects of the utility model:
The utility model can carry out adaptive control according to current data and historical data to battery charging and discharging, and can store the parameter of each discharge and recharge.
The utility model structure is simple, easy to use, can significantly improve the useful life of battery, and raising automation and self adaptation answer level.
Accompanying drawing explanation
Fig. 1 is system of the present utility model composition structural representation.
Fig. 2 is data acquisition electrical schematic diagram of the present utility model.
Fig. 3 is voltage detecting circuit of the present utility model.
Fig. 4 is software module of the present utility model composition schematic diagram.
Fig. 5 is through the electrical measurement experiment curv figure before and after the equilibrium of the utility model management system.
Wherein: Fig. 5 is a) battery measurement curve chart before non-equilibrium;
Fig. 5 b) be battery measurement curve chart after equilibrium.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As Figure 1-5.
A kind of lithium battery management system based on ARM, it comprises microprocessor unit 1, described microprocessor unit 1 is connected with data acquisition circuit 2, Balance route unit 3, balance protection unit 4, communication unit 5, data storage cell 6 and host computer monitoring means 7, as shown in Figure 1, the analog quantity of ADC module to voltage, electric current and temperature that data acquisition circuit 2 adopts microprocessor unit 1 to carry gathers, as shown in Figure 2; Data after collection are sent into microprocessor unit 1 and are carried out calculating SOC value, judge whether to carry out Balance route and balance protection according to the SOC value of gained again, when occurring that in battery pack, electric quantity of single batteries is inconsistent, open Balance route unit 3, microprocessor unit 1 output pulse width modulation waveform is for the break-make of control MOSFET, put if there is overcharging or crossing, microprocessor unit 1 starts balance protection unit 4, disconnects the switching tube in battery major loop; The electric current and voltage data collected and the SOC value estimated, by carrying out 485 communications between communication unit 5 and host computer, host computer show by microprocessor unit 1; After each discharge and recharge terminates, microprocessor unit 1 stores all data, for use in the estimation of SOC during next discharge and recharge and the judgement of cell health state.
Lithium battery management system of the present utility model is using the 32-bit microprocessor STM32F103C8T6 of ST company as the control core of whole battery management system; With the battery pack of 4 joint ferric phosphate lithium cell compositions for research object, often saving cell rated voltage is 3.2V, and rated capacity is 15.5Ah, and assembled battery total voltage is 12.8V.Whole hardware system mainly comprises: microprocessor unit 1, data acquisition circuit 2, Balance route unit 3, balance protection unit 4, data storage cell 6, communication unit 5, host computer monitoring means 7, overall framework as shown in Figure 1.Data relevant when data sampling circuit is mainly used in gathering battery operated, comprise cell voltage, charging and discharging currents and battery temperature, as Fig. 2.Adopt Differential Input and voltage follower circuit, process the voltage signal being input to microprocessor, as shown in Figure 3, amplifier adopts LM358 chip to the voltage detecting circuit of cell, prime is Differential input circuit, and rear class is a RC filtering process and voltage follower circuit.This circuit design effectively can eliminate energy storage monomer voltage ripple, and can realize impedance matching.
The Software for Design of whole lithium battery management system is as Fig. 4.Software program adopts modularization programming; the module separately debugging of each function; finally be integrated together and debug; they all can adopt prior art to be realized, and each functional module comprises: data sampling module, communication module, SOC algorithm for estimating module, battery balanced module, battery protection module, data memory module and host computer interface module.
Concrete measurement result as shown in Figure 5.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art and is realized.
Claims (2)
1. the lithium battery management system based on ARM, it comprises microprocessor unit (1), it is characterized in that described microprocessor unit (1) is connected with data acquisition circuit (2), Balance route unit (3), balance protection unit (4), communication unit (5), data storage cell (6) and host computer monitoring means (7), the analog quantity of ADC module to voltage, electric current and temperature that data acquisition circuit (2) adopts microprocessor unit (1) to carry gathers; Data after collection are sent into microprocessor unit (1) and are carried out calculating SOC value, judge whether to carry out Balance route and balance protection according to the SOC value of gained again, when occurring that in battery pack, electric quantity of single batteries is inconsistent, open Balance route unit (3), microprocessor unit (1) output pulse width modulation waveform is for the break-make of control MOSFET, put if there is overcharging or crossing, microprocessor unit (1) starts balance protection unit (4), disconnects the switching tube in battery major loop; The electric current and voltage data collected and the SOC value estimated, by carrying out 485 communications between communication unit (5) and host computer, host computer show by microprocessor unit (1); After each discharge and recharge terminates, microprocessor unit (1) stores all data, for use in the estimation of SOC during next discharge and recharge and the judgement of cell health state.
2. the lithium battery management system based on ARM according to claim 1, is characterized in that described microprocessor unit (1) is 32 STM32F103C8T6 microprocessors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520641292.7U CN204886310U (en) | 2015-08-25 | 2015-08-25 | Lithium battery management system based on ARM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520641292.7U CN204886310U (en) | 2015-08-25 | 2015-08-25 | Lithium battery management system based on ARM |
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| Publication Number | Publication Date |
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| CN204886310U true CN204886310U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520641292.7U Expired - Fee Related CN204886310U (en) | 2015-08-25 | 2015-08-25 | Lithium battery management system based on ARM |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931743A (en) * | 2018-10-10 | 2018-12-04 | 北京动力京工科技有限公司 | A kind of high performance battery string detection device and detection method |
| CN110297190A (en) * | 2019-07-24 | 2019-10-01 | 国网河北省电力有限公司邢台供电分公司 | Battery voltage detector, system and detection method |
-
2015
- 2015-08-25 CN CN201520641292.7U patent/CN204886310U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931743A (en) * | 2018-10-10 | 2018-12-04 | 北京动力京工科技有限公司 | A kind of high performance battery string detection device and detection method |
| CN110297190A (en) * | 2019-07-24 | 2019-10-01 | 国网河北省电力有限公司邢台供电分公司 | Battery voltage detector, system and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20180825 |