CN204858686U - Lithium battery management system based on FPGA - Google Patents
Lithium battery management system based on FPGA Download PDFInfo
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- CN204858686U CN204858686U CN201520641316.9U CN201520641316U CN204858686U CN 204858686 U CN204858686 U CN 204858686U CN 201520641316 U CN201520641316 U CN 201520641316U CN 204858686 U CN204858686 U CN 204858686U
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Abstract
The utility model provides a lithium battery management system based on FPGA, it includes data acquisition module (1) characterized by, group battery temperature protective film piece (2), balancing control module (3), FPGA data processing module (4) and data disaply moudle (5), the input termination group battery (6) of data acquisition module (1), its output termination FPGA data processing module (4), the output termination data disaply moudle (5) of FPGA data processing module (4), the control end of FPGA data processing module (4) connects group battery temperature protective film piece (2) and balancing control module (3) respectively, the output of group battery temperature protective film piece (2) and balancing control module (3) all links to each other with group battery (6), an operating condition for control batteries. The utility model discloses simple structure makes convenient to use, can increase substantially battery life.
Description
Technical field
The utility model relates to a kind of battery management technique, especially a kind of lithium battery administrative skill, specifically a kind of lithium battery management system based on FPGA.
Background technology
As everyone knows, safe, to detect battery pack in time, exactly state is 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 can only manage and the problem that can not manage the battery in running the battery after breaking down for existing battery management system, designs a kind of lithium battery management system based on FPGA that can manage the state of battery in real time in battery charge and discharge process.
The technical solution of the utility model is:
A kind of lithium battery management system based on FPGA, it is characterized in that it comprises data acquisition module 1, battery pack temperature protection module 2, equalization control module 3, FPGA data processing module 4 and data disaply moudle 5, the input termination battery pack 6 of data acquisition module 1, its output termination FPGA data processing module 4, the output termination data disaply moudle 5 of FPGA data processing module 4, the control end of FPGA data processing module 4 connects battery pack temperature protection module 2 and equalization control module 3 respectively, battery pack temperature protection module 2 is all connected with battery pack 6 with the output of equalization control module 3, for controlling the operating state of battery.
Described data acquisition module 1 is made up of voltage collection circuit 101, current collection circuit 102 and temperature collection circuit 103, and their input is all connected with battery pack 6, and the input that their output is all corresponding with FPGA data processing module 4 is connected.
Clock frequency division module 7 is connected with between described data acquisition module 1 and FPGA data processing module 4.
The beneficial effects of the utility model:
The operating state of the utility model energy Real-Time Monitoring battery; the data such as monomer battery voltage, battery pack global voltage, electric current, temperature of battery pack are detected in real time; to solve in lithium battery group between each cell because there are differences; overcharge in charge and discharge process, mistake is put, the excessively high problem having a strong impact on battery pack useful life of temperature; automatically equilibrium and protection can be carried out; make battery pack in charge and discharge process; voltage can be balanced, within temperature can remain on operating temperature range.
The utility model structure is simple, manufactures easy to use, can increase substantially battery.
Accompanying drawing explanation
Fig. 1 is electric theory diagram schematic diagram of the present utility model.
Fig. 2 is the electrical schematic diagram of voltage collection circuit of the present utility model.
Fig. 3 is the electrical schematic diagram of current collection circuit of the present utility model.
Fig. 4 is the electrical schematic diagram of balance module of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As Figure 1-4.
A kind of lithium battery management system based on FPGA, it comprises data acquisition module 1, battery pack temperature protection module 2, equalization control module 3, FPGA data processing module 4, data disaply moudle 5 and clock frequency division module 7, the input termination battery pack 6 of data acquisition module 1, its output termination FPGA data processing module 4, the output termination data disaply moudle 5 of FPGA data processing module 4, the control end of FPGA data processing module 4 connects battery pack temperature protection module 2 and equalization control module 3 respectively, battery pack temperature protection module 2 is all connected with battery pack 6 with the output of equalization control module 3, for controlling the operating state of battery.Clock frequency division module 7 is connected between data acquisition module 1 and FPGA data processing module 4, as shown in Figure 1.Described data acquisition module 1 can be made up of voltage collection circuit 101, current collection circuit 102 and temperature collection circuit 103, and their input is all connected with battery pack 6, and the input that their output is all corresponding with FPGA data processing module 4 is connected.
Voltage collection circuit 101 is as Fig. 2.Voltage collection circuit detects for four voltages saving the battery pack of lithium batteries series connection, and the collection of battery voltage contains the detection of batteries monomer battery voltage and the detection to battery pack global voltage.By the control of FPGA to switch in the design, the detection to battery pack global voltage can be realized, also can to the voltage detecting of a batteries any in battery pack.The ADC0809 that the AD conversion chip that voltage collection circuit adopts is.
Current collection circuit 102 as shown in Figure 3, connected between battery pack with load the resistance R5 of a 50m, this resistance is mainly used to the discharging current of sampling battery group, the voltage at resistance R5 two ends by being exported by OUT pin in the form of electric current after current sense amplifier MAX4172 amplification, then converts voltage signal to by resistance R6.The last voltage of A/D conversion chip TLC2543 to resistance R6 two ends again gathers.
The circuit of equalization control module 3 is as Fig. 4, C+ and the C-pin of all balance modules is all connected in parallel on same electric capacity.The operation principle of this balancing control circuit is as follows: if when systems axiol-ogy needs to carry out equilibrium to battery, control system sends low level signal to tip1, at this moment the output conducting of photoelectric relay, now battery can pass through divider resistance R5_1, to input high level of triode Q1, triode Q1 conducting, 1,8 two of mechanical relay pin is made to have electric current to input, the action of mechanical relay contact, pin 3,4 conducting of mechanical relay, pin 6,5 conducting, just achieves connecting of battery and electric capacity.If all contact actions of the mechanical relay of two balance modules, by Capacitance parallel connection together, the energy of two batteries also can be shifted by electric capacity two batteries just realized.If contact action does not occur mechanical relay, then disconnect between battery and electric capacity, energy also can not shift.
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 (3)
1. the lithium battery management system based on FPGA, it is characterized in that it comprises data acquisition module (1), battery pack temperature protection module (2), equalization control module (3), FPGA data processing module (4) and data disaply moudle (5), the input termination battery pack (6) of data acquisition module (1), its output termination FPGA data processing module (4), the output termination data disaply moudle (5) of FPGA data processing module (4), the control end of FPGA data processing module (4) connects battery pack temperature protection module (2) and equalization control module (3) respectively, battery pack temperature protection module (2) is all connected with battery pack (6) with the output of equalization control module (3), for controlling the operating state of battery.
2. the lithium battery management system based on FPGA according to claim 1, it is characterized in that described data acquisition module (1) is made up of voltage collection circuit (101), current collection circuit (102) and temperature collection circuit (103), their input is all connected with battery pack (6), and the input that their output is all corresponding with FPGA data processing module (4) is connected.
3. the lithium battery management system based on FPGA according to claim 1, is characterized in that being connected with clock frequency division module (7) between described data acquisition module (1) and FPGA data processing module (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520641316.9U CN204858686U (en) | 2015-08-25 | 2015-08-25 | Lithium battery management system based on FPGA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520641316.9U CN204858686U (en) | 2015-08-25 | 2015-08-25 | Lithium battery management system based on FPGA |
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| Publication Number | Publication Date |
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| CN204858686U true CN204858686U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520641316.9U Expired - Fee Related CN204858686U (en) | 2015-08-25 | 2015-08-25 | Lithium battery management system based on FPGA |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253237A (en) * | 2016-08-10 | 2016-12-21 | 合肥国盛电池科技有限公司 | Novel lithium battery group protection board and lithium battery group |
-
2015
- 2015-08-25 CN CN201520641316.9U patent/CN204858686U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253237A (en) * | 2016-08-10 | 2016-12-21 | 合肥国盛电池科技有限公司 | Novel lithium battery group protection board and lithium battery group |
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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 |
Granted publication date: 20151209 Termination date: 20180825 |
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| CF01 | Termination of patent right due to non-payment of annual fee |