CN203352148U - Lithium battery protection system - Google Patents
Lithium battery protection system Download PDFInfo
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- CN203352148U CN203352148U CN 201320426481 CN201320426481U CN203352148U CN 203352148 U CN203352148 U CN 203352148U CN 201320426481 CN201320426481 CN 201320426481 CN 201320426481 U CN201320426481 U CN 201320426481U CN 203352148 U CN203352148 U CN 203352148U
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- ion cell
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Abstract
The utility model discloses a lithium battery protection system comprising a lithium battery interface module, a battery voltage acquisition module, an equalization module, a temperature acquisition module, a display module, a communication module, a current acquisition module, a MOS driving module, a MOS switch module, a power supply module and a MCU module. Compared with conventional products, the lithium battery protection system disclosed in the utility model is more stable, and more comprehensive in protection and the current state of a battery pack can be read in an upper computer; besides, the lithium battery protection system is low in power consumption and low in cost, and meanwhile the stability and security of the battery pack is improved greatly.
Description
Technical field
The utility model discloses a kind of li-ion cell protection system, for energy-storage system and electric automobile, relate to the battery protection field.
Background technology
The use of chemical cell is very extensive; mainly contain lead-acid battery and lithium battery; the anti-over-voltage and over-current ability of lead-acid battery is strong; of short duration overload can not produce serious influence to battery; but the chemical characteristic of lithium battery is very active; if the operating state of lithium battery is not controlled, may produce the disaster that serious consequence even can not estimated.For the lithium battery of more prevalent use, need to carry out omnibearing protection to improve useful life and fail safe.The at present protection of lithium battery is single-unit and simple a few joint protection mostly, and configurability is poor, lacks communication function, and capacity is less, for the general protection of jumbo battery pack, lacks relevant programme and product.
The utility model content
Technical problem to be solved in the utility model is: a kind of large capacity multisection lithium battery protection system is provided, and in order to solve at present, the lithium battery protection board protection is single on the market, and not configurable, capacity is little, and the series connection joint number is few, lacks the problems such as communication function.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
A kind of li-ion cell protection system, comprise lithium battery interface module, cell voltage acquisition module, balance module, temperature collect module, display module, communication module, current acquisition module, MOS driver module, MOS switch module, power module, MCU module; Wherein:
The output of lithium battery interface module is connected with input and the MOS switch module of cell voltage acquisition module, balance module, power module respectively; The output of power module is connected with the MCU module; The output of temperature collect module, current acquisition module, cell voltage acquisition module and balance module is connected with the input of MCU module respectively, and the output of MCU module is connected with display module, communication module, MOS driver module respectively; The MOS driver module is connected with the MOS switch module.
As the present invention further optimization scheme, described power module is the inverse-excitation type switch power-supply that utilizes the design of high-performance fixed frequency current mode controller.
As the present invention further optimization scheme, described MCU module is the pic18f46k22 single-chip microcomputer.
As the present invention further optimization scheme, described cell voltage acquisition module and balance module are all used high-tension battery monitor LTC6803 as control chip.
As the present invention further optimization scheme, described temperature collect module comprises single 8 passage numeral control simulation electronic switch and thermistors.
As the present invention further optimization scheme, described MOS switch module is the N-channel MOS pipe of low internal resistance.
As the present invention further optimization scheme, described display module comprises 8 LED display panels.
Described communication module is for being used 485 communication modules of modbus agreement.
The utility model has multiple protective, comprises overheated, overvoltage, under-voltage, overcurrent, guarantees also to have the passive type equilibrium for the balancing battery capacity under the state of work in a safety of lithium battery, extends the life-span of battery pack.This utility model also has communication function, day by day intelligentized today can allow the user by the devices communicating of battery and other to reach the purpose of a co-ordination.
The accompanying drawing explanation
Fig. 1 is integrated stand composition of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
Integrated stand composition of the present utility model as shown in Figure 1, comprises cell voltage acquisition module, balance module, temperature collect module, display module, communication module, current acquisition module, controls MOS switch module, power module, MCU processing module; The terminal winding displacement of multiple batteries is connected to cell voltage acquisition module, balance module and power module, the battery pack negative pole is connected to controls the MOS switch module, temperature collect module, current acquisition module, voltage acquisition module and balance module are connected to the MCU module, control MOS switch module, display module, communication module after MCU resume module data.
Power module adopts inverse-excitation type (Flyback) Switching Power Supply of high-performance fixed frequency current mode controller (UC3844) design, exports 12v supply MOS driving and uses, and the LDO that meets 5v supplies with other logical circuit uses such as mcu.The MCU module adopts the pic18f46k22 single-chip microcomputer, gathers voltage, electric current, temperature signal, and produces control signal.Cell voltage acquisition module and balance module are responsible for by 2 LTC6803, and precision is high.Temperature collect module adopts single 8 passage numeral control simulation electronic switches (CD4051) to select the thermistor NTC of different passages to measure temperature.The current acquisition module is used milliohm electrical resistance collection current signal.The MOS switch module adopts the N-channel MOS pipe of low internal resistance.Display module is used 8 LED display panels, in order to show dump energy and failure code.Communication module is used 485 communications of modbus agreement.
Before using, prepare: at first the baffle switch cuts out, connect the battery terminal winding displacement to baffle, connect the negative pole of baffle B-to battery, thermistor is placed in power brick.
Use procedure: baffle, with after battery pack is connected, is opened switch, and baffle works on power, and the positive pole of the P-of baffle and battery pack is connected to load or charger two ends, can start working.Once there be the phenomenons such as overheated, overvoltage, under-voltage, overcurrent, baffle immediately cuts off the MOS switch, and the protection battery is in case impaired.LED can show current failure code.Be resolved or fault condition while not meeting in failure problems, automatically recover normal operating conditions, continuation can or receive the charger charging to load discharge.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, may there is local small structural modification in implementation process, if various changes of the present utility model or distortion are not broken away to scope of the present utility model, and, within belonging to the claim and equivalent technologies scope of utility model, the utility model also is intended to comprise these changes and distortion.
Claims (8)
1. a li-ion cell protection system, it is characterized in that, comprise lithium battery interface module, cell voltage acquisition module, balance module, temperature collect module, display module, communication module, current acquisition module, MOS driver module, MOS switch module, power module, MCU module; Wherein:
The output of lithium battery interface module is connected with input and the MOS switch module of cell voltage acquisition module, balance module, power module respectively; The output of power module is connected with the MCU module; The output of temperature collect module, current acquisition module, cell voltage acquisition module and balance module is connected with the input of MCU module respectively, and the output of MCU module is connected with display module, communication module, MOS driver module respectively; The MOS driver module is connected with the MOS switch module.
2. a kind of li-ion cell protection system as claimed in claim 1 is characterized in that: described power module is the inverse-excitation type switch power-supply that utilizes the design of high-performance fixed frequency current mode controller.
3. a kind of li-ion cell protection system as claimed in claim 1, it is characterized in that: described MCU module is the pic18f46k22 single-chip microcomputer.
4. a kind of li-ion cell protection system as claimed in claim 1, it is characterized in that: described cell voltage acquisition module and balance module are all used high-tension battery monitor LTC6803 as control chip.
5. a kind of li-ion cell protection system as claimed in claim 1 is characterized in that: described temperature collect module comprises single 8 passages numeral control simulation electronic switch and thermistors.
6. a kind of li-ion cell protection system as claimed in claim 1, is characterized in that: the N-channel MOS pipe that described MOS switch module is low internal resistance.
7. a kind of li-ion cell protection system as claimed in claim 1, it is characterized in that: described display module comprises 8 LED display panels.
8. a kind of li-ion cell protection system as claimed in claim 1, is characterized in that: 485 communication modules that described communication module is use modbus agreement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320426481 CN203352148U (en) | 2013-07-18 | 2013-07-18 | Lithium battery protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320426481 CN203352148U (en) | 2013-07-18 | 2013-07-18 | Lithium battery protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203352148U true CN203352148U (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320426481 Expired - Fee Related CN203352148U (en) | 2013-07-18 | 2013-07-18 | Lithium battery protection system |
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| Country | Link |
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| CN (1) | CN203352148U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826989A (en) * | 2016-06-01 | 2016-08-03 | 深圳市德兰明海科技有限公司 | Intelligently controlled and balanced battery management system |
| CN112208331A (en) * | 2020-10-12 | 2021-01-12 | 天能帅福得能源股份有限公司 | Safety maintenance switch system for BMS (battery management system) of electric bicycle |
-
2013
- 2013-07-18 CN CN 201320426481 patent/CN203352148U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826989A (en) * | 2016-06-01 | 2016-08-03 | 深圳市德兰明海科技有限公司 | Intelligently controlled and balanced battery management system |
| CN112208331A (en) * | 2020-10-12 | 2021-01-12 | 天能帅福得能源股份有限公司 | Safety maintenance switch system for BMS (battery management system) of electric bicycle |
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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: 20131218 Termination date: 20190718 |