CN208078130U - Multichannel Li-Battery monitor and combo device - Google Patents
Multichannel Li-Battery monitor and combo device Download PDFInfo
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- CN208078130U CN208078130U CN201820480234.4U CN201820480234U CN208078130U CN 208078130 U CN208078130 U CN 208078130U CN 201820480234 U CN201820480234 U CN 201820480234U CN 208078130 U CN208078130 U CN 208078130U
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- Prior art keywords
- multichannel
- microprocessor
- lithium battery
- combo
- circuit
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a kind of multichannel Li-Battery monitors and combo device, including multichannel lithium battery state detection unit, microprocessor, RS485 communication modules and host computer, the lithium battery state detection unit includes voltage detecting circuit, charging and discharging currents detection circuit and temperature sensing circuit, AD conversion unit is set in the microprocessor, the voltage detecting circuit and the charging and discharging currents detection circuit are connect by the AD conversion unit with the microprocessor respectively, the temperature sensing circuit is connect by monobus with the microprocessor, the microprocessor is connect by the RS485 communication modules with the host computer.Compared with the relevant technologies, the utility model has the advantages that：Realize the intelligent combo of lithium battery；With simple in structure, accuracy of detection height；It is powerful using embedded microprocessor and unibus system temperature sensor, simplify the design of peripheral circuit.
Description
Technical field
The utility model is related to technical field of lithium batteries, and in particular to a kind of multichannel Li-Battery monitor and combo device.
Background technology
Generation of electricity by new energy energy storage, railway power supply, high-performance UPS backup power supplies, communication base station, inverter energy storage system
System, intelligent meter data recording system, new-energy automobile all common lithium battery such as power battery as energy-storage units, the rise in these markets
With develop into lithium battery and Li-Battery monitor provides the huge market space and development prospect.
In the related art, frequently with the lithium battery group of multiple lithium battery connection in series-parallel composition, it is desirable that each single lithium battery
Performance it is close, the lithium battery of similar performance is subjected to combo.Because the uniformity of each single lithium battery is inconsistent, technical parameter
(voltage, capacity, internal resistance etc.) difference is larger and influences combo, further causes the ohmic polarization impedance of inside battery, Yi Jican
Add the difference of the transfer impedance of cell reaction material, if difference is too big, necessarily lead to when battery pack works, each single battery is real
When voltage distribution it is uneven, cause overcharging or overdischarging so that battery pack performance deteriorates, if capacity declines, cycle life
The problems such as sharp-decay, What is more can influence the safe handling of lithium ion battery.Conventional method is using artificial relatively lithium battery
Characteristic, the lithium battery of similar performance is then subjected to combo, the artificial combo of traditional lithium battery is solved and works heavy, efficiency
Low problem.
Accordingly, it is desirable to provide a kind of new multichannel Li-Battery monitor and combo device are to solve the above technical problems.
Utility model content
The purpose of this utility model is to provide a kind of multichannel Li-Battery monitor and combo device, realizes that lithium battery intelligent is matched
It sets so that the work of lithium battery combo is simple, efficient.
To achieve the goals above, the technical solution of the utility model is as follows：
A kind of multichannel Li-Battery monitor and combo device, including multichannel lithium battery state detection unit, microprocessor,
RS485 communication modules and host computer, the lithium battery state detection unit include voltage detecting circuit, charging and discharging currents detection
Circuit and temperature sensing circuit set AD conversion unit, the voltage detecting circuit and the charge and discharge in the microprocessor
Current detection circuit is connect by the AD conversion unit with the microprocessor respectively, and the temperature sensing circuit passes through single total
Line is connect with the microprocessor, and the microprocessor is connect by the RS485 communication modules with the host computer.
As a kind of improvement of the utility model, the charging and discharging currents detection circuit includes for charging and discharging lithium battery
The Hall current sensor that current signal is detected.
As a kind of improvement of the utility model, the Hall current sensor is ACS712 Hall current sensors.
As a kind of improvement of the utility model, the temperature sensing circuit uses unibus system temperature sensor.
As a kind of improvement of the utility model, the unibus system temperature sensor is DS18B20 temperature sensors.
As a kind of improvement of the utility model, the multichannel Li-Battery monitor and combo device further include with described in multichannel
Lithium battery state detection unit and the accessory power supply of microprocessor connection.
As a kind of improvement of the utility model, the accessory power supply offer+5V and+3.3V voltages.
As a kind of improvement of the utility model, the microprocessor is STM32F207VC embedded microprocessors.
As a kind of improvement of the utility model, the voltage detecting circuit carries out voltage sample using differential mode method.
Compared with the relevant technologies, multichannel Li-Battery monitor provided by the utility model has following beneficial with combo device
Effect：
(1) voltage, charging and discharging currents and temperature of multichannel lithium battery can be detected, and sent data to upper
After machine carries out comprehensive analysis, the quality of rapid identification lithium battery performance realizes the intelligent combo of lithium battery；
(2) there is simple in structure, accuracy of detection height, realize the automatic lithium battery combo of intelligence of host computer, solve tradition
The problem of lithium battery artificial combo work is heavy, inefficiency, improves production efficiency；
(3) embedded microprocessor and unibus system temperature sensor are used, it is powerful, simplify setting for peripheral circuit
Meter；
(4) microprocessor includes 12 analog to digital conversion circuits, can monitor 12 road lithium battery parameters, monitoring variable in real time simultaneously
Greatly, efficient.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, and the accompanying drawings in the following description is only some embodiments of the utility model, for this
For the those of ordinary skill of field, without creative efforts, others are can also be obtained according to these attached drawings
Attached drawing, wherein：
Fig. 1 is the structure diagram of the utility model multichannel Li-Battery monitor and combo device；
Fig. 2 is the circuit diagram of voltage detecting circuit in Fig. 1；
Fig. 3 is the circuit diagram of charging and discharging currents detection circuit in Fig. 1；
Fig. 4 is the circuit diagram of temperature sensing circuit in Fig. 1；
Fig. 5 is the circuit diagram of accessory power supply in Fig. 1；
Fig. 6 is the lithium battery combo flow chart of host computer in Fig. 1.
Component explanation：L1~L2 is inductance；R1~R8, RFIt is resistance；RW1 is adjustable potentiometer；C1~C15 is electricity
Hold；C16~C19 is electrolytic capacitor；D1~D6 is diode；U1A, U1B, U3A, U5A are operational amplifier；U4 is Hall current
Sensor；U6 is temperature sensor；T1 is power transformer；FUSE is fuse；U7 is three-terminal voltage regulator；U8 is three ends
Voltage-stablizer.
Specific implementation mode
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Based on the implementation in the utility model
Example, all other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Referring to Fig. 1, a kind of multichannel Li-Battery monitor of the utility model offer and combo device 100, including multichannel lithium electricity
Pond state detection unit 1, microprocessor 2, RS485 communication modules 3, host computer 4 and accessory power supply 5.The lithium battery state
Detection unit 1, the microprocessor 2, the RS485 communication modules 3 and the host computer 4 are sequentially connected, the auxiliary electricity
Source 5 is electrically connected with the lithium battery state detection unit 1 and the microprocessor 2.
Fig. 1 illustrates lithium battery state detection unit 1 described in the 1st road to the n-th tunnel, wherein n is the natural number not less than 2, institute
It states multichannel Li-Battery monitor and can be realized with combo device 100 and the roads n lithium battery is monitored, monitoring efficiency is greatly improved.Tool
Body, the lithium battery state detection unit 1 includes voltage detecting circuit 10, charging and discharging currents detection circuit 11 and temperature inspection
Slowdown monitoring circuit 12,2 inside setting AD conversion unit 20 of the microprocessor, the voltage detecting circuit 10 and the charging and discharging currents
Detection circuit 11 is connect by the AD conversion unit 20 with the microprocessor 2 respectively, and the temperature sensing circuit 12 passes through
Monobus is connect with the microprocessor 2.
Shown in Fig. 2, the port BAT+ connection lithium battery anodes of the voltage detecting circuit 10, port BAT- connections
Cathode of lithium battery, by inductance L1 common mode chokes, the voltage detecting circuit 10 is sampled using differential mode method, using resistance
Follower, the operational amplifier U1A that R1 and capacitance C1 filtering, diode D1 and diode D2 amplitude limits, operational amplifier U1A are constituted
It is sent after amplification, optocoupler U2 isolation to operational amplifier U3A and amplifies to obtain voltage signal Uout, the voltage signal Uout is sent to institute
State the AD conversion unit 20 of microprocessor 2.
In preferred embodiments of the present invention, the operational amplifier U1A, operational amplifier U1B and described
Operational amplifier U3A is all made of integrated chip LM324, the optocoupler U2 and uses integrated chip PC817A linear optical couplings.
Shown in Fig. 3, the charging and discharging currents detection circuit 11 is using Hall current sensor U4 as lithium electricity
The detecting element of pond group charging and discharging currents signal, current signal is after the Hall sensor U4 is converted to voltage signal, then passes through
Resistance RFVoltage follower, resistance R6 and the capacitance C11 that current limliting, resistance R5 and capacitance C9 filtering, operational amplifier U5A are constituted are filtered
Current signal I is obtained after waveout, the current signal IoutIt send to the AD conversion unit 20 of the microprocessor 2.
In preferred embodiments of the present invention, the Hall current sensor U4 uses integrated chip ACS712,
The operational amplifier U5A uses integrated chip LM324.
Shown in Fig. 4, the temperature sensing circuit 13 uses unibus system temperature sensor U6, specifically, described
Unibus system temperature sensor U6 is DS18B20 temperature sensors, and the output of the unibus system temperature sensor U6 is by electricity
Corresponding temperature signal T is obtained after resistance R7 current limlitingsout, the temperature signal ToutThe microprocessor 2 is inputted by monobus.
Shown in Fig. 5, the accessory power supply 5 can provide+5V voltages and+3.3V voltages, and 220V voltages are through transformation
Device T1 decompression isolation, then become+12V DC electricity, capacitance C13 and electrolytic capacitor C16 filters through diode rectifier bridge D3~D6 rectifications
The links such as wave, adjustable three-terminal voltage regulator U7, electrolytic capacitor C14 and electrolytic capacitor C18 filtering obtain output+5VA (for mould
Quasi- control circuit provides required supply voltage).In order to obtain the supply voltage needed for digital control circuit ,+5VA voltages warp
Inductance L2 obtains+5V voltages (required supply voltage is provided for digital control circuit), and+3.3V voltages can be the microprocessor
2 provide supply voltage, and+5V voltages are through three terminal regulator U8 conversion acquirements+3.3V.
In preferred embodiments of the present invention, the three-terminal voltage regulator U7 models CW317, three end
Voltage-stablizer U8 models AMS1117.
The microprocessor 2 is embedded microprocessor, specifically, being STM32F207VC embedded microprocessors.This reality
It is 32 ARM that ST Microelectronics releases with the STM32F207VC embedded microprocessors of novel offer
Cortex-M4F kernel microcontrollers, have it is small, it is powerful, include 3 12 analog-to-digital conversion (ADC) modules, sample
Rate is up to 2M/s, 3 I2C interface.The STM32F207VC embedded microprocessors as the multichannel Li-Battery monitor with
The slave computer main control chip of configuration device 100, the main voltage signal, charging and discharging currents signal, temperature for completing multichannel lithium battery
The sample detecting of signal and digital signal is converted analog signals into, the microprocessor 2 passes through the RS485 communication modules
3 are connected with the communication of host computer 4.
The host computer 4 uses desktop computer or laptop, the host computer 4 to be communicated by the RS485
Module 3 obtains the lithium battery sampled data information that the microprocessor 2 is sent, complete the preservations of data, data to score
It analyses, the intelligent functions such as combo automatically of lithium battery.
The combo of lithium battery is completed by the host computer 4, realizes the automatic combo of intelligence.For the intelligence to the host computer 4
Can automatic combo be described in detail, now by the 18650 of common lithium ion or LiFePO4 18650 for, single-unit is nominal
Voltage is generally 3.6V or 3.7V；Charging voltage is generally 4.20V；Minimum final discharging voltage is generally 2.75V, is less than this
Voltage is easy to cause battery capacity degradation or even scraps；Maximum charge final voltage is 4.20V.
The automatic combo of intelligence mainly comprises the following steps：
(1) battery for participating in combo is fully charged and is numbered, 12~48 hours are stood after fully charged；
(2) open-circuit voltage of every battery is acquired respectively, and rejects the underproof lithium battery of open-circuit voltage；
(3) it is 2.75~2.8V/ single lithium batteries to preset the average final voltage of electric discharge；
(4) lithium battery carries out discharged in series, and final voltage and the discharge time of every battery are acquired in discharge process, is chosen
The final voltage of equivalent discharge time is that 2.7~2.8V/ single lithium batteries participate in combo；
(5) number of combo battery, final voltage and open-circuit voltage will be participated in correspond, by final voltage it is poor≤
0.06V, the mark of difference in open circuit voltage≤0.01V first press final voltage and sort, press open-circuit voltage on the basis of sorting herein again and arrange
Sequence；
(6) the identical battery of group labelled notation is moved to and is packed together.
Further, the lithium battery combo flow chart of the host computer 4 is as shown in fig. 6, include mainly：Initiating port
Remember with parameter preset, lithium battery openning circuit voltage detection, the detection of lithium battery discharge current, lithium battery voltage and temperature detection, parameter
Record and preserve, parameter fitting compared with, combo is determining, combo list print.
It can be seen that the multichannel Li-Battery monitor provided by the utility model being capable of rapid identification with combo device 100
The quality of lithium battery performance realizes the intelligent combo of lithium battery, has simple in structure, and accuracy of detection is high, solves conventional method
The problem of, inefficiency heavy using lithium battery artificial combo work.
Compared with the relevant technologies, multichannel Li-Battery monitor provided by the utility model has following beneficial with combo device
Effect：
(1) voltage, charging and discharging currents and temperature of multichannel lithium battery can be detected, and sent data to upper
After machine carries out comprehensive analysis, the quality of rapid identification lithium battery performance realizes the intelligent combo of lithium battery；
(2) there is simple in structure, accuracy of detection height, realize the automatic lithium battery combo of intelligence of host computer, solve tradition
The problem of lithium battery artificial combo work is heavy, inefficiency, improves production efficiency；
(3) embedded microprocessor and unibus system temperature sensor are used, it is powerful, simplify setting for peripheral circuit
Meter；
(4) microprocessor includes 12 analog to digital conversion circuits, can monitor 12 road lithium battery parameters, monitoring variable in real time simultaneously
Greatly, efficient.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other relevant technical fields, are equally included in the patent within the scope of the utility model.
Claims (9)
1. a kind of multichannel Li-Battery monitor and combo device, which is characterized in that including multichannel lithium battery state detection unit, Wei Chu
Device, RS485 communication modules and host computer are managed, the lithium battery state detection unit includes voltage detecting circuit, charge and discharge electricity
Current detection circuit and temperature sensing circuit, set AD conversion unit in the microprocessor, the voltage detecting circuit and described
Charging and discharging currents detection circuit is connect by the AD conversion unit with the microprocessor respectively, and the temperature sensing circuit is logical
It crosses monobus to connect with the microprocessor, the microprocessor is connect by the RS485 communication modules with the host computer.
2. multichannel Li-Battery monitor according to claim 1 and combo device, which is characterized in that the charging and discharging currents inspection
Slowdown monitoring circuit includes the Hall current sensor for being detected to charging and discharging lithium battery current signal.
3. multichannel Li-Battery monitor according to claim 2 and combo device, which is characterized in that the Hall current sensing
Device is ACS712 Hall current sensors.
4. multichannel Li-Battery monitor according to claim 1 or 3 and combo device, which is characterized in that the temperature detection
Circuit uses unibus system temperature sensor.
5. multichannel Li-Battery monitor according to claim 4 and combo device, which is characterized in that the unibus system temperature
Sensor is DS18B20 temperature sensors.
6. multichannel Li-Battery monitor according to claim 1 and combo device, which is characterized in that the multichannel lithium battery prison
It further includes the accessory power supply being connect with lithium battery state detection unit described in multichannel and the microprocessor to survey with combo device.
7. multichannel Li-Battery monitor according to claim 6 and combo device, which is characterized in that the accessory power supply provides
+ 5V and+3.3V voltages.
8. multichannel Li-Battery monitor according to claim 1 and combo device, which is characterized in that the microprocessor is
STM32F207VC embedded microprocessors.
9. the multichannel Li-Battery monitor according to claim 1 or 8 and combo device, which is characterized in that the voltage detecting
Circuit carries out voltage sample using differential mode method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480234.4U CN208078130U (en) | 2018-04-04 | 2018-04-04 | Multichannel Li-Battery monitor and combo device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480234.4U CN208078130U (en) | 2018-04-04 | 2018-04-04 | Multichannel Li-Battery monitor and combo device |
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| Publication Number | Publication Date |
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| CN208078130U true CN208078130U (en) | 2018-11-09 |
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| CN201820480234.4U Expired - Fee Related CN208078130U (en) | 2018-04-04 | 2018-04-04 | Multichannel Li-Battery monitor and combo device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534824A (en) * | 2019-07-22 | 2019-12-03 | 大城绿川（深圳）科技有限公司 | A kind of lead-acid accumulator on-line intelligence maintenance system of the RS485 communication based on adaptive networking |
| CN111342087A (en) * | 2020-03-31 | 2020-06-26 | 苏州钧峰新能源科技有限公司 | RMFC control module analysis circuit system for fuel cell power system |
-
2018
- 2018-04-04 CN CN201820480234.4U patent/CN208078130U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534824A (en) * | 2019-07-22 | 2019-12-03 | 大城绿川（深圳）科技有限公司 | A kind of lead-acid accumulator on-line intelligence maintenance system of the RS485 communication based on adaptive networking |
| CN110534824B (en) * | 2019-07-22 | 2022-10-21 | 大城绿川（深圳）科技有限公司 | RS485 communication lead-acid storage battery online intelligent maintenance system based on self-adaptive networking |
| CN111342087A (en) * | 2020-03-31 | 2020-06-26 | 苏州钧峰新能源科技有限公司 | RMFC control module analysis circuit system for fuel cell power system |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181109 Termination date: 20190404 |
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| CF01 | Termination of patent right due to non-payment of annual fee |