CN106814332A - A kind of multifunction structure lithium battery interior voltage detecting system - Google Patents
A kind of multifunction structure lithium battery interior voltage detecting system Download PDFInfo
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- CN106814332A CN106814332A CN201710177146.7A CN201710177146A CN106814332A CN 106814332 A CN106814332 A CN 106814332A CN 201710177146 A CN201710177146 A CN 201710177146A CN 106814332 A CN106814332 A CN 106814332A
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- voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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- Measurement Of Current Or Voltage (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention belongs to space technology field, it is related to a kind of multifunction structure lithium battery interior voltage detecting system, including a voltage measurement management module and multiple packet voltage detection modules.The voltage measurement management module is connected with spacecraft platform；Voltage measurement management module connects the two ends of multifunction structure lithium battery by total voltage detection line；Described each packet voltage detection module connects each lithium battery group of multifunction structure lithium battery interior respectively；By controlling line traffic control, each is grouped the power operation that adds of voltage detection module to the voltage measurement management module, and obtains monomer battery voltage data from packet voltage detection module by internal RS485 buses；The voltage measurement management module is by outside RS485 buses by total voltage data and monomer battery voltage data output to spacecraft platform.The present invention is good by being grouped independent each lithium battery group voltage of measurement, flexible configuration, scalability, and the electricity for reducing tested battery is released, and equalization performance is preferable.
Description
Technical field
The invention belongs to space technology field, and in particular to a kind of multifunction structure lithium battery interior voltage detecting system.
Background technology
With the development of space technology, high orbit, high value, long-life Large Spacecraft are proposed to product lightweight
Clear and definite and urgent demand.Multifunction structure technology is by work(such as data processing, thermal control, radiation protection, propulsion, generating and electric power storages
Energy, subsystem or separate unit and spacecraft structure platform organically blend, it is possible to achieve structure, function and material are integrally
Chemical conversion type, eliminates conventional aerospace device bulk redundancy weight and volume, realizes the lightweight of structure.
In the numerous subsystem of spacecraft, (wherein battery section is main group of power subsystem to power subsystem
Into part) and structure subsystem be one of maximum subsystem of spacecraft mass and space accounting.Spacecraft multifunction structure lithium
Battery system uses the multifunction structure lithium battery technology of National University of Defense Technology's recent studies on, with reference to advanced structural vibration reduction skill
Batteries and structure subsystem are carried out integral fusion design by art, composite/solid lithium ion battery technology of preparing,
Realize structure to be merged with the height of power supply, can effectively mitigate spacecraft platform weight and volume, greatly improve spacecraft
Payload ratio, extends the spacecraft life-span, increases the useful space of Large Spacecraft.
In order to monitor the performance of spacecraft multifunction structure lithium battery system internal battery, it is necessary to develop in new battery
Portion's voltage detecting system, to spacecraft multifunction structure lithium battery system in launching phase and in orbit during cell voltage
Data are acquired, store, process and transmit.Due to the particularity of lithium battery itself, it is desirable to detect circuit to battery electric quantity
Harmony influence is small, while the spacecraft platform battery voltage scope that can be gathered is wide, the accuracy of detection to cell voltage is high.And
And the System of voltage acquisition must is fulfilled for rocket platform and rigors of the satellite platform in terms of electromagnetic compatibility and reliability.
The content of the invention
For above-mentioned technical problem, the present invention proposes a kind of multifunction structure lithium battery interior voltage detecting system, is situated between
Before the technical program that continues, multifunction structure lithium battery interior battery is first divided into the lithium battery group of N number of series connection, and single lithium is electric
Pond group is again comprising the M single lithium battery of series connection.Each packet voltage detection module is responsible for the voltage measurement of single lithium battery group, and
Voltage measurement management module is responsible for the detection process of each packet voltage detection module.Concrete technical scheme is as follows：
A kind of multifunction structure lithium battery interior voltage detecting system, including a voltage measurement management module and multiple points
Group voltage detection module.The voltage measurement management module is connected with spacecraft platform, for obtaining power supply and reality needed for work
Now transmitted with the measuring and control data between spacecraft platform；The voltage measurement management module connects many work(by total voltage detection line
The two ends of energy structure lithium battery, the total voltage data for measuring multifunction structure lithium battery；The voltage measurement management module
Each is connected by control line and is grouped voltage detection module, and obtained from packet voltage detection module by internal RS485 buses
Monomer battery voltage data；The voltage measurement management module passes through outside RS485 buses by total voltage data and cell
Spacecraft platform is arrived in voltage data output；Described each packet voltage detection module connects multifunction structure lithium battery interior respectively
Corresponding lithium battery group, the monomer battery voltage for detecting each lithium battery group.
Further, the voltage measurement management module includes data management circuit, power interface circuit, total voltage detection
Circuit, control interface, outside RS485 bus interface circuits and inside RS485 bus interface circuits；The data management electricity
Road connects power interface circuit, total voltage detection circuit, control interface, outside RS485 bus interface circuits and interior respectively
Portion's RS485 bus interface circuits, for the data management being responsible in voltage measurement management module and control function；The power supply connects
The primary power source interface and remote measuring and controlling signaling interface of the input connection spacecraft platform of mouth circuit, output end are connected always respectively
Voltage detecting circuit and data management circuit；The total voltage output of the total voltage detection circuit connection multifunction structure lithium battery
End；The control interface connection packet voltage detection module, power down control signal is added for transmitting；The internal RS485
Bus interface circuit connection packet voltage detection module, for transmission of control signals and voltage data；The outside RS485 buses
Interface circuit connects spacecraft platform, for transmission of control signals and voltage data.
Further, the packet voltage detection module includes power on-off control circuit, DC/DC circuits, monomer voltage
The RS485 bus interface circuits of detection circuit, data management circuit and isolation；The data management circuit connects DC/DC respectively
Circuit, monomer voltage detection circuit, the RS485 bus interface circuits of isolation, are responsible for the data pipe in packet voltage detection module
Reason and control function；Two inputs of the power on-off control circuit connect voltage measurement management module and lithium battery respectively
Group, output end connection DC/DC circuits；The DC/DC circuits are respectively monomer voltage detection circuit and data management circuit is provided
Power supply；M section cells in the monomer voltage detection circuit connection lithium battery group, for measuring monomer battery voltage；Institute
The RS485 bus interface circuits connection voltage measurement management module of isolation is stated, for obtaining required power supply and transmission of control signals
And voltage data.
Further, the RS485 interface circuits of the isolation design circuit using light-coupled isolation.
The beneficial effect obtained using the present invention：Present system is believed by being grouped independent each lithium battery group voltage of measurement
Number, measuring system scale is with good expansibility with flexible configuration；Because each packet voltage detection module need not be adopted
Designed with the resistor voltage divider network in conventional method and compensation resistor network, can avoid being released caused by inequality because of measurement network
Electric quantity of single batteries unbalance；Whether each packet voltage detection module powers up work can individually control, when that need not detect
Can power operation, reduce detection circuit and tested battery electric quantity released；Voltage detection module is respectively grouped by flexible configuration
Plus off-position, can also actively realize between each lithium battery group electric quantity balancing operation.
Brief description of the drawings
Fig. 1 is that present system constitutes structural schematic block diagram；
Fig. 2 is voltage measurement management module theory of constitution block diagram；
Fig. 3 is voltage measurement management module power interface circuit figure；
Fig. 4 is voltage measurement management module data management circuit diagram；
Fig. 5 is packet voltage acquisition module theory of constitution block diagram；
Fig. 6 is power on-off control circuit figure in packet voltage detection module；
Fig. 7 is the RS485 bus communication interface figures with light-coupled isolation in packet voltage detection module.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Multifunction structure lithium battery interior voltage detecting system composition structural schematic block diagram such as Fig. 1 institutes that the present invention is provided
Show, system mainly includes 2 class functional modules：I.e. 1 voltage measurement management module and multiple packet voltage detection modules.Voltage is surveyed
Amount management module possesses the interface function with the primary power source, remote measuring and controlling and RS485 buses of spacecraft platform, the outside boat of input
The primary power source and control instruction of its device platform, at the same by control line connect and be responsible for control and management system inside each
Packet voltage detection module.Voltage measurement management module passes through internal RS485 buses poll and collects each packet voltage detecting
The monomer battery voltage data that module is collected, eventually through RS485 buses to spacecraft platform output voltage data.
Primary power source outside the voltage measurement management module input, and it is converted into internal work power supply；Output control
To being grouped in voltage detection module, the power on-off control circuit for controlling the latter realizes powered up and down operation to signal；Electricity
There is RS485 bus communication links between pressure measuring management module and packet voltage detection module, voltage measurement management module is led to
Cross the bus and send query statement, and receive the monomer battery voltage of each packet voltage detection module feedback.Additionally, the voltage
Measuring management module also has the function of detection multifunction structure lithium battery total voltage.
The packet voltage detection module is electric from tested lithium battery group acquisition work under the control of voltage measurement management module
Source；Each monomer battery voltage in each tested lithium battery group is gathered simultaneously, being uploaded to voltage measurement by RS485 buses manages mould
Block.The multifunction structure lithium battery interior voltage detecting system is mainly used in gathering Multifunction solid polymer lithium battery
Builtin voltage.Lithium battery group to be detected is N groups in the present embodiment, and corresponding packet voltage detection module has N number of, and N is for just
Integer, each lithium battery group is in series by 4 section lithium batteries.During each packet voltage detection module is input into and gathers lithium battery group
The monomer voltage of 4 section lithium batteries, the monomer battery voltage data that inside collects can be by the RS485 buses with light-coupled isolation
Interface, output to voltage measurement management module.The RS485 EBIs are designed using light-coupled isolation, eliminate each packet voltage
The common-mode voltage of detection module is to measurement and the influence for communicating, it is ensured that the safety of data communication.Divide by the way that flexible combination is multiple
Group voltage detection module, is capable of achieving the measurement compared with wide-voltage range.The packet voltage detection module need not gather cell
During voltage, can be controlled by voltage measurement management module, disconnection is connected with the power supply of lithium battery group, reduce tested lithium battery group of releasing
Electricity.
The theory of constitution and annexation of the voltage measurement management module are as shown in Fig. 2 the module includes data pipe altogether
Reason circuit, power interface circuit, total voltage detection circuit, control interface, outside RS485 bus interface circuits and inside
The part of RS485 bus interface circuits 6.
The power interface is responsible for realizing the power supply and observing and controlling interface of voltage measurement management module and outside spacecraft platform,
Its circuit composition is as shown in Figure 3.The input of the power interface is the primary power source of spacecraft platform, and the excessively stream of primary power source is protected
Protective function is by two in parallel protective tube MGA-S-125V-1.4A (labels in figure：F1, F2) and resistance RX21-1W-0.8 Ω (in figure
Label：R) the unequal protection circuit of composition is completed.Plus power-off control relay is from the magnetic latching relay of 165 factories production
2JB2-2-28B, the magnetic latching relay receives the telecommand that external remote control interface sends, and realizes outside primary power source
Loading and opening operation, while the on off operating mode switch of relay can connect the telemetry interface of outside, feddback relay device break-make shape
The telemetered signal of state.Primary power source through the electromagnetism interference (EMI) of surge restraint circuit and IR by after relay switch, filtering
Device AME280461X (power-supply filter), sends into DC/DC, and primary power source is transformed into total voltage detection circuit and data management electricity
Secondary power supply needed for road, output voltage includes+5V ,+12V and -12V.
The data management circuit is mainly responsible for data management and control function in whole voltage measurement management module.Its
Input power interface circuit conversion after secondary power supply, to total voltage detection circuit output control and collection signal, and receive from
The total voltage data signal of total voltage detection circuit output, it receives total from internal RS485 bus interface circuits and outside RS485
The voltage and control data of interface circuit forwarding, while adding power-off to control interface output grouping voltage detection module
Control signal.In embodiment, data management circuit function block diagram is as shown in figure 4, be to be with NXP companies LPC2294HBD144/01
The ARM fundamental systems of core；It mainly constitutes including ARM controller, resets and watchdog circuit, clock circuit, encoded control
Circuit, SRAM/PROM data storage circuitries etc., physical circuit annexation is as shown in Figure 4.House dog control chip is
MAX706R, SRAM are that RENESAS companies produce chip R1LV1616RSA-5SI.All selection chips are respectively provided with flight experience.
The total voltage detection circuit mainly realizes the detection operation to outside lithium battery group total voltage, its internal realization electricity
Resistance partial pressure and analog-to-digital conversion (ADC) operation, its input are secondary power supply, the data management circuit after power interface circuit conversion
The total voltage signal of acquisition control signal and outside lithium battery group, exports the total voltage data signal after AD collections to data management
Circuit., from 12 ADC chip AD7892 that conversion time is 2 μ s, can meet 10 sampling precisions will for modulus conversion chip
Ask.
The outside RS485 bus interface circuits and inside RS485 interface circuits are using LINEAR companies
LTC485MJ8 communication control chips, realize and connect the data communication of RS485 bus nodes.But inside RS485 EBIs
Circuit need to export the power supply of+5V all the way, the light-coupled isolation for driving RS485 bus interface circuits in packet voltage detection module
Telecommunication circuit.
The packet voltage detection module mainly gathers the monomer battery voltage of lithium battery group, and by RS485 buses
Voltage measurement management module is transmitted to, its composition is as shown in figure 5, mainly include power on-off control circuit, DC/DC circuits, monomer
The RS485 bus interface circuits of voltage detecting circuit, data management circuit and isolation.Lithium battery group i represents i-th lithium battery
Group, the total voltage of 1≤i≤N, lithium battery group i is only used for providing working power, packet electricity for corresponding packet voltage detection module
Pressure detection module need not gather the total voltage of lithium battery group i.
Data management circuit in the packet voltage detection module is mainly responsible for data management and control function, its from
Power supply needed for DC/DC circuit input services, control monomer voltage detection circuit collection monomer battery voltage, and control isolation
RS485 bus interface circuits are realized communicating with the voltage measurement management module on upper strata, and it is mainly constituted as shown in figure 4, no longer going to live in the household of one's in-laws on getting married
State.
The power on-off control circuit primarily inputs the control signal of voltage measurement management module output, by band light
The control interface of coupling isolation features, realizes outside tested between lithium battery group total voltage and DC/DC plus power-off control.Its circuit
Composition structure is as shown in fig. 6, when needing to provide working power to DC/DC, outside input connects control signal, by optocoupler control
Metal-oxide-semiconductor G1 processed and metal-oxide-semiconductor G2 is turned on, and metal-oxide-semiconductor G3 and metal-oxide-semiconductor G4 disconnects, and now lithium battery group total voltage is loaded directly into DC/DC
Input main track on；When needing to stop power supply, outside input disconnects control signal, optocoupler control metal-oxide-semiconductor G3 and G4 conducting, G1
Disconnected with G2, now the main track of lithium battery group total voltage and DC/DC is disconnected, it can be ensured that detection circuit does not consume lithium battery
The electricity of group.Fuse F3 is mainly for the protection of the not examined short circuit fault impact of lithium battery group.Optocoupler CD1, diode
D1~D4, triode T1 and T2, resistance R1~R8 and electric capacity C1~C5 are mainly used in the realization that auxiliary switch controls circuit.
The DC/DC circuits are mainly used in being input into the total voltage of lithium battery group, needed for output grouping voltage detection module
Power supply.Single lithium battery group in embodiment includes 4 section cells, and total voltage output area is 10V~17V, output voltage
Including+5V ,+12V and -12V.
The monomer voltage detection circuit mainly selects an analog switch, follower and mould by 4 road differential amplifier circuits, multichannel
Number change-over circuit composition.Differential amplifier circuit is using Low Drift Temperature, low imbalance, low-power consumption, high accuracy, high cmrr instrument fortune
Put AD620 to build, the monomer battery voltage of lithium battery group is input to AD620, and makees differential mode and common mode filtering measure treatment
Afterwards by the range of voltage-regulation to 0V~5V.The switch of multiselect one constitutes two grades of gating nets of multiselect one using analog switch HI-546
Network, realizes the logic of multiselect one.Amplify/follow circuit from high resistant, the amplifier OP-27 of the low drift zero in broadband, to ensure to input
Signal high impedance insulation request, is mainly used to provide low output impedance, the input signal of big driving force for ADC.Analog-to-digital conversion
(ADC) chip equally selects AD7892, meets 10 sampling precision requirements.
The total interface circuits of RS485 with isolation mainly realize being grouped the voltage measurement pipe on voltage detection module and upper strata
RS485 bus communications between reason module, its composition is as shown in the circuit on the left of Fig. 7 dotted lines.7 right sides are voltage measurement pipe in figure
Manage the inside RS485 bus interface circuit figures of module.The serial communication interface RX_A and TX_A of data management circuit pass through optocoupler
CD2, optocoupler CD3 and RS485 bus communication control chip LTC485 are communicated.Due to+5V power supplys (the label in figure of LTC485
For：+ 5V_B) provided by the voltage measurement management module on upper strata, and the power supply+5V_A at serial ports end realizes physical isolation,
And the ground wire GND_A and GND_B of the two are also isolation, therefore isolate communication while the non-co- between two generic modules can be realized, really
The safety of Bao Liaoge roads communication.Resistance R1~R14 in circuit is mainly used in realizing Phototube Coupling interface function and the impedance that communicates
Matching feature.
The above is only the preferred embodiment of the present invention, for those skilled in the art,
Without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should be regarded as this hair
Bright protection domain.
Claims (4)
1. a kind of multifunction structure lithium battery interior voltage detecting system, it is characterised in that：Including a voltage measurement management mould
Block and multiple packet voltage detection modules, the voltage measurement management module is connected with spacecraft platform, for obtaining work institute
The measuring and control data between power supply and realization and spacecraft platform is needed to transmit；The voltage measurement management module is detected by total voltage
Line connects the two ends of multifunction structure lithium battery, the total voltage data for measuring multifunction structure lithium battery；The voltage is surveyed
Amount management module connects each and is grouped voltage detection module by control line, and is examined from packet voltage by internal RS485 buses
Survey module and obtain monomer battery voltage data；The voltage measurement management module passes through outside RS485 buses by total voltage data
With monomer battery voltage data output to spacecraft platform；Described each packet voltage detection module connects multifunction structure respectively
Each lithium battery group of lithium battery interior, the monomer battery voltage for detecting each lithium battery group.
2. a kind of multifunction structure lithium battery interior voltage detecting system as claimed in claim 1, it is characterised in that：The electricity
Pressure measuring management module includes data management circuit, power interface circuit, total voltage detection circuit, control interface, outside
RS485 bus interface circuits and inside RS485 bus interface circuits；The data management circuit connects power interface electricity respectively
Road, total voltage detection circuit, control interface, outside RS485 bus interface circuits and inside RS485 bus interface circuits,
For the data management being responsible in voltage measurement management module and control function；The input connection boat of the power interface circuit
The primary power source interface of its device platform and remote measuring and controlling signaling interface, output end connect total voltage detection circuit and data pipe respectively
Reason circuit；The total voltage detection circuit connects the total voltage interface of multifunction structure lithium battery；The control interface connects
Packet voltage detection module is connect, power down control signal is added for transmitting；The internal RS485 bus interface circuits connection packet electricity
Pressure detection module, for transmission of control signals and voltage data；The outside RS485 bus interface circuits connection spacecraft is put down
Platform, for transmission of control signals and voltage data.
3. a kind of multifunction structure lithium battery interior voltage detecting system as claimed in claim 1, it is characterised in that：Described point
Group voltage detection module include power on-off control circuit, DC/DC circuits, monomer voltage detection circuit, data management circuit and
The RS485 bus interface circuits of isolation；The data management circuit connect respectively DC/DC circuits, monomer voltage detection circuit, every
From RS485 bus interface circuits, be responsible for packet voltage detection module in data management and control function；The power switch
Control two inputs of circuit connect voltage measurement management module and lithium battery group, output end connection DC/DC circuits respectively；It is described
DC/DC circuits are respectively monomer voltage detection circuit and data management circuit provides power supply；The monomer voltage detection circuit connects
The cell in lithium battery group is connect, for measuring monomer battery voltage；The RS485 bus interface circuits connection electricity of the isolation
Pressure measuring management module, for obtaining required power supply and transmission of control signals and voltage data.
4. a kind of multifunction structure lithium battery interior voltage detecting system as claimed in claim 1, it is characterised in that：It is described every
From RS485 bus interface circuits using light-coupled isolation design.
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| CN201710177146.7A CN106814332A (en) | 2017-03-23 | 2017-03-23 | A kind of multifunction structure lithium battery interior voltage detecting system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387785A (en) * | 2018-12-05 | 2019-02-26 | 东莞博力威电池有限公司 | A kind of single-unit System of voltage acquisition of multi-string battery group |
| CN109507607A (en) * | 2018-10-29 | 2019-03-22 | 国家电网有限公司 | Portable storage battery group voltage acquisition instrument |
| CN109884549A (en) * | 2019-01-22 | 2019-06-14 | 东莞博力威电池有限公司 | Series-connected cell group monomer voltage detection method based on stm32 |
| CN111123130A (en) * | 2019-12-25 | 2020-05-08 | 北京空间飞行器总体设计部 | Satellite lithium ion battery voltage telemetering health on-orbit autonomous diagnosis method |
| CN112816886A (en) * | 2020-12-22 | 2021-05-18 | 深圳供电局有限公司 | DC standby power supply monitoring system |
| CN112858786A (en) * | 2020-12-31 | 2021-05-28 | 广州鲁邦通物联网科技有限公司 | Modular resistance voltage measuring device and method |
| CN114035063A (en) * | 2021-12-13 | 2022-02-11 | 中国核动力研究设计院 | Voltage monitoring device for reactor storage battery pack |
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| CN109507607A (en) * | 2018-10-29 | 2019-03-22 | 国家电网有限公司 | Portable storage battery group voltage acquisition instrument |
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| CN109884549A (en) * | 2019-01-22 | 2019-06-14 | 东莞博力威电池有限公司 | Series-connected cell group monomer voltage detection method based on stm32 |
| CN111123130A (en) * | 2019-12-25 | 2020-05-08 | 北京空间飞行器总体设计部 | Satellite lithium ion battery voltage telemetering health on-orbit autonomous diagnosis method |
| CN112816886A (en) * | 2020-12-22 | 2021-05-18 | 深圳供电局有限公司 | DC standby power supply monitoring system |
| CN112858786A (en) * | 2020-12-31 | 2021-05-28 | 广州鲁邦通物联网科技有限公司 | Modular resistance voltage measuring device and method |
| CN114035063A (en) * | 2021-12-13 | 2022-02-11 | 中国核动力研究设计院 | Voltage monitoring device for reactor storage battery pack |
| CN114035063B (en) * | 2021-12-13 | 2024-04-30 | 中国核动力研究设计院 | Voltage monitoring device for reactor storage battery pack |
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Application publication date: 20170609 |