CN107797071A - A kind of anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group - Google Patents
A kind of anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group Download PDFInfo
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- CN107797071A CN107797071A CN201711009193.7A CN201711009193A CN107797071A CN 107797071 A CN107797071 A CN 107797071A CN 201711009193 A CN201711009193 A CN 201711009193A CN 107797071 A CN107797071 A CN 107797071A
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- Prior art keywords
- lithium
- voltage
- ions battery
- battery group
- circuit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention discloses a kind of anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group, and the circuit includes：Voltage isolates acquiring unit, and it uses differential mode to obtain monomer voltage in lithium-ions battery group；Isolated location, its circuit connection voltage are isolated acquiring unit output end, the high pressure and low pressure of lithium-ions battery group are isolated using Magnetic isolation mode；AD conversion unit, its circuit connection isolated location, data signal is converted into by the voltage analog signal of lithium-ions battery monomer；Control unit, its circuit connection AD conversion unit output end, the switching that monomer battery voltage is carried out using switch multiplexing matrix are gated.Electronic component of the present invention all uses aerospace level, for space environment, it can adapt to the high pressure lithium-ions battery group of high rail, middle rail, low orbit spacecraft platform, each anti-interference isolation module is responsible for the anti-interference isolation sampling of some string batteries, ensure that the security of long string lithium ion accumulator battery voltage sampling.
Description
Technical field
The present invention relates to space cell management domain, and in particular to a kind of anti-strong electromagnetic of space lithium-ions battery group
Isolate sample circuit.
Background technology
Chinese invention patent（Publication number：CN104237806A）Disclose a kind of lithium-ions battery group monomer battery voltage
Sampling apparatus includes：Sampling switch；Equalizing resistance；Sample circuit；The positive pole of one end connection cell of sampling switch, its is another
One end is connected to the negative pole of cell by equalizing resistance；Sample circuit is in parallel with the equalizing resistance；Sample circuit includes,
First equimultiple bleeder circuit, the second equimultiple bleeder circuit, differential amplifier circuit and voltage-regulator diode；Wherein the first equimultiple partial pressure electricity
The input on road is connected to the positive pole of cell by sampling switch, and output end is connected to the positive input of differential amplifier circuit
End；The input of second equimultiple bleeder circuit is connected to the negative pole of cell, and output end is connected to the negative of differential amplifier circuit
To input；The output end of differential amplifier circuit and the negative electrode of voltage-regulator diode connect, the output end as sample circuit；Voltage stabilizing
The plus earth of diode.
Then the strong electromagnetic radiation environment of spatial complex is directed to, traditional battery voltage sampling method can not be applicable, therefore
Need to isolate voltage sample scheme, ensure the reliability service under strong electromagnetic radiation environment.
The content of the invention
The present invention provides a kind of space lithium-ions battery group anti-strong electromagnetic isolation sample circuit, solves space forceful electric power
Battery voltage sampling problem under magnetic radiation environment.
To achieve the above object, the invention discloses a kind of anti-strong electromagnetic isolation sampling of space lithium-ions battery group
Circuit, it is characterized in, the circuit includes：
Voltage isolates acquiring unit, and it uses differential mode to obtain monomer voltage in lithium-ions battery group；
Isolated location, its circuit connection voltage isolation acquiring unit output end, isolates lithium-ions battery using Magnetic isolation mode
The high pressure and low pressure of group；
AD conversion unit, its circuit connection isolated location, the voltage analog signal of lithium-ions battery monomer is converted into counting
Word signal；
Control unit, its circuit connection AD conversion unit output end, monomer battery voltage is carried out using switch multiplexing matrix
Switching gating.
Above-mentioned voltage isolation acquiring unit selects a simulation gating switch and a connection to select a mould for two 16 comprising two 16
Select a simulation gating switch in intend gating switch output end 8.
Above-mentioned voltage isolation acquiring unit uses the INA148 chips of aerospace level.
Above-mentioned isolated location uses Magnetic isolation transformer.
Above-mentioned AD conversion unit includes：The analog-to-digital conversion module of isolated location is connected, analog-to-digital conversion mould is connected with circuit
The voltage follower circuit of block output end.
Above-mentioned control unit includes：Connect the central processing microcontroller and its periphery electricity of AD conversion unit output end
Road.
Above-mentioned central processing microcontroller is 80C32 single-chip microcomputers, peripheral circuit include extended on 80C32 single-chip microcomputers ROM,
RAM, house dog and address latch.
Above-mentioned voltage isolation acquiring unit, isolated location, AD conversion unit and control unit all use aerospace level electronics
Component.
The anti-strong electromagnetic of space lithium-ions battery group of the present invention isolates sample circuit and the battery pack of prior art is adopted
Sample circuit is compared, and the advantage is that, electronic component of the present invention all uses aerospace level, for space environment, can adapt to high rail,
The high pressure lithium-ions battery group of middle rail, low orbit spacecraft platform, each anti-interference isolation module are responsible for the anti-of some string batteries
Interference and insulation samples, and anti-interference isolation module is designed as expansible distributed system, ensure that long string lithium ion electric power storage
The security of pond group voltage sample.
Brief description of the drawings
Fig. 1 is the module map that the anti-strong electromagnetic of lithium-ions battery group in space of the present invention isolates sample circuit；
Fig. 2 is the circuit theory diagrams that the anti-strong electromagnetic of lithium-ions battery group in space of the present invention isolates sample circuit；
Fig. 3 is the layout drawing that the anti-strong electromagnetic of lithium-ions battery group in space of the present invention isolates sample circuit.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the invention is further illustrated.
As shown in figure 1, disclose a kind of anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group, the circuit
Comprising：Voltage isolation acquiring unit 101, isolated location 102, AD conversion unit 103 and control unit 104.
Voltage isolates acquiring unit 101, and it uses differential mode to obtain monomer voltage in lithium-ions battery group.
The terminal circuit connection voltage isolation output end of acquiring unit 101 of isolated location 102, is isolated using Magnetic isolation mode
The high pressure and low pressure of lithium-ions battery group, there is provided a kind of anti-strong electromagnetic isolation method of high-low pressure.
The circuit of AD conversion unit 103 connects the other end of isolated location 102, by the voltage-mode of lithium-ions battery monomer
Plan signal, which is converted into control unit 104, can handle the data signal of identification.
The circuit of control unit 104 connects the output end of AD conversion unit 103, is isolated using switch multiplexing matrix majorization voltage
Acquiring unit 101 carries out the switching gating of monomer battery voltage, and controls the analog-to-digital conversion of AD conversion unit 103.
As shown in Fig. 2 isolate sample circuit for the anti-strong electromagnetic of lithium-ions battery group in space disclosed by the invention
A kind of circuit theory diagrams of embodiment.In the present embodiment, the anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group
For space environment, the high pressure lithium-ions battery group of high rail, middle rail, low orbit spacecraft platform, each space lithium can adapt to
The anti-strong electromagnetic isolation sample circuit of ion accumulator group is responsible for the anti-interference isolation sampling of 24 string batteries, and space lithium ion stores
The anti-strong electromagnetic isolation sample circuit of battery pack is designed as expansible distributed system.
Further, hollow lithium-ions battery group of the present embodiment anti-strong electromagnetic isolation sample circuit in order to for
Space strong electromagnetic radiation interference environment, the electronic component used use aerospace level product.
Further, the anti-strong electromagnetic isolation sample circuit of hollow lithium-ions battery group of the present embodiment includes voltage
Isolate acquiring unit 201, isolated location 202, the modulus of connection isolated location 202 of connection voltage isolation acquiring unit 201 turn
Change unit 203, and the control unit 204 of connection AD conversion unit 203.
Wherein, voltage isolation acquiring unit 201 selects two 16 choosings of a simulation gating switch and a connection comprising two 16
A simulation gating switch is selected in the 8 of one simulation gating switch output end, for completing 24 passage lithium-ions battery monomer voltages
Order gates.
Preferably, voltage isolation acquiring unit 201 uses the INA148 chips of aerospace level.
Isolated location 202 uses Magnetic isolation transformer, by the ground of 24 string lithium ion batteries and rear end analog-to-digital conversion list
The ground of member and control unit isolates, and ensure that the safety and reliability of weak control circuit.
AD conversion unit 203 includes：The analog-to-digital conversion module of isolated location 202 is connected, and circuit connection modulus turns
The voltage follower circuit of block output end is changed the mold, for the voltage analog signal of 24 string lithium ion single batteries to be converted into controlling
Unit can handle the data signal of identification.
Control unit 204 includes：Connect the output end of AD conversion unit 203 central processing microcontroller with its outside
Enclose circuit.Specifically, to adapt to space application environment and considering spacecraft flight experience, central processing microcontroller is 80C32
Single-chip microcomputer, peripheral circuit include the peripheral circuits such as ROM, RAM, house dog and the address latch extended on 80C32 single-chip microcomputers,
The functions such as the AD conversion of passage gating, AD conversion unit for control voltage acquiring unit.
As shown in figure 3, isolate the layout drawing of sample circuit for the anti-strong electromagnetic of space lithium-ions battery group, it is seen that every
The anti-strong electromagnetic isolation sample circuit of individual space lithium-ions battery group connects one to one the battery module of one group of 24 string,
The voltage acquisition unit of the anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group is used to obtain 24 string lithium ions storage
Battery cell voltage, isolated location provide a kind of anti-strong electromagnetic isolation method of high-low pressure, and AD conversion unit is used for will
Analog voltage is converted to data signal, and control unit is being used for control voltage acquiring unit, isolated location, AD conversion unit just
Often operation.
The battery module of some series connection connects load by current detection circuit, fuse with soft starting circuit.
Some anti-strong electromagnetic isolation sample circuits of space lithium-ions battery group connect master control list by CAN
Member, Master Control Unit connection data center, charger and radiating flux Intelligent management module.Charger connects electric power storage by fuse
Pond module.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (8)
1. a kind of anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group, it is characterised in that the circuit includes：
Voltage isolates acquiring unit, and it uses differential mode to obtain monomer voltage in lithium-ions battery group；
Isolated location, its circuit connection voltage isolation acquiring unit output end, isolates lithium-ions battery using Magnetic isolation mode
The high pressure and low pressure of group；
AD conversion unit, its circuit connection isolated location, the voltage analog signal of lithium-ions battery monomer is converted into counting
Word signal；
Control unit, its circuit connection AD conversion unit output end, monomer battery voltage is carried out using switch multiplexing matrix
Switching gating.
2. the anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group as claimed in claim 1, it is characterised in that
The voltage isolation acquiring unit selects a simulation gating switch and a connection to select for two 16 simulation gating to open comprising two 16
Select a simulation gating switch in close output end 8.
3. the anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group as claimed in claim 1 or 2, its feature exist
In the voltage isolation acquiring unit uses the INA148 chips of aerospace level.
4. the anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group as claimed in claim 1, it is characterised in that
The isolated location uses Magnetic isolation transformer.
5. the anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group as claimed in claim 1, it is characterised in that
The AD conversion unit includes：The analog-to-digital conversion module of isolated location is connected, analog-to-digital conversion module output end is connected with circuit
Voltage follower circuit.
6. the anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group as claimed in claim 1, it is characterised in that
Described control unit includes：Connect the central processing microcontroller and its peripheral circuit of AD conversion unit output end.
7. the anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group as claimed in claim 6, it is characterised in that
The central processing microcontroller is 80C32 single-chip microcomputers, and peripheral circuit includes the ROM, RAM extended on 80C32 single-chip microcomputers, guarded the gate
Dog and address latch.
8. the anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group as claimed in claim 1, it is characterised in that
Voltage isolation acquiring unit, isolated location, AD conversion unit and the control unit all use aerospace level electronic component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009193.7A CN107797071A (en) | 2017-10-25 | 2017-10-25 | A kind of anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group |
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| CN201711009193.7A CN107797071A (en) | 2017-10-25 | 2017-10-25 | A kind of anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group |
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| CN107797071A true CN107797071A (en) | 2018-03-13 |
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| CN201711009193.7A Pending CN107797071A (en) | 2017-10-25 | 2017-10-25 | A kind of anti-strong electromagnetic isolation sample circuit of space lithium-ions battery group |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108536062A (en) * | 2018-04-08 | 2018-09-14 | 上海空间电源研究所 | A kind of separation acquisition module suitable for spatial overlay |
| CN109507466A (en) * | 2018-11-15 | 2019-03-22 | 上海空间电源研究所 | A kind of high-precision wire sexual isolation sample circuit and its implementation method |
| CN109828219A (en) * | 2019-03-21 | 2019-05-31 | 奇瑞新能源汽车技术有限公司 | A kind of electric automobile power battery insulation detecting circuit |
| CN112332491A (en) * | 2020-11-13 | 2021-02-05 | 上海空间电源研究所 | Battery isolation control system and method based on asynchronous serial-parallel conversion |
| CN112332492A (en) * | 2020-11-13 | 2021-02-05 | 上海空间电源研究所 | Management system and method of high-voltage multi-group long-string batteries based on magnetic isolation technology |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108536062A (en) * | 2018-04-08 | 2018-09-14 | 上海空间电源研究所 | A kind of separation acquisition module suitable for spatial overlay |
| CN109507466A (en) * | 2018-11-15 | 2019-03-22 | 上海空间电源研究所 | A kind of high-precision wire sexual isolation sample circuit and its implementation method |
| CN109828219A (en) * | 2019-03-21 | 2019-05-31 | 奇瑞新能源汽车技术有限公司 | A kind of electric automobile power battery insulation detecting circuit |
| CN112332491A (en) * | 2020-11-13 | 2021-02-05 | 上海空间电源研究所 | Battery isolation control system and method based on asynchronous serial-parallel conversion |
| CN112332492A (en) * | 2020-11-13 | 2021-02-05 | 上海空间电源研究所 | Management system and method of high-voltage multi-group long-string batteries based on magnetic isolation technology |
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Application publication date: 20180313 |