CN109617174A - A kind of control circuit implementation method of battery energy management - Google Patents
A kind of control circuit implementation method of battery energy management Download PDFInfo
- Publication number
- CN109617174A CN109617174A CN201811599562.7A CN201811599562A CN109617174A CN 109617174 A CN109617174 A CN 109617174A CN 201811599562 A CN201811599562 A CN 201811599562A CN 109617174 A CN109617174 A CN 109617174A
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- Prior art keywords
- battery
- voltage
- acquisition module
- data
- soc processor
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Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- H02J7/0085—
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- H02J7/0086—
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- H02J7/0091—
Abstract
The present invention relates to a kind of control circuit implementation methods of battery energy management, control circuit includes SOC processor, programmable power supply, battery voltage acquisition module, battery temperature acquisition module and current acquisition module, input voltage interface is connected to SOC processor, the cell voltage of acquisition is transferred to SOC processor by battery voltage acquisition module, the battery temperature of acquisition is transferred to SOC processor by battery temperature acquisition module, and SOC processor receives the battery current data of current acquisition module acquisition；SOC processor, which passes through itself to table look-up, to be found similar voltage value and exports linear output voltage by programmable power supply；The control circuit implementation method of battery energy management of the present invention, reduces production cost, and the setting of state-of-charge processor can be arranged from tabling look-up according to error precision requirement.
Description
Technical field
The present invention relates to a kind of electric vehicle lithium battery control circuit implementation method, especially a kind of control of battery energy management
Circuit implementing method processed.
Background technique
Lithium ion battery is current secondary cell (rechargeable battery) state-of-the-art in the world, has small in size, light-weight, energy
Metric density height, long service life, memory-less effect, environmental protection, it is safe and reliable the advantages that, be the ideal source of top-grade instrument instrument.
When voltage is identical with capacity, compared with lead-acid battery, the volume of lithium ion battery is reduced to half, and weight is reduced to a quarter, and
Service life is three times of lead-acid battery, and compared with ni-mh or nickel-cadmium cell, the volume and weight of lithium ion battery is each about half,
And the service life is then their two times, the pay attention to day by day of Environmental protection, lead-acid battery will gradually be eliminated, we grind thus
The control circuit implementation method for having sent out a kind of lithium battery energy management passes through SOC (State of Charge) state-of-charge
Processor checks oneself the voltmeter of inner setting, and the precision for selecting programmable power supply to reduce costs, and table look-up certainly can be set according to demand
It sets.
Summary of the invention
The control circuit that a kind of battery energy management is provided the invention aims to overcome the deficiencies in the prior art is real
Existing method.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of control circuit of battery energy management is realized
Method, it is characterised in that: include the following steps,
Step 1: the control circuit of battery energy management include SOC processor, programmable power supply and with SOC processor phase
Acquisition module even, acquisition module includes battery voltage acquisition module, battery temperature acquisition module and current acquisition module；
Step 2: input voltage interface is connected to SOC processor, and SOC processor receives battery voltage acquisition module acquisition
Battery voltage data, SOC processor receive battery temperature acquisition module acquisition battery temperature data and current acquisition mould
The current data of block；
Step 3: SOC processor handles battery voltage data, battery temperature data and current data, and by this
The tables of data that a little data and SOC processor are set certainly carries out comparison of tabling look-up, and selects immediate cell voltage output data；
Step 4: the received battery voltage data of SOC processor obtains line by programmable power supply output voltage in step 3
Property power supply.
Preferably, the horizontal bar of tables of data is the output voltage values under corresponding temperature in step 3, and erecting column is the charged shape of voltage
The voltage value of corresponding output voltage values under state percentage, horizontal bar and perpendicular column infall is resulting close voltage value of tabling look-up.
Preferably, the current acquisition module in step 2 uses Hall sensor.
Preferably, programmable power supply described in step 4 is pwm pulse width modulated, LDO low pressure difference linear voltage regulator and DC/
One of DC voltage converter.
Preferably, the detection accuracy of the voltage state of charge percentage for checking oneself tables of data reaches 0.01%, detection essence
Degree can be arranged in tables of data.
Due to the application of the above technical scheme, compared with the prior art, the invention has the following advantages:
The control circuit implementation method of battery energy management of the present invention checks oneself voltage by SOC processor on pcb board
Close voltage value under state of charge percentage corresponding temperature exports stable voltage by programmable power supply, reduces production cost；
The setting of state-of-charge processor can be arranged from tabling look-up according to error precision requirement, to meet different demands.
Detailed description of the invention
Attached drawing 1 is the control circuit implementation method connection schematic diagram of battery energy management of the present invention；
Attached drawing 2 is the control circuit implementation method external physical connection schematic diagram of battery energy management of the present invention；
Attached drawing 3 is that the lithium battery of identical voltage of the present invention and the state-of-charge of lead-acid battery compare diagram；
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is described in further details.
In attached drawing 1, a kind of control circuit implementation method of battery energy management, including SOC processor, programmable power supply, electricity
Cell voltage acquisition module, battery temperature acquisition module and current acquisition module；The programmable power supply is pwm pulse width modulated；
The current acquisition module is acquired battery current using Hall sensor；Input voltage interface is connected to SOC processor,
The data of acquisition are transferred to SOC processor by battery voltage acquisition module, battery temperature acquisition module and current acquisition module,
SOC processor finds similar voltage value and passes through the journey of pwm pulse width modulated by searching for the list data of setting themselves
Control the output voltage of power supply output line.
A kind of control circuit implementation method of battery energy management, includes the following steps,
Step 1: the control circuit of battery energy management include SOC processor, programmable power supply and with SOC processor phase
Acquisition module even, acquisition module includes battery voltage acquisition module, battery temperature acquisition module and current acquisition module；
Step 2: input voltage interface is connected to SOC processor, and SOC processor receives battery voltage acquisition module acquisition
Battery voltage data, SOC processor receive battery temperature acquisition module acquisition battery temperature data and current acquisition mould
The current data of block, current acquisition module use Hall sensor；
Step 3: SOC processor handles battery voltage data, battery temperature data and current data, and by this
The tables of data that a little data and SOC processor are set certainly carries out comparison of tabling look-up, and selects immediate cell voltage output data；Tables of data
Horizontal bar be corresponding temperature under output voltage values, erect column be voltage state of charge percentage under corresponding output voltage values；It is horizontal
The voltage value of column and perpendicular column infall is resulting close voltage value of tabling look-up；
Step 4: the received battery voltage data of SOC processor obtains line by programmable power supply output voltage in step 3
Property power supply, programmable power supply be pwm pulse width modulated, LDO low pressure difference linear voltage regulator and DC/DC electric pressure converter in one
Kind.
The detection accuracy of the voltage state of charge percentage for checking oneself tables of data reaches 0.01%, and detection accuracy can be
Setting in tables of data.
In attached drawing 2, the DC voltage Vx of input is connected to motor M through switch, and PCB control panel is connected by voltage dial gauge
To DC power supply.The output voltage values for the voltage state of charge percentage corresponding data table that voltage dial gauge is shown be Vy, Vy with
The ratio of Vx is the duty ratio of pwm pulse width modulated.
In attached drawing 3, a curve is the state-of-charge curve of lead-acid battery, and b curve is the state-of-charge curve of lithium battery.Together
The lithium battery of equal-specification is easier to control by SOC processor.
Compared with the prior art, the invention has the following advantages:
The control circuit implementation method of battery energy management of the present invention checks oneself voltage by SOC processor on pcb board
Close voltage value under state of charge percentage corresponding temperature exports stable voltage by programmable power supply, reduces production cost；
The setting of state-of-charge processor can be arranged from tabling look-up according to error precision requirement, to meet different demands.
The above is only specific application examples of the invention, are not limited in any way to protection scope of the present invention.All uses
Equivalent transformation or equivalent replacement and the technical solution formed, all fall within rights protection scope of the present invention.
Claims (5)
1. a kind of control circuit implementation method of battery energy management, it is characterised in that: include the following steps,
Step 1: the control circuit of battery energy management includes SOC processor, programmable power supply and is connected with SOC processor
Acquisition module, acquisition module include battery voltage acquisition module, battery temperature acquisition module and current acquisition module；
Step 2: input voltage interface is connected to SOC processor, and SOC processor receives the electricity of battery voltage acquisition module acquisition
Cell voltage data, SOC processor receive the battery temperature data and current acquisition module of battery temperature acquisition module acquisition
Current data；
Step 3: SOC processor handles battery voltage data, battery temperature data and current data, and these are counted
Comparison of tabling look-up is carried out from the tables of data set according to SOC processor, selects immediate cell voltage output data；
Step 4: the received battery voltage data of SOC processor obtains linear by the output voltage of programmable power supply in step 3
Power supply.
2. the control circuit implementation method of battery energy management according to claim 1, it is characterised in that: data in step 3
The horizontal bar of table is the output voltage values under corresponding temperature, and erecting column is corresponding output voltage values under voltage state of charge percentage,
The voltage value of horizontal bar and perpendicular column infall is resulting close voltage value of tabling look-up.
3. the control circuit implementation method of battery energy management according to claim 1, it is characterised in that: the electricity in step 2
It flows acquisition module and uses Hall sensor.
4. the control circuit implementation method of battery energy management according to claim 1, it is characterised in that: described in step 4
Programmable power supply is one of pwm pulse width modulated, LDO low pressure difference linear voltage regulator and DC/DC electric pressure converter.
5. the control circuit implementation method of battery energy management according to claim 2, it is characterised in that: described to check oneself data
The detection accuracy of the voltage state of charge percentage of table reaches 0.01%, and detection accuracy can be arranged in tables of data.
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| CN201811599562.7A CN109617174A (en) | 2018-12-26 | 2018-12-26 | A kind of control circuit implementation method of battery energy management |
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| CN201811599562.7A CN109617174A (en) | 2018-12-26 | 2018-12-26 | A kind of control circuit implementation method of battery energy management |
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- 2018-12-26 CN CN201811599562.7A patent/CN109617174A/en active Pending
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| CN101688899A (en) * | 2007-08-22 | 2010-03-31 | 株式会社Lg化学 | Apparatus for estimating open circuit voltage of battery, apparatus for estimating state of charge of battery, and method for controlling the same |
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