CN108761342A - A kind of new energy electric motor vehicle storage battery safety test method - Google Patents
A kind of new energy electric motor vehicle storage battery safety test method Download PDFInfo
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- CN108761342A CN108761342A CN201810561292.4A CN201810561292A CN108761342A CN 108761342 A CN108761342 A CN 108761342A CN 201810561292 A CN201810561292 A CN 201810561292A CN 108761342 A CN108761342 A CN 108761342A
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Abstract
The invention discloses a kind of new energy electric motor vehicle storage battery safety test methods, include the following steps：S1, the acquisition for carrying out data to accumulator by data collecting system；S2, terminal interface are connected with accumulator to be tested；S3, internal resistance r=(the E-V)/I=Δs μ/I for measuring accumulator；S4, signal processing integrated circuit carry out multiple-stage filtering and multistage amplification to data information, and analog quantity are converted to digital quantity by high-precision A/D conversion chips, are input in MSP430F5529 microcontrollers；The present invention is not when data are or not the secure data section to prestore, MSP430F5529 microcontrollers trigger alarm equipment alarm, testing staff is reminded to pay attention to, early stage can be deteriorated in accumulator, and discovery performance deteriorates battery in time, it avoids due to there is accumulator deterioration accumulation, aggravation, and leads to serious straight-flow system accident.Testing time is short, and will not cause permanent damage to accumulator.
Description
Technical field
The invention belongs to storage battery safety technical field of measurement and test, more specifically more particularly to a kind of New energy electric
Vehicle storage battery safety test method.
Background technology
Accumulator is a kind of device that chemical energy is directly translated into electric energy, is the battery designed by rechargeable, passes through
Reversible chemical reaction realization recharges, and typically refers to lead-acid accumulator, it is one kind in battery, belongs to secondary cell.It
Operation principle：So that internal active material is regenerated using external electric energy when charging, electric energy is stored as chemical energy, needs to discharge
Chemical energy is converted to electric energy output, such as common electromobile battery etc. in life by Shi Zaici.
For accumulator during long-time use, wherein internal resistance, electric current and voltage can all generate variation, existing electric power storage
In the monitoring of pond, whether internal resistance, electric current and voltage meet the requirements, just unknown.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of new energy electric motor vehicle proposed stores
Method for testing security of battery.
To achieve the above object, the present invention provides the following technical solutions：
A kind of new energy electric motor vehicle storage battery safety test method, includes the following steps：
S1, by data collecting system to accumulator carry out data acquisition, the data collecting system by internal resistance measurement instrument,
Pressure measuring instrument, current measuring instrument, terminal interface, signal processing integrated circuit, communication module and display module are constituted；
S2, terminal interface are connected with accumulator to be tested, the internal resistance measurement instrument, pressure measuring instrument and current measurement
The data information transfer of instrument acquisition is to signal processing integrated circuit；
S3, foundation accumulator national standard, single-unit " rated capacity " accumulator of Pass Test condition is put with defined
Electric rate carries out constant-current discharge, and Timing measurement voltage simultaneously draws " discharge characteristic curve " for meeting accumulator national standard, while
10-20 capacity point is averagely taken within the scope of " discharge characteristic curve " corresponding accumulator maximum capacity to minimum capacity and is used
Fixed load sensor in internal resistance volume test device makes accumulator be in " under direct current dynamic transient impulsive discharge state ", profit
Sky/load voltage is acquired with MSP430F5529 microcontrollers and discharge current detects signal, is measured by multibyte floating point operation
" internal resistance of direct current dynamic " is determined according to the logarithmic relationship in the entire variation range of capacity between accumulator internal resistance and electric current
" optimum value " for going out direct current dynamic transient impulsive discharge electric current be 1.8 times of the corresponding discharge current of defined discharge rate-
2.2 times, and determine the resistance value i.e. resistance value of " fixed load " of discharge loop, this " optimum value " makes accumulator described in correspondence
Each capacity point on " discharge characteristic curve " generates the internal resistance r of a sufficiently large stabilization, while generating a sufficiently large stabilization
Voltage drop Δ μ, at this time accurately measure accumulator electromotive force (E), discharge voltage (V) and discharge current (I), measure electric power storage
The internal resistance r=(E-V) in pond/I=Δs μ/I；
S4, signal processing integrated circuit carry out multiple-stage filtering and multistage amplification to data information, and are turned by high-precision A/D
It changes chip and analog quantity is converted into digital quantity, be input in MSP430F5529 microcontrollers, then pass through MSP430F5529 monolithics
The processing of machine, is shown on display module, while data being stored into cloud service platform and eeprom memory；
Communication module can transfer data to cloud service platform in S5, step S4, by data and cloud service platform
The internal resistance r values measured in stored step S3 are compared, when data are not or not the secure data section to prestore,
MSP430F5529 microcontrollers trigger alarm equipment alarm.
Preferably, the internal resistance measurement instrument, pressure measuring instrument and current measuring instrument be respectively used to measure accumulator internal resistance,
Output voltage and output current.
Preferably, the internal resistance measurement instrument tests internal resistance using accumulator instantaneous discharge method, and accumulator is articulated in charger
On, it is powered to DC load by charger, accumulator is in floating charge state, realizes and tests internal resistance to accumulator instantaneous discharge method.
Preferably, the accumulator is divided into two groups, and every group using high-power resistance as discharge load, controller timesharing control
Two solid-state relays are made, complete instantaneous discharge operation, while each electric power storage is acquired using voltage sensor and current sensor
Discharge voltage before and after the electric discharge of pond monomer and discharge current.
Preferably, when the internal resistance of test be internal resistance a reference value 85-95%, while test accumulator high magnification high current
Minimum voltage threshold values when electric discharge is the 80-90% of minimum voltage reference threshold, then can be determined that the accumulator property of test is excellent
It is different.
The technique effect and advantage of the present invention：A kind of new energy electric motor vehicle storage battery safety test side provided by the invention
Method, signal processing integrated circuit carry out multiple-stage filtering and multistage amplification to data information, and will by high-precision A/D conversion chips
Analog quantity is converted to digital quantity, is input in MSP430F5529 microcontrollers, in this way, the precision that data information receives is high, improves accurate
True property；
In addition, when data are not or not the secure data section to prestore, MSP430F5529 microcontrollers trigger alarm equipment alarm,
Reminding testing staff, discovery performance deteriorates battery in time note that in accumulator can be deteriorated early stage, avoids due to there is accumulator
Deterioration accumulation, aggravation, and lead to serious straight-flow system accident.
Testing time is short, reduce workload, ensures the normal operation and superperformance of accumulator, and will not be to electric power storage
Cause permanent damage in pond.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
The every other embodiment obtained is put, shall fall within the protection scope of the present invention.
A kind of new energy electric motor vehicle storage battery safety test method, includes the following steps：
S1, by data collecting system to accumulator carry out data acquisition, the data collecting system by internal resistance measurement instrument,
Pressure measuring instrument, current measuring instrument, terminal interface, signal processing integrated circuit, communication module and display module are constituted；
S2, terminal interface are connected with accumulator to be tested, the internal resistance measurement instrument, pressure measuring instrument and current measurement
The data information transfer of instrument acquisition is to signal processing integrated circuit；
S3, foundation accumulator national standard, single-unit " rated capacity " accumulator of Pass Test condition is put with defined
Electric rate carries out constant-current discharge, and Timing measurement voltage simultaneously draws " discharge characteristic curve " for meeting accumulator national standard, while
10-20 capacity point is averagely taken within the scope of " discharge characteristic curve " corresponding accumulator maximum capacity to minimum capacity and is used
Fixed load sensor in internal resistance volume test device makes accumulator be in " under direct current dynamic transient impulsive discharge state ", profit
Sky/load voltage is acquired with MSP430F5529 microcontrollers and discharge current detects signal, is measured by multibyte floating point operation
" internal resistance of direct current dynamic " is determined according to the logarithmic relationship in the entire variation range of capacity between accumulator internal resistance and electric current
" optimum value " for going out direct current dynamic transient impulsive discharge electric current be 1.8 times of the corresponding discharge current of defined discharge rate-
2.2 times, and determine the resistance value i.e. resistance value of " fixed load " of discharge loop, this " optimum value " makes accumulator described in correspondence
Each capacity point on " discharge characteristic curve " generates the internal resistance r of a sufficiently large stabilization, while generating a sufficiently large stabilization
Voltage drop Δ μ, at this time accurately measure accumulator electromotive force (E), discharge voltage (V) and discharge current (I), measure electric power storage
The internal resistance r=(E-V) in pond/I=Δs μ/I；
S4, signal processing integrated circuit carry out multiple-stage filtering and multistage amplification to data information, and are turned by high-precision A/D
It changes chip and analog quantity is converted into digital quantity, be input in MSP430F5529 microcontrollers, then pass through MSP430F5529 monolithics
The processing of machine, is shown on display module, while data being stored into cloud service platform and eeprom memory；
Communication module can transfer data to cloud service platform in S5, step S4, by data and cloud service platform
The internal resistance r values measured in stored step S3 are compared, when data are not or not the secure data section to prestore,
MSP430F5529 microcontrollers trigger alarm equipment alarm.
The internal resistance measurement instrument, pressure measuring instrument and current measuring instrument are respectively used to measure the internal resistance of accumulator, output electricity
Pressure and output current.
The internal resistance measurement instrument tests internal resistance using accumulator instantaneous discharge method, and accumulator is articulated on charger, by filling
Motor is powered to DC load, and accumulator is in floating charge state, is realized and is tested internal resistance to accumulator instantaneous discharge method.
The accumulator is divided into two groups, and every group using high-power resistance as discharge load, controller Time-sharing control two
Solid-state relay completes instantaneous discharge operation, while acquiring each single battery using voltage sensor and current sensor
Electric discharge before and after discharge voltage and discharge current.
As the 85-95% that the internal resistance of test is internal resistance a reference value, while when the accumulator high magnification heavy-current discharge of test
Minimum voltage threshold values be minimum voltage reference threshold 80-90%, then can be determined that the accumulator property of test is excellent.
In summary：A kind of new energy electric motor vehicle storage battery safety test method provided by the invention, signal processing collection
Multiple-stage filtering and multistage amplification are carried out to data information at circuit, and are converted to analog quantity by high-precision A/D conversion chips
Digital quantity is input in MSP430F5529 microcontrollers, in this way, the precision that data information receives is high, improves accuracy；
In addition, when data are not or not the secure data section to prestore, MSP430F5529 microcontrollers trigger alarm equipment alarm,
Reminding testing staff, discovery performance deteriorates battery in time note that in accumulator can be deteriorated early stage, avoids due to there is accumulator
Deterioration accumulation, aggravation, and lead to serious straight-flow system accident.
Testing time is short, reduce workload, ensures the normal operation and superperformance of accumulator, and will not be to electric power storage
Cause permanent damage in pond.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (5)
1. a kind of new energy electric motor vehicle storage battery safety test method, it is characterised in that：Include the following steps：
S1, the acquisition for carrying out data to accumulator by data collecting system, the data collecting system is by internal resistance measurement instrument, voltage
Measuring instrument, current measuring instrument, terminal interface, signal processing integrated circuit, communication module and display module are constituted；
S2, terminal interface are connected with accumulator to be tested, and the internal resistance measurement instrument, pressure measuring instrument and current measuring instrument are adopted
The data information transfer of collection is to signal processing integrated circuit；
S3, foundation accumulator national standard, by single-unit " rated capacity " accumulator of Pass Test condition with defined discharge rate
Constant-current discharge is carried out, Timing measurement voltage simultaneously draws " discharge characteristic curve " for meeting accumulator national standard, while in " electric discharge
10-20 capacity point is averagely taken within the scope of the corresponding accumulator maximum capacity to minimum capacity of characteristic curve " and uses interior capacitance-resistance
Fixed load sensor in amount test device makes accumulator be in " under direct current dynamic transient impulsive discharge state ", utilizes
MSP430F5529 microcontrollers acquire sky/load voltage and discharge current detects signal, are measured by multibyte floating point operation " straight
Flowable state internal resistance " is determined straight according to the logarithmic relationship in the entire variation range of capacity between accumulator internal resistance and electric current
" optimum value " of flowable state moment impact discharge current be at 1.8 times -2.2 times of the corresponding discharge current of defined discharge rate,
And determine the resistance value i.e. resistance value of " fixed load " of discharge loop, this " optimum value " makes accumulator " electric discharge spy described in correspondence
Each capacity point on linearity curve " generates the internal resistance r of a sufficiently large stabilization, while generating the voltage drop of a sufficiently large stabilization
Δ μ accurately measures electromotive force (E), discharge voltage (V) and the discharge current (I) of accumulator, measures the internal resistance of accumulator at this time
R=(E-V)/I=Δs μ/I；
S4, signal processing integrated circuit carry out multiple-stage filtering and multistage amplification to data information, and convert core by high-precision A/D
Analog quantity is converted to digital quantity by piece, is input in MSP430F5529 microcontrollers, and MSP430F5529 microcontrollers are then passed through
Processing, is shown on display module, while data being stored into cloud service platform and eeprom memory；
Communication module can transfer data to cloud service platform in S5, step S4, and data have been deposited with cloud service platform
The internal resistance r values measured in the step S3 of storage are compared, when data are not or not the secure data section to prestore, MSP430F5529
Microcontroller triggers alarm equipment alarm.
2. a kind of new energy electric motor vehicle storage battery safety test method described in claim 1, it is characterised in that：The internal resistance
Measuring instrument, pressure measuring instrument and current measuring instrument are respectively used to measure internal resistance, output voltage and the output current of accumulator.
3. a kind of new energy electric motor vehicle storage battery safety test method described in claim 1, it is characterised in that：The internal resistance
Measuring instrument tests internal resistance using accumulator instantaneous discharge method, and accumulator is articulated on charger, is supplied to DC load by charger
Electricity, accumulator are in floating charge state, realize and test internal resistance to accumulator instantaneous discharge method.
4. a kind of new energy electric motor vehicle storage battery safety test method described in claim 1, it is characterised in that：The electric power storage
Pond is divided into two groups, and every group using high-power resistance as discharge load, two solid-state relays of controller Time-sharing control, completion wink
When discharge operation, while acquiring using voltage sensor and current sensor the electric discharge electricity before and after the electric discharge of each single battery
Pressure and discharge current.
5. a kind of new energy electric motor vehicle storage battery safety test method described in claim 1, it is characterised in that：When test
Internal resistance is the 85-95% of internal resistance a reference value, while the minimum voltage threshold values when accumulator high magnification heavy-current discharge of test is
The 80-90% of minimum voltage reference threshold then can be determined that the accumulator property of test is excellent.
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Cited By (3)
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| CN110057702A (en) * | 2019-04-24 | 2019-07-26 | 莱州市蔚仪试验器械制造有限公司 | A kind of part to be tested hardness result analysis method |
| CN111781527A (en) * | 2020-08-24 | 2020-10-16 | 国家电网有限公司 | Detection device and equipment for degraded battery |
| CN113238155A (en) * | 2021-06-24 | 2021-08-10 | 国网山西省电力公司晋中供电公司 | Battery fault or failure detection method based on impulse discharge |
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