CN102565711A - Method for testing voltage condition of battery pack - Google Patents
Method for testing voltage condition of battery pack Download PDFInfo
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- CN102565711A CN102565711A CN2011103947461A CN201110394746A CN102565711A CN 102565711 A CN102565711 A CN 102565711A CN 2011103947461 A CN2011103947461 A CN 2011103947461A CN 201110394746 A CN201110394746 A CN 201110394746A CN 102565711 A CN102565711 A CN 102565711A
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Abstract
The invention discloses a method for testing a voltage condition of a battery pack, relating to the test technology of batteries. The method comprises the following steps: a data processing device and a battery pack voltage condition testing device are prepared; the battery pack voltage condition testing device is used for reading voltage values of each single battery under various conditions when the battery pack is positioned under the conditions of resting, charging and discharging, and the data of read voltage values can be sent to the data processing device; the data processing device is used for classifying the data under various conditions and then carrying out the following two processing steps of testing the consistency and testing an amplitude value; and a corresponding command of a judged result can be sent to the battery pack voltage condition testing device by the data processing device, a corresponding operation command can be sent to an acoustic-optical display unit by the battery pack voltage condition testing device, the acoustic-optical display unit is used for sounding and displaying information, thus whether the voltage of the battery is qualified or not can be displayed, and information of qualification or disqualification can be simultaneously displayed on a display interface of the data processing device. According to the method disclosed by the invention, whether a balanced degree of the voltage of the battery pack is qualified or not can be easily judged in a using process of the battery pack, thus an unqualified single battery in the battery pack can be picked out and replaced, and the cost problem caused by the replacement of the whole battery pack can be reduced.
Description
Technical field
The present invention relates to the battery testing technology.
Background technology
In the battery testing field, the detection and the galvanochemistry aspect performance detection of battery holding capacity when the test of battery is mainly concentrated on environmental abnormality.And at present galvanochemistry aspect performance detection mainly is, the function that be easy to find comparatively common around some and the detection of performance issue.For example: the test of aspect such as the over-discharge can of the overcharging of the charging process of electric battery, the discharge process of electric battery, electric battery, electric battery, external short circuit, low-voltage variation, electric battery internal resistance.And in charge and discharge process in the electric battery consistance of single battery voltage whether can reach standard, do not come into one's own.Usually, the use after a while of electric battery warp, because the consumption of battery interior active material reduces the whole volume of electric battery gradually, internal resistance increases gradually or single battery voltage can not reach requirement, and then can not satisfy normal function and use.If but the electric battery in change using again will cause the very big loss on the loaded down with trivial details and cost of production process.Common this condition of poor maybe be just causes by one or two single batteries in the electric battery are bad.
Summary of the invention
The object of the present invention is to provide a kind of method of testing to the battery voltage state of single battery voltage in electric battery or the electric battery.
The object of the invention can be realized like this, designs a kind of method of testing of battery voltage state, may further comprise the steps;
A, preparation data processing equipment, battery voltage state testing device, the battery voltage state testing device comprises charge-discharge machine CDS, acousto-optic display unit, communication unit module GGS, relay tip unit, many temperature voltages acquisition module MTVS;
B, battery voltage state testing device are static in electric battery, read the magnitude of voltage of each single battery under each state in the electric battery respectively under the charging, three kinds of states of discharge, and the voltage value data that reads is sent to data processing equipment;
C, data processing equipment are done following two kinds of processing with the profiles under the various states:
C1 wherein: data processing equipment is arranged each voltage value data under the same state with from big to small order or backward, find out maximum voltage value and minimum voltage value, writes down its difference; With this difference and the contrast of corresponding reference numerical value, if this difference smaller or equal to the corresponding reference data, judges that then electric battery consistance under this state is up to standard; Otherwise, judge that then consistance is not up to standard under this state;
C2: data processing equipment compares each voltage value data under the same state with maximum reference value of corresponding voltage and minimum reference value; If magnitude of voltage in the interval range of maximum reference value and minimum reference value, judges that then electric battery amplitude under this state is up to standard; Otherwise, judge that then amplitude is not up to standard under this state;
D, data processing equipment are issued the battery voltage state testing device with the instruction of the result of determination of correspondence; The battery voltage state testing device then sends corresponding operational order and gives the acousto-optic display unit; The acousto-optic display unit is sounded and display message shows whether this batteries voltage is qualified, and the data processing equipment display interface also can show qualified or defective information simultaneously.
Whether the present invention can judge battery voltage easily in the electric battery use quality of balance is qualified, can pick out underproof single battery and replacing in the electric battery, so just can reduce because of changing the cost problem that whole battery group is brought.
Description of drawings
Fig. 1 is the stationary state uniformity test process flow diagram of preferred embodiment of the present invention;
Fig. 2 is the charging and discharging state uniformity test process flow diagram of preferred embodiment of the present invention;
Fig. 3 is the stationary state amplitude test flow chart of preferred embodiment of the present invention;
Fig. 4 is the charging and discharging state amplitude test flow chart of preferred embodiment of the present invention.
Embodiment
Below in conjunction with embodiment the present invention is done further description.
A kind of method of testing of battery voltage state may further comprise the steps:
A, preparation data processing equipment, battery voltage state testing device, the battery voltage state testing device comprises charge-discharge machine CDS, acousto-optic display unit, communication unit module GGS, relay tip unit, many temperature voltages acquisition module MTVS;
Charge-discharge machine CDS: can accomplish batteries charging and discharging function, the test battery group whether discharge and recharge function normal, and can read the essential information of electric battery under charging and discharging state, like: charging voltage and discharge electricity etc.;
Communication unit module GGS: be responsible for the data communication between charge-discharge machine and the tested electric battery; Be connected with the data communication interface of electric battery; Have SMBUS interface, I2C interface, SPI interface, CAN EBI, can connect with different electric battery data communication interfaces, read the data in the power brick administrative unit through these interfaces; And, supply the data processing equipment analyzing and processing with data back;
Relay tip unit: through receiving the steering order of data processing equipment, the action that each relay tip is orderly, the function control switch contact of matching battery group, the related switch function of test battery group;
Many temperature voltages collecting unit MTVS: can read the single battery voltage of electric battery and the temperature of a plurality of positions;
Acousto-optic display unit: the work state information that is used for showing electric battery comprehensive test device test battery group;
B, battery voltage state testing device are static in electric battery, read the magnitude of voltage of each single battery under each state in the electric battery respectively under the charging, three kinds of states of discharge, and the voltage value data that reads is sent to data processing equipment;
C, data processing equipment are done following two kinds of processing with the profiles under the various states:
C1 wherein: data processing equipment is arranged each voltage value data under the same state with from big to small order or backward, find out maximum voltage value and minimum voltage value, writes down its difference; With this numerical value and the contrast of corresponding reference numerical value, if this difference smaller or equal to the corresponding reference data, judges that then electric battery consistance under this state is up to standard; Otherwise, judge that then consistance is not up to standard under this state;
C2: data processing equipment compares each voltage value data under the same state with maximum reference value of corresponding voltage and minimum reference value; If magnitude of voltage in the interval range of maximum reference value and minimum reference value, judges that then electric battery amplitude under this state is up to standard; Otherwise, judge that then amplitude is not up to standard under this state;
D, data processing equipment are issued the battery voltage state testing device with the instruction of the result of determination of correspondence; The battery voltage state testing device then sends corresponding operational order and gives the acousto-optic display unit; The acousto-optic display unit is sounded and display message shows whether this batteries voltage is qualified, and the data processing equipment display interface also can show qualified or defective information simultaneously.
The battery voltage state testing device comprises charge-discharge machine CDS, acousto-optic display unit, communication unit module GGS, relay tip unit, many temperature voltages acquisition module MTVS, and above-mentioned parts are installed in the case and cabinet.It is equipment of HT60V-40A or the like that equipment with this function has Shenzhen auspicious electric battery comprehensive test device (CTS-60V/50A-GGS), HTK company model that can Industrial Co., Ltd..
Data processing equipment adopts computing machine usually; Computing machine is connected with the battery voltage state testing device; The battery voltage state testing device links to each other with electric battery again, has promptly formed battery voltage state performance testing system platform, can realize the test to the battery voltage performance.
Battery voltage state testing device associated components performance and the effect as follows:
Charge-discharge machine CDS; Can accomplish batteries charging and discharging function; The test battery group whether discharge and recharge function normal, and can read the essential information of electric battery under charging and discharging state, like charging voltage and sparking voltage, charging current and discharge current, capacity etc.;
Communication unit module GGS; Be responsible for the data communication between charge-discharge machine CDS and the tested electric battery, be connected, have SMBUS interface, I2C interface, SPI interface, CAN EBI with the data communication interface of electric battery; Can connect with different electric battery data communication interfaces through these interfaces; Read the data of power brick administrative unit (for example BMS unit) lining, and, supply Computer Analysis to handle data back;
The relay tip array element is through the orderly action of each relay tip of steering order of receiving computer, the function control switch contact of matching battery group, the related switch function of test battery group;
Many temperature voltages collecting unit MTVS can read the single battery voltage of electric battery and the temperature of a plurality of positions;
The acousto-optic display unit is used for showing the work state information of battery voltage state testing device test battery group.
Be to abide by RS232, RS485, CAN bus or LAN bus protocol to connect between computing machine and the battery voltage state testing device.
Communication between battery voltage state testing device and the electric battery is carried out in accordance with the bus CAN of controller local area network, high-speed synchronous universal serial bus SPI, the total SMBUS of system management or twin wire universal serial bus I2C agreement.
Be to couple together with the supporting connecting line of electric battery between battery voltage state testing device and the electric battery through one; Anodal comprising the electric current that discharges and recharges, as to discharge and recharge electric current negative pole, voltage sample positive pole, voltage sample negative pole, communication interface, communication interface can be CAN or SPI or SMBUS or I2C.Said supporting electric battery connecting line is to select according to different electric battery ports.
Electric battery adopts the series connection and the mode of parallel connection to form by a plurality of single batteries, and the balance of voltage of single battery can directly influence the normal use of electric battery in the electric battery.For example, n single battery B1, B2, B3 ... Bn is composed in series an electric battery, and the value of n is to be decided by reality electric battery to be tested here; If this electric battery is to be in series by 4 joint monocells, then the n value is exactly 4, and the like.The multipotency of battery voltage state testing device reads the voltage of 65535 single batteries, and the battery voltage state testing device is to adopt 16 bits to come addressing, so the maximal value of n is 65535.
The battery voltage test is divided into two kinds of situation: 1, the uniformity test between the single battery voltage in the electric battery; 2, the voltage magnitude scope of each single battery self test in the electric battery.
Consistance in the electric battery between the single battery voltage; The magnitude of voltage that is meant single battery in the electric battery will keep certain consistance; If promptly form the difference that obtains that deducts minimum maximum in all single battery magnitudes of voltage of electric battery in the reference range of setting; Just represent that this cell voltage consistance is qualified, otherwise just judge that this cell voltage consistance is defective.
Single battery self voltage magnitude scope in the electric battery: the magnitude of voltage that is meant every batteries of forming electric battery all has a highest standard value (HV) and minimum standard value (LV); If the magnitude of voltage of battery to be tested is between minimum standard and highest standard; Judge that then this self electric amplitude range is qualified, otherwise judge that this battery self amplitude range is defective.
, battery voltage after two kinds of acceptance conditions, just can judge that battery voltage is qualified above having satisfied.
The magnitude of voltage of each single battery of electric battery can obtain from 2 kinds of modes:
First kind, through obtaining battery voltage information among the MTVS in the battery voltage state testing device.
Second kind, through the GGS in the battery voltage state testing device, read-out voltage information from the information data table of the Gas Gauge IC of electric battery itself is judged.The data message of Gas Gauge IC is referring to numerous IC specifications.As: AD7280, AD821X, AD8280, ATA6870, ATA6871, BQ20Z90, BQ76PL536, BQ2060A, BQ20Z70, BQ20Z75, BQ2030, BQ29330, BQ77910, BQ78PL116, BQ76PL102, BQ77PL900, BQ78PL114, ISL78600, ISL78601, LTC6802-1, MAX11080 and MAX11068, XC886, OZ890, OZ8920, OZ8930, OZ8940, OZ9310.
Electric battery with the BQ76PL536 chip agreement that adopts TI company is an example, can read the magnitude of voltage of every batteries voltage VCELL1, VCELL2, VCELL3, VCELL4, VCELL5, VCELL6 in the electric battery.
Computing machine assigns the order of the consistance between the single battery voltage in the test battery group for the battery voltage state testing device; MTVS in the battery voltage state testing device or GGS receive order and handle, and can read the voltage of each single battery through MTVS; Or read among the electric battery Gas Gauge IC voltage of each single battery in the register through GGS.Send the cell voltage of measuring to computing machine through the communication unit in the battery voltage state testing device; Computing machine sorts each voltage to carry out rank order or backward from big to small; Find out maximum voltage and minimum voltage; Maximum voltage deducts the difference behind the minimum voltage, is called voltage maximum error value.This voltage maximum error value is judged the conforming important parameter of voltage exactly.
Judge that voltage maximum error value specifically has following three kinds of situation:
As shown in Figure 1; Under the stationary state of electric battery not being charged with discharge condition not; The battery voltage state testing device reads the magnitude of voltage of the every batteries in the electric battery through MTVS, or reads among the Gas Gauge IC of every batteries in the electric battery magnitude of voltage in the register through GGS.The battery voltage state testing device sends the single battery magnitude of voltage that records to computing machine; Computing machine is found out the difference of maximum voltage and minimum voltage to the contrast of sorting successively of the magnitude of voltage that obtains, and computing machine contrasts the reference value of this difference and setting; If this difference is smaller or equal to the referential data of setting; Computing machine just judges that this battery voltage consistance is up to standard, otherwise it is not up to standard then to be judged to be the voltage consistance; Computing machine is given the battery voltage state testing device through the instruction that communication unit sends corresponding result of determination; The battery voltage state testing device then sends corresponding operational order and gives the acousto-optic display unit, and the acousto-optic display unit sends the acousto-optic display message and shows whether this batteries voltage is qualified, and the simultaneous computer display interface also can show qualified or defective information.
As shown in Figure 2; Under battery pack charging status; For example adopt the 1A electric current to batteries charging; In the process of charging, the battery voltage state testing device reads the magnitude of voltage of the every batteries in the electric battery through MTVS, or reads among the Gas Gauge IC of every batteries in the electric battery magnitude of voltage in the register through GGS.The battery voltage state testing device sends the single battery magnitude of voltage that records to computing machine; Computing machine is found out the difference of maximum voltage and minimum voltage with the contrast of sorting successively of single battery voltage, and computing machine is with the contrast of the reference value of this difference and setting; If this difference is smaller or equal to the referential data of setting; Computing machine just judges that the consistance of this battery voltage is up to standard, otherwise it is not up to standard then to be judged to be the voltage consistance; Computing machine is given the battery voltage state testing device through the instruction that communication unit sends corresponding result of determination; The battery voltage state testing device then sends corresponding operational order and gives the acousto-optic display unit, and the acousto-optic display unit sends the acousto-optic display message and shows whether this batteries voltage is qualified, and the simultaneous computer display interface also can show qualified or defective information.
As shown in Figure 2; Under the battery power discharge state; For example: adopt the 1A electric current to battery power discharge; In the process of discharge, the battery voltage state testing device reads the magnitude of voltage of the every batteries in the electric battery through MTVS, or reads among the Gas Gauge IC of every batteries in the electric battery magnitude of voltage in the register through GGS.The battery voltage state testing device sends the single battery magnitude of voltage that records to computing machine, and computing machine is found out the difference of maximum voltage and minimum voltage with the contrast of sorting successively of single battery voltage; Computing machine is with the contrast of the reference value of this difference and setting; If this difference is smaller or equal to the referential data of setting, computing machine just judges that this battery voltage consistance is up to standard, otherwise; It is not up to standard then to be judged to be the voltage consistance; Then send corresponding operational order and give the acousto-optic display unit, the acousto-optic display unit sends the acousto-optic display message and shows whether this batteries voltage is qualified, and the simultaneous computer display interface also can show qualified or defective information.
The magnitude of voltage of each single battery all has a maximum reference value and minimum reference value in the electric battery, i.e. the voltage magnitude scope of single battery.If the battery voltage value in using will directly influence the normal use of whole battery group not in this amplitude range.So, just need test each battery voltage value in the electric battery, confirm whether the single battery voltage magnitude is up to standard.
Same, judge the battery voltage amplitude range, also be that three kinds of situation are arranged:
As shown in Figure 3; Under the stationary state of electric battery not being charged with discharge condition not; The battery voltage state testing device reads the magnitude of voltage of the every batteries in the electric battery through MTVS, or reads among the Gas Gauge IC of every batteries in the electric battery magnitude of voltage in the register through GGS.The battery voltage state testing device sends the single battery magnitude of voltage that records to computing machine; Computing machine compares the voltage that receives with maximum reference value of the voltage of setting and voltage minimum reference value; If magnitude of voltage is in maximum reference value of voltage and voltage minimum reference value scope; It is up to standard then to judge this battery voltage amplitude, otherwise is judged to be not up to standard.Computing machine is given the battery voltage state testing device through the instruction that communication unit sends corresponding result of determination; The battery voltage state testing device then sends corresponding operational order and gives the acousto-optic display unit; The acousto-optic display unit sends the acousto-optic display message and shows that this batteries is qualified, and the simultaneous computer display interface also can show qualified or defective information.
As shown in Figure 4; Under battery pack charging status; For example adopt the 1A electric current to batteries charging; In the process of charging, the battery voltage state testing device reads the magnitude of voltage of the every batteries in the electric battery through MTVS, or reads among the Gas Gauge IC of every batteries in the electric battery magnitude of voltage in the register through GGS.The battery voltage state testing device sends the single battery magnitude of voltage that records to computing machine; Computing machine compares the voltage that receives with maximum reference value of the voltage of setting and voltage minimum reference value; If magnitude of voltage is in maximum reference value of voltage and voltage minimum reference value scope; It is up to standard then to judge this battery voltage amplitude, otherwise is judged to be not up to standard.Computing machine is given the battery voltage state testing device through the instruction that communication unit sends corresponding result of determination; The battery voltage state testing device then sends corresponding operational order and gives the acousto-optic display unit; The acousto-optic display unit sends the acousto-optic display message and shows that this batteries is qualified, and the simultaneous computer display interface also can show qualified or defective information.
As shown in Figure 4; Under battery pack charging status; For example adopt the 1A electric current to battery power discharge; In the process of discharge, the battery voltage state testing device reads the magnitude of voltage of the every batteries in the electric battery through MTVS, or reads among the Gas Gauge IC of every batteries in the electric battery magnitude of voltage in the register through GGS.The battery voltage state testing device sends the single battery magnitude of voltage that records to computing machine; Computing machine compares the voltage that receives with maximum reference value of the voltage of setting and voltage minimum reference value; If magnitude of voltage is in maximum reference value of voltage and voltage minimum reference value scope; It is up to standard qualified then to judge this battery voltage amplitude, otherwise is judged to be not up to standard.Computing machine is given the battery voltage state testing device through the instruction that communication unit sends corresponding result of determination; The battery voltage state testing device then sends corresponding operational order and gives the acousto-optic display unit; The acousto-optic display unit sends the acousto-optic display message and shows that this batteries is qualified, and the simultaneous computer display interface also can show qualified or defective information.
Whether the present invention can judge battery voltage easily in the electric battery use quality of balance is qualified, can pick out underproof single battery and replacing in the electric battery, so just can reduce because of changing the cost problem that whole battery group is brought.
Claims (3)
1. the method for testing of a battery voltage state is characterized in that may further comprise the steps:
A, preparation data processing equipment, battery voltage state testing device, the battery voltage state testing device comprises charge-discharge machine CDS, acousto-optic display unit, communication unit module GGS, relay tip unit, many temperature voltages acquisition module MTVS;
B, battery voltage state testing device are static in electric battery, read the magnitude of voltage of each single battery under each state in the electric battery respectively under the charging, three kinds of states of discharge, and the voltage value data that reads is sent to data processing equipment;
C, data processing equipment are done following two kinds of processing with the profiles under the various states:
C1 wherein: data processing equipment is arranged each voltage value data under the same state with from big to small order or backward, find out maximum voltage value and minimum voltage value, writes down its difference; With this numerical value and the contrast of corresponding reference numerical value, if this difference smaller or equal to the corresponding reference data, judges that then electric battery consistance under this state is up to standard; Otherwise, judge that then consistance is not up to standard under this state;
C2: data processing equipment compares each voltage value data under the same state with maximum reference value of corresponding voltage and minimum reference value; If magnitude of voltage in the interval range of maximum reference value and minimum reference value, judges that then electric battery amplitude under this state is up to standard; Otherwise, judge that then amplitude is not up to standard under this state;
D, data processing equipment are issued the battery voltage state testing device with the instruction of the result of determination of correspondence; The battery voltage state testing device then sends corresponding operational order and gives the acousto-optic display unit; The acousto-optic display unit is sounded and display message shows whether this batteries voltage is qualified, and the data processing equipment display interface also can show qualified or defective information simultaneously.
2. the method for testing of battery voltage state according to claim 1 is characterized in that:
Said battery voltage value is gathered by the many temperature voltages acquisition module MTVS in the battery voltage state testing device.
3. the method for testing of battery voltage state according to claim 1 is characterized in that:
Said battery voltage value is by the read-out voltage information from the information data table of the Gas Gauge IC of electric battery itself of the communication unit module GGS in the battery voltage state testing device.
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Application publication date: 20120711 |