CN103336246A - Device and method for monitoring storage battery - Google Patents
Device and method for monitoring storage battery Download PDFInfo
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- CN103336246A CN103336246A CN2013102700403A CN201310270040A CN103336246A CN 103336246 A CN103336246 A CN 103336246A CN 2013102700403 A CN2013102700403 A CN 2013102700403A CN 201310270040 A CN201310270040 A CN 201310270040A CN 103336246 A CN103336246 A CN 103336246A
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Abstract
The invention provides a device for monitoring a storage battery, the storage battery comprises a plurality of battery packs connected in series between a positive DC bus and a negative DC bus via a power line, and each battery pack comprises a plurality of batteries connected in series. The device comprises a monitoring unit and a plurality of battery detection units, wherein each battery detection unit is connected to one of the battery packs via a first test line to obtain battery performance parameters, and the battery performance parameters are converted into a carrier signal, which is sent to the positive DC bus and the negative DC bus via a first communication line, the power line for connecting the battery packs and the batteries; the monitoring unit is connected to the positive DC bus and the negative DC bus via a second communication line and is used for receiving the carrier signal and storing the battery performance parameters corresponding to the carrier signal. The invention further provides a corresponding storage battery monitoring method. According to the invention, the battery performance parameters are obtained by detecting the carrier signal transmitted by the power line, the batteries, the positive DC bus and the negative DC bus, as a result, the storage battery is monitored.
Description
Technical field
The present invention relates to the accumulator monitoring field, more particularly, relate to a kind of storage battery monitoring device and method.
Background technology
Accumulator is as the standby power supply of the vehicles such as railway locomotive, subway, automobile, steamer, naval vessels, tank and transformer station, communication base station, machine room and start power supply, play a part very important, for example: for railway electric locomotive, before locomotive liter bow is flowed, provide power supply by accumulator for control circuit, flowed preceding preparation to finish locomotive; Provide power supply by accumulator for rising the bow compressor, rise pantograph; In locomotive operation, in case rectification control power supply breaks down, can excise rectification control power supply, keep the locomotive failure operation by storage battery power supply, when locomotive normally moves, battery pack and electrical locomotive power parallel running strobe to locomotive rectification control power supply, to reduce the ripple factor of rectification control power supply.For diesel locomotive: when diesel engine is not worked, utility appliance, control loop, the lighting circuit power supply of electric battery on the locomotive; Provide electric energy by electric battery when diesel engine starting, starter-generator, drives crankshaft of diesel engine and rotates by front gear box universal shaft and pulling electric generator rotor as series excitation DC motor; In the locomotive normal course of operation control power supply is strobed, to reduce the ripple factor of control power supply, improve the quality of control power supply; In locomotive operation, when the auxiliary generator fault, supply with the locomotive control electricity consumption, should acute running to keep locomotive.
In locomotive, general 4 joints of accumulator are in one group of 12 battery case made of iron that are installed on the locomotive bottom, altogether by 48 batteries tandem workings, as shown in Figure 1.Because the locomotive storage batteries condition of work is very abominable: operating temperature range-40 ℃～50 ℃, electric current and the charging current of sparking is bigger, also bear lasting vibration and impact, thereby accumulator failure rate height, life-span are short in locomotive, the safe operation of locomotive is caused adverse influence.Locomotive storage batteries is monitored, in time grasp the duty of accumulator, can in time find the accumulator that falls behind and changed, thereby significantly improve the battery service management level, improve the reliability of locomotive operation.
In locomotive, be installed at present the common pointer instrument on the operator's console of pulpit, only show voltage and the charging and discharging currents of battery pack simply, can't effectively monitor accumulator.
And the equipment of monitoring at common accumulator at present is divided into centralized and split type two types:
(1) centralized accumulator monitoring equipment is realized functions such as detection, demonstration, storage, warning, communications at an equipment.
(2) split accumulator monitoring equipment comprises a main frame and many slaves, intercoms mutually by wired or wireless mode between main frame and each slave.Finish control, demonstration, storage, warning task by main frame, slave detects a joint or a few batteries, and will detect data and send main frame under the control of main frame.
Yet centralized accumulator monitoring equipment can't send out the accumulator monitoring data under the locomotive environment, and volume is also too huge, therefore is not suitable for the locomotive storage batteries monitoring.
For split accumulator monitoring equipment, if adopt wireless mode to communicate by letter between main frame and each slave, though do not need to lay specially any order wire, its power consumption is higher, and can produce interference to other equipment.When having wall or metal object to intercept between main frame and the slave, main frame can't be communicated by letter with slave, therefore is not suitable for the accumulator monitoring in the locomotive.
If communicate by letter by the telecommunication cable of laying between main frame and each slave, though its reliable communications, low in energy consumption, antijamming capability is high, it need burrow to lay telecommunication cable in battery case boring, so also can't use at locomotive.
Summary of the invention
The technical problem to be solved in the present invention is, at the problem of above-mentioned accumulator monitoring inconvenience, provides a kind of storage battery monitoring device and method.
The technical scheme that the present invention solves the problems of the technologies described above is, a kind of storage battery monitoring device is provided, described accumulator comprises that a plurality of electric battery and each electric battery that are connected in series between positive direct-current bus and the negative dc bus by line of electric force comprise a plurality of batteries that are connected in series, comprise monitoring unit and a plurality of battery detection unit, wherein: each described battery detection unit is connected to one of them electric battery obtaining its battery performance parameter by first p-wire, and described battery performance parameter is converted into carrier signal via first order wire, the line of electric force that connects electric battery, battery sends to positive direct-current bus and negative dc bus; Described monitoring unit is connected to positive direct-current bus and negative dc bus with the reception carrier signal and stores the battery performance parameter of carrier signal correspondence by the second communication line.
In storage battery monitoring device of the present invention, described first p-wire comprises the first voltage tester line that is connected to each battery two ends in the electric battery, described first order wire is connected to the electric battery two ends, described battery detection unit comprises the first test subelement, the first communicator unit and the first control subelement, wherein: the described first test subelement, be used for via first each battery of voltage tester line test battery group voltage, via the discharge current of the first order wire test battery group; The described first communicator unit is used for being converted into carrier signal from the battery performance parameter of the first control subelement and sends to first order wire and will be converted into steering order by the carrier signal that first order wire receives sending to the first control subelement; The described first control subelement is for sending to the first communicator unit according to the battery performance parameter of testing the test process of subelement from the steering order control first of the first communicator unit and described first test of testing subelement is obtained.
In storage battery monitoring device of the present invention, described monitoring unit comprises current sensor, the first testing current line, the second test subelement, second communication subelement, second control subelement and the storing sub-units, wherein: described current sensor is set on positive direct-current bus or the negative dc bus, and the described first testing current line is connected to current sensor; The described second test subelement is used for via first testing current line test dc bus current and via voltage between second communication line test positive direct-current bus and negative dc bus; Described second communication subelement, be used for to be converted into carrier signal from the steering order of the second control subelement and send to positive direct-current bus and negative dc bus via the second communication line, and will be converted into battery performance parameter via the carrier signal that the second communication line receives from positive direct-current bus and negative dc bus and send to the second control subelement; The described second control subelement, be used for generating steering order and test the test process of subelement and send to the second communication subelement to control second, and the battery performance parameter that will reach from the second communication subelement from the test data of the second test subelement store storing sub-units into.
In storage battery monitoring device of the present invention, described first order wire is coupled to line of electric force by inductive coil, described first p-wire comprises the second voltage tester line that is connected to each battery two ends in the electric battery and the second testing current line that is connected to the electric battery two ends, described battery detection unit comprises the 3rd test subelement, third communication subelement and the 3rd control subelement, wherein: described the 3rd test subelement is used for the voltage via second each battery of voltage tester line test battery group, discharge current via the second testing current line test battery group; Described third communication subelement is used for being converted into carrier signal from the battery performance parameter of the 3rd control subelement and sends to first order wire and will be converted into steering order by the carrier signal that first order wire receives sending to the 3rd control subelement; The described the 3rd controls subelement, is used for also the battery performance parameter that the described the 3rd test of testing subelement obtains being sent to third communication subelement according to the test process of controlling the 3rd test subelement from the steering order of third communication subelement.
In storage battery monitoring device of the present invention, described second communication line is coupled to positive direct-current bus or negative dc bus by inductive coil, described monitoring unit comprises current sensor, the 3rd testing current line, tertiary voltage p-wire, the 4th test subelement, four-way letter subelement, the 4th control subelement and storing sub-units, wherein: described current sensor is set on positive direct-current bus or the negative dc bus, and described the 3rd testing current line is connected to current sensor; Described the 4th test subelement is used for via the 3rd testing current line test dc bus current and via voltage between tertiary voltage p-wire test positive direct-current bus and negative dc bus; Described four-way letter subelement, be used for to be converted into carrier signal from the steering order of the 4th control subelement and send to positive direct-current bus and negative dc bus via the second communication line, and will be converted into battery performance parameter via the carrier signal that the second communication line receives from positive direct-current bus and negative dc bus and send to the 4th control subelement; Described the 4th control subelement, be used for the generation steering order and test the test process of subelement and send to four-way letter subelement to control the 4th, and will believe that the battery performance parameter of subelement stores storing sub-units into from the test data of the 4th test subelement and from four-way.
In storage battery monitoring device of the present invention, described battery detection unit comprises first trap and the first power supply subelement, the described first power supply subelement is used to each subelement power supply in the battery detection unit, and via first trap from the first order wire power taking; Described monitoring unit comprises second trap and second source subelement, and described second source subelement is used to each subelement power supply in the monitoring unit, and via second trap from the power taking of second communication line.
In storage battery monitoring device of the present invention, described monitoring unit is installed in the pulpit and has the first radio communication subelement, described monitoring device comprises that also handheld terminal and this handheld terminal comprise the second wireless radio communication subelement, and described handheld terminal is communicated by letter with the first radio communication subelement of pulpit by the second radio communication subelement.
The present invention also provides a kind of accumulator monitoring method, and described accumulator comprises that a plurality of electric battery and each electric battery that are connected in series between positive direct-current bus and the negative dc bus by line of electric force comprise a plurality of batteries that are connected in series, and may further comprise the steps:
(a) battery detection unit detects battery performance parameter via first p-wire, and described battery performance parameter is converted into carrier signal sends to positive direct-current bus and negative dc bus via first order wire, the line of electric force that connects this electric battery, battery;
(b) monitoring unit via the second communication line from positive direct-current bus and negative dc bus reception carrier signal and store the battery performance parameter of carrier signal correspondence.
In accumulator monitoring method of the present invention, described step (a) comprising:
(a1) via line of electric force, battery and the reception of first order wire carrier signal from positive direct-current bus and negative dc bus, and described carrier signal is converted into steering order, described first order wire is directly connected to line of electric force or is coupled to line of electric force by inductive coil;
(a2) via the voltage tester line and according to the voltage of each battery in the described steering order control test battery group, via first order wire or the discharge current of testing current line test battery group independently;
(a3) battery performance parameter that will comprise each batteries voltage and discharge current is converted into carrier signal and sends to positive direct-current bus and negative dc bus via first order wire, the line of electric force that connects this electric battery, battery.
In accumulator monitoring method of the present invention, described step (b) comprising:
(b1) steering order is converted into carrier signal and send to positive direct-current bus and negative dc bus via the second communication line, described second communication line is directly connected to positive direct-current bus and negative dc bus, perhaps is coupled to positive direct-current bus or negative dc bus by inductive coil;
(b2) by current sensor and testing current line test dc bus current and via second communication line or voltage between voltage tester line test positive direct-current bus and negative dc bus independently;
(b3) be converted into battery performance parameter by the second communication line from positive direct-current bus and negative dc bus reception carrier signal and with carrier signal;
(b4) the described battery performance parameter of storage and the dc bus current that records, voltage.
Storage battery monitoring device of the present invention and method detect the battery performance parameter that obtains by transmitting with carrier system at line of electric force, battery and dc bus, thereby have realized the monitoring of accumulator.The present invention is specially adapted to the accumulator monitoring on the vehicles such as railway locomotive, subway, automobile, steamer, naval vessels, tank, can avoid at battery case boring shop line, and can guarantee the quality of monitor signal also to can be used for occasions such as transformer station, communication base station, machine room.
Description of drawings
Fig. 1 is the synoptic diagram of storage battery monitoring device embodiment of the present invention.
Fig. 2 is the structural representation of battery detection unit embodiment among Fig. 1.
Fig. 3 is the structural representation of monitoring unit embodiment among Fig. 1.
Fig. 4 is the structural representation of another example of battery detection unit among Fig. 1.
Fig. 5 is the structural representation of another example of monitoring unit among Fig. 1.
Fig. 6 is the schematic flow sheet of accumulator monitoring method embodiment of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
As shown in Figure 1, be the synoptic diagram of storage battery monitoring device embodiment of the present invention, wherein accumulator comprises that a plurality of electric battery 10 and each electric battery 10 that are connected in series between positive direct-current bus 30 and the negative dc bus 40 by line of electric force comprise a plurality of batteries that are connected in series 12.Above-mentioned battery 12 can be the 2V lead-acid battery, perhaps is the lead-acid battery of 4V, 6V, 12V or other electric pressures; Can for 1.2V, 2.4V or other electric pressures nickel-cadmium/nickel-hydrogen cell; Also can be the lithium battery of 3.4V, 7.8V or other electric pressures, and the battery of other kinds.
Storage battery monitoring device in the present embodiment comprises monitoring unit 21 and a plurality of battery detection unit 11, wherein each battery detection unit 11 is connected to one of them electric battery 10 obtaining its battery performance parameter by first p-wire, and battery performance parameter is converted into carrier signal sends to positive direct-current bus 30 and negative dc bus 40 via the battery of first order wire, the line of electric force that connects this electric battery and serial connection; It for example can be pilothouse of railway locomotive etc. that monitoring unit 21 is installed on pulpit 20(), it is connected to positive direct-current bus 30 and negative dc bus 40 with the reception carrier signal and stores the battery performance parameter of carrier signal correspondence by the second communication line.
Above-mentioned positive direct-current bus 30 and negative dc bus 40 can be connected to DC starting generator 50 and other loads 60, thereby are the power supply of these DC load or power taking from the direct supply.
When being used for the vehicles such as railway locomotive when above-mentioned accumulator, above-mentioned each electric battery 10 and corresponding battery detection unit 11 are installed in the battery case 10 of a sealing, and each described battery case is provided with two line of electric force splicing ears.The storage battery monitoring device of present embodiment, battery by line of electric force and serial connection is delivered to dc bus with carrier signal, therefore need not to send battery performance parameter such as battery detection unit 11 detected cell voltages, internal resistance to be installed on the pulpit monitoring unit 21 in the battery case punching to lay special signal wire, can satisfy the accumulator monitoring demand of special occasions such as railway locomotive.
As shown in Figure 2, above-mentioned battery detection unit 11 comprises the first test subelement 111, the first communicator unit 113 and the first control subelement 112, and first p-wire comprises 13 two ends that are connected to electric battery 10 of the first voltage tester line, 14, the first order wires that are connected to each battery 12 two ends in the electric battery 10.In the present embodiment, battery discharge and testing current have used first order wire 13, and in actual applications, battery discharge and testing current also can adopt independent testing current line (this moment, first order wire 13 need not to be connected to the two ends of electric battery, for example can be connected to the two ends of one of them battery).The above-mentioned first test subelement 111, the first communicator unit 113 and the first control subelement 112 can be made of in conjunction with peripheral circuit the software that runs on IC.
The first test subelement 111 is connected to the two ends of each battery 12 in the electric battery by the first voltage tester line 14 and is connected to the two ends of electric battery via first order wire 13.In the present embodiment, this first test subelement 111 is measured the monomer voltage of every batteries 12 by the first voltage tester line 14 under the control of the first control subelement 112.The first test subelement 111 is also under the control of the first control subelement 112, make electric battery pass through first order wire 13, (this discharge current signal is pumping signal to the discharge current signal of generation setpoint frequency, because there is internal resistance in battery, therefore can produce the voltage signal of same frequency at battery, be response signal), under the control of the first control subelement 112, the current signal on first test subelement 111 synchronized samplings, first order wire 13 and the voltage signal of the same frequency on the first voltage tester line 14 (current signal by sampling and the voltage signal of same frequency can calculate the internal resistance of battery).
The first communicator unit, 113 1 ends link to each other with the first control subelement 112, the other end is connected first order wire 13, and are used for being converted into carrier signal from the battery performance parameter (comprising voltage, the internal resistance of each batteries) of the first control subelement 112 and send to first order wire 13 and will be converted into steering order by the carrier signal that first order wire receives sending to the first control subelement 112.Especially, adopt Transistor-Transistor Logic level between the above-mentioned first control subelement 112 and the first communicator unit 113, transmit data with serial mode.The first communicator unit 113 utilizes first order wire 13, battery 12 line of electric force and the connection battery own to realize the transmitting-receiving of carrier signal.
In above-mentioned storage battery monitoring device, battery detection unit 11 also can comprise first trap 114 and the first power supply subelement 115, and wherein the first power supply subelement 115 is used to the first test subelement 111, the first communicator unit 113 and the first control subelement 112 that reliable and stable power supply is provided.This first power supply subelement 115 via first trap 114 from 13 power takings of first order wire, but these first trap, 114 filtering carrier signals, thereby preventing that carrier signal from producing the first power supply subelement 115 disturbs.
As shown in Figure 3, the monitoring unit 21 that is positioned at pulpit 20 comprises current sensor 22, the first testing current line 23, the second test subelement 211, second communication line 24, second communication subelement 213, second control subelement 212 and the storing sub-units, wherein current sensor 22 is set on positive direct-current bus 30 or the negative dc bus 40, and the first testing current line 23 is connected to current sensor 22.The above-mentioned second test subelement 211, second communication subelement 213, the second control subelement 212 can be made of in conjunction with peripheral circuit the software that runs on IC.
The second test subelement 211 is used under 212 controls of the second control subelement, by the first testing current line, 23 test dc bus currents and by second communication line 24 test positive direct- current bus 30 and 40 voltages of negative dc bus.
In above-mentioned monitoring unit 21, also can comprise second trap 214 and second source subelement 215, wherein second source subelement 215 is used to the second test subelement 211, second communication subelement 213, the second control subelement 212 and storing sub-units that reliable and stable power supply is provided.This second source subelement via second trap 214 from 24 power takings of second communication line, but these second trap, 214 filtering carrier signals, thereby preventing that carrier signal from producing second source subelement 215 disturbs.。
Observation process in the above-mentioned storage battery monitoring device is as follows: at first the second control subelement 212 that passes through of monitoring unit 21 (adopts Transistor-Transistor Logic level to second communication subelement 213 sending controling instructions, transmit data with serial mode), second communication subelement 213 is converted into carrier signal with steering order, and with carrier signal successively via second communication line 24, dc bus, the line of electric force that connects battery, battery 12,113, the first communicator unit 113, the first communicator unit that first order wire 13 sends to battery detection unit 11 are with the reception carrier signal and be reduced to steering order and send to the first control subelement 112; The first test subelement 111 is according to from the steering order of the first control subelement 112 electric battery being tested to obtain battery performance parameter; The first communicator unit 113 is converted into above-mentioned battery performance parameter carrier signal and carrier signal is sent to second communication subelement 213 via line of electric force, dc bus, the second communication line 24 of first order wire 13, battery 12, connection battery successively, second communication subelement 213 is reduced to battery performance parameter with carrier signal and sends to the second control subelement 212, and stores battery performance parameter into storing sub-units by the second control subelement 212.
In above-mentioned storage battery monitoring device, monitoring unit is installed in the pulpit and has the first radio communication subelement, storage battery monitoring device can comprise that also handheld terminal and this handheld terminal comprise the second radio communication subelement, thereby handheld terminal can be communicated by letter with the first radio communication subelement of monitoring unit by the second radio communication subelement, to obtain the data in the storing sub-units.Especially, this handheld terminal is that intelligent terminal also can have the usb communication interface, thereby communicates by letter with PC, in the data importing PC, by analysis software the duty of accumulator, direct supply, dc load is analyzed.
In addition, also can comprise in the monitoring unit 21 and show that subelement detects data to show voltage, electric current etc., also can comprise RS485 communicator unit so that monitoring unit 21 is communicated by letter with locomotive TAX case, receive the locomotive operation information that the TAX case sends, information such as time, kilometer post, the speed of a motor vehicle, train number, engine number for example, and send the battery performance parameter that detection data and the battery detection unit 11 of monitoring unit 21 sends to the TAX case.
As shown in Figure 4, be the synoptic diagram of battery detection unit 11 another embodiment among Fig. 1.Among this embodiment, first order wire 15 is coupled to line of electric force by inductive coil, and the second testing current line 13' that first p-wire comprises the second voltage tester line 14' that is connected to each battery two ends in the electric battery and is connected to the electric battery two ends, battery detection unit 11 comprises the 3rd test subelement 111', third communication subelement 113' and the 3rd control subelement 112', wherein: the 3rd test subelement 111' is used for the voltage via second each battery of voltage tester line 14' test battery group, discharge current via the second testing current line 13' test battery group; Third communication subelement 113' is used for being converted into carrier signal from the battery performance parameter of the 3rd control subelement 112' and sends to first order wire and will be converted into steering order by the carrier signal that first order wire receives sending to the 3rd control subelement 112'; The 3rd controls subelement 112' is used for sending to third communication subelement 113' according to the test process of controlling the 3rd test subelement 111' from the steering order of third communication subelement 113' and with the 3rd battery performance parameter of testing the test acquisition of subelement 111'.
As shown in Figure 5, be the synoptic diagram of monitoring unit 21 another embodiment among Fig. 1.Among this embodiment, second communication line 25 is coupled to positive direct-current bus or negative dc bus by inductive coil, monitoring unit 21 comprises current sensor 22, the 3rd testing current line 23', tertiary voltage p-wire 24', the 4th test subelement 211', four-way letter subelement 213', the 4th control subelement 212' and storing sub-units, wherein: current sensor is set on positive direct-current bus or the negative dc bus, and the 3rd testing current line 23' is connected to current sensor; The 4th test subelement 211' is used for via the 3rd testing current line 23' test dc bus current and via voltage between tertiary voltage p-wire 24' test positive direct-current bus and negative dc bus; Four-way letter subelement 213' is used for being converted into carrier signal from the steering order of the 4th control subelement 212' and sends to positive direct-current bus and negative dc bus via the second communication line, and will be converted into battery performance parameter via the carrier signal that the second communication line receives from positive direct-current bus and negative dc bus and send to the 4th control subelement 212'; The 4th control subelement 212' is used for the generation steering order to be tested the test process of subelement 211' and sends to four-way letter subelement 213' to control the 4th, and will believe that the battery performance parameter of subelement 213' stores storing sub-units into from the test data of the 4th test subelement 211' and from four-way.
As shown in Figure 6, it is the schematic flow sheet of accumulator monitoring method embodiment of the present invention, wherein accumulator comprises that a plurality of electric battery and each electric battery that are connected in series between positive direct-current bus and the negative dc bus by line of electric force comprise a plurality of batteries that are connected in series, and this method may further comprise the steps:
Step S61: battery detection unit detects battery performance parameter via first p-wire, and battery performance parameter is converted into carrier signal sends to positive direct-current bus and negative dc bus via first order wire, the line of electric force that connects this electric battery, battery.Above-mentioned first order wire is directly connected to line of electric force or is coupled to line of electric force by inductive coil.
When specific implementation, battery detection unit at first receives carrier signal from positive direct-current bus and negative dc bus via line of electric force, battery and first order wire, and carrier signal is converted into steering order; Then via the voltage tester line and according to the voltage of each battery in the steering order control test battery group, via the discharge current of first order wire (or independently testing current line) test battery group; At last voltage and discharge current data are converted into carrier signal and send to positive direct-current bus and negative dc bus via first order wire, the line of electric force that connects this electric battery, battery.
In this step, the voltage signal of detected each battery and the internal resistance that current signal calculates each battery when battery detection unit can be according to battery discharge, send to monitoring unit by carrier signal, detected voltage signal and current signal directly send to monitoring unit by carrier signal in the time of also can be with battery discharge, by the internal resistance of monitoring unit calculating accumulator.
Step S62: monitoring unit via the second communication line from positive direct-current bus and negative dc bus reception carrier signal and store the battery performance parameter of carrier signal correspondence.Above-mentioned second communication line is directly connected to positive direct-current bus and negative dc bus, perhaps is coupled to positive direct-current bus or negative dc bus by inductive coil.
When specific implementation, monitoring unit is converted into steering order carrier signal and sends to positive direct-current bus and negative dc bus via the second communication line earlier; Then by current sensor and testing current line test dc bus current and via voltage between second communication line (or independently voltage tester line) test positive direct-current bus and negative dc bus; And be converted into battery performance parameter by the second communication line from positive direct-current bus and negative dc bus reception carrier signal and with carrier signal; Last monitoring unit is stored described battery performance parameter and the dc bus current that records, voltage.
In this step, if monitoring unit comprises current signal in the discharge process and the voltage signal of each battery from the carrier signal that dc bus receives, the then monitoring unit internal resistance that also can calculate each battery according to the voltage signal of above-mentioned discharge current signal and each battery.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. storage battery monitoring device, described accumulator comprises that a plurality of electric battery and each electric battery that are connected in series between positive direct-current bus and the negative dc bus by line of electric force comprise a plurality of batteries that are connected in series, it is characterized in that: comprise monitoring unit and a plurality of battery detection unit, wherein: each described battery detection unit is connected to one of them electric battery obtaining its battery performance parameter by first p-wire, and described battery performance parameter is converted into carrier signal via first order wire, the line of electric force that connects electric battery, battery sends to positive direct-current bus and negative dc bus; Described monitoring unit is connected to positive direct-current bus and negative dc bus with the reception carrier signal and stores the battery performance parameter of carrier signal correspondence by the second communication line.
2. storage battery monitoring device according to claim 1, it is characterized in that: described first p-wire comprises the first voltage tester line that is connected to each battery two ends in the electric battery, described first order wire is connected to the electric battery two ends, described battery detection unit comprises the first test subelement, the first communicator unit and the first control subelement, wherein: the described first test subelement, be used for via first each battery of voltage tester line test battery group voltage, via the discharge current of the first order wire test battery group; The described first communicator unit is used for being converted into carrier signal from the battery performance parameter of the first control subelement and sends to first order wire and will be converted into steering order by the carrier signal that first order wire receives sending to the first control subelement; The described first control subelement is for sending to the first communicator unit according to the battery performance parameter of testing the test process of subelement from the steering order control first of the first communicator unit and described first test of testing subelement is obtained.
3. storage battery monitoring device according to claim 2, it is characterized in that: described monitoring unit comprises current sensor, the first testing current line, the second test subelement, second communication subelement, second control subelement and the storing sub-units, wherein: described current sensor is set on positive direct-current bus or the negative dc bus, and the described first testing current line is connected to current sensor; The described second test subelement is used for via first testing current line test dc bus current and via voltage between second communication line test positive direct-current bus and negative dc bus; Described second communication subelement, be used for to be converted into carrier signal from the steering order of the second control subelement and send to positive direct-current bus and negative dc bus via the second communication line, and will be converted into battery performance parameter via the carrier signal that the second communication line receives from positive direct-current bus and negative dc bus and send to the second control subelement; The described second control subelement, be used for generating steering order and test the test process of subelement and send to the second communication subelement to control second, and the battery performance parameter that will reach from the second communication subelement from the test data of the second test subelement store storing sub-units into.
4. storage battery monitoring device according to claim 1, it is characterized in that: described first order wire is coupled to line of electric force by inductive coil, described first p-wire comprises the second voltage tester line that is connected to each battery two ends in the electric battery and the second testing current line that is connected to the electric battery two ends, described battery detection unit comprises the 3rd test subelement, third communication subelement and the 3rd control subelement, wherein: described the 3rd test subelement is used for the voltage via second each battery of voltage tester line test battery group, discharge current via the second testing current line test battery group; Described third communication subelement is used for being converted into carrier signal from the battery performance parameter of the 3rd control subelement and sends to first order wire and will be converted into steering order by the carrier signal that first order wire receives sending to the 3rd control subelement; The described the 3rd controls subelement, is used for also the battery performance parameter that the described the 3rd test of testing subelement obtains being sent to third communication subelement according to the test process of controlling the 3rd test subelement from the steering order of third communication subelement.
5. storage battery monitoring device according to claim 4, it is characterized in that: described second communication line is coupled to positive direct-current bus or negative dc bus by inductive coil, described monitoring unit comprises current sensor, the 3rd testing current line, tertiary voltage p-wire, the 4th test subelement, four-way letter subelement, the 4th control subelement and storing sub-units, wherein: described current sensor is set on positive direct-current bus or the negative dc bus, and described the 3rd testing current line is connected to current sensor; Described the 4th test subelement is used for via the 3rd testing current line test dc bus current and via voltage between tertiary voltage p-wire test positive direct-current bus and negative dc bus; Described four-way letter subelement, be used for to be converted into carrier signal from the steering order of the 4th control subelement and send to positive direct-current bus and negative dc bus via the second communication line, and will be converted into battery performance parameter via the carrier signal that the second communication line receives from positive direct-current bus and negative dc bus and send to the 4th control subelement; Described the 4th control subelement, be used for the generation steering order and test the test process of subelement and send to four-way letter subelement to control the 4th, and will believe that the battery performance parameter of subelement stores storing sub-units into from the test data of the 4th test subelement and from four-way.
6. according to claim 3 or 5 described storage battery monitoring devices, it is characterized in that: described battery detection unit comprises first trap and the first power supply subelement, the described first power supply subelement is used to each subelement power supply in the battery detection unit, and via first trap from the first order wire power taking; Described monitoring unit comprises second trap and second source subelement, and described second source subelement is used to each subelement power supply in the monitoring unit, and via second trap from the power taking of second communication line.
7. storage battery monitoring device according to claim 6, it is characterized in that: described monitoring unit is installed in the pulpit and has the first radio communication subelement, described monitoring device comprises that also handheld terminal and this handheld terminal comprise the second wireless radio communication subelement, and described handheld terminal is communicated by letter with the first radio communication subelement of pulpit by the second radio communication subelement.
8. accumulator monitoring method, described accumulator comprises that a plurality of electric battery and each electric battery that are connected in series between positive direct-current bus and the negative dc bus by line of electric force comprise a plurality of batteries that are connected in series, and is characterized in that: may further comprise the steps:
(a) battery detection unit detects battery performance parameter via first p-wire, and described battery performance parameter is converted into carrier signal sends to positive direct-current bus and negative dc bus via first order wire, the line of electric force that connects this electric battery, battery;
(b) monitoring unit via the second communication line from positive direct-current bus and negative dc bus reception carrier signal and store the battery performance parameter of carrier signal correspondence.
9. accumulator monitoring method according to claim 1, it is characterized in that: described step (a) comprising:
(a1) via line of electric force, battery and the reception of first order wire carrier signal from positive direct-current bus and negative dc bus, and described carrier signal is converted into steering order, described first order wire is directly connected to line of electric force or is coupled to line of electric force by inductive coil;
(a2) via the voltage tester line and according to the voltage of each battery in the described steering order control test battery group, via first order wire or the discharge current of testing current line test battery group independently;
(a3) battery performance parameter that will comprise each batteries voltage and discharge current is converted into carrier signal and sends to positive direct-current bus and negative dc bus via first order wire, the line of electric force that connects this electric battery, battery.
10. accumulator monitoring method according to claim 9, it is characterized in that: described step (b) comprising:
(b1) steering order is converted into carrier signal and send to positive direct-current bus and negative dc bus via the second communication line, described second communication line is directly connected to positive direct-current bus and negative dc bus, perhaps is coupled to positive direct-current bus or negative dc bus by inductive coil;
(b2) by current sensor and testing current line test dc bus current and via second communication line or voltage between voltage tester line test positive direct-current bus and negative dc bus independently;
(b3) be converted into battery performance parameter by the second communication line from positive direct-current bus and negative dc bus reception carrier signal and with carrier signal;
(b4) the described battery performance parameter of storage and the dc bus current that records, voltage.
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