CN108832206A - A kind of battery monitoring device for energy storage heap - Google Patents
A kind of battery monitoring device for energy storage heap Download PDFInfo
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- CN108832206A CN108832206A CN201810640545.7A CN201810640545A CN108832206A CN 108832206 A CN108832206 A CN 108832206A CN 201810640545 A CN201810640545 A CN 201810640545A CN 108832206 A CN108832206 A CN 108832206A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of monitoring device for energy storage heap, first voltage measuring unit is connected in parallel with the first wiring group, third wiring group；Second voltage measuring unit is connected in parallel with the second wiring group, the 4th wiring group；The first voltage measuring unit, the output of second voltage measuring unit are connected with the input of control unit；The positive terminal of first wiring group is connected through over sampling switching switch, sample resistance module with the positive terminal of the second wiring group；The triggering end or communication ends of sampling switching switch are connected with control unit；The input of linear amplifier circuit is connected with sample resistance module；The bus communication module is connected with control unit communication；First electric-controlled switch triggering terminals, the second electric-controlled switch triggering terminals connect with the output-parallel of bus communication module；The present invention optimizes the use management of charging pile energy storing structure compared with the prior art.
Description
Technical field
The present invention relates to charging pile technical fields, and in particular to charging pile energy storage controls application field.
Background technique
Currently, each charging pile feeder ear of charging station is connected in parallel on bus end, bus end is connected with electric power input again, in order to
Guarantee that under electric power input power blackout situation charging pile remains to maintain the work of certain time, bus end can connect battery etc. simultaneously and store up
Energy device can use multiple batteries to form energy storage heap in a manner of series, parallel combination connection to guarantee stored energy capacitance, and
It is whole to be connected in parallel with bus end.The monitoring of the capacity or remaining capacity of energy storage heap or battery is non-for the use duration of charging pile
It is often important, although battery manufacturers are provided with the corresponding relationship between the open-circuit voltage of battery and battery capacity and can refer to, due to
Charging pile uses uncertain, corresponding self-discharge of battery it is uncertain, the internal resistance of cell with aging, charge and discharge number, temperature, put
The reasons such as electric depth change, and inform user's energy storing structure under the premise of guaranteeing safe-discharge depth, remaining capacity can expire
There are problems for the maximum usage quantity of foot offer charging pile；For form energy storage heap each battery carry out battery management its at
Originally be it is relatively high, in energy storage heap the topology connection structure of battery and internal resistance variation etc. due to, the computation model of foundation is non-
It is often complicated, and it is identical integrally to carry out with energy storage heap battery management, there is also the problem that deviation is larger, as battery of mobile phone monitors,
Although mobile phone shows electricity also surplus 20%, perceiving in actual use to be 5%；This use for charging pile energy storage
It is then affected for the usage experience of family, it is also possible to because the over-discharge of energy storage heap impacts energy storage pile structure；Using
Newest impedance tracking gas gauges calculation can obtain the data such as the more accurate internal resistance of cell, due to being filled using charging pile
The remaining capacity that required parameter calculates its energy storing structure can be just obtained in electric process, for not yet using the user of charging pile then difficult
To know that charging pile corresponds to the capacity of energy storing structure in advance, and multiple charging piles are deposited simultaneously using then will affect unit electricity consumption
Charging pile element is unable to satisfy charge requirement after wasting time to wait, and brings puzzlement for normal use.In order to solve this
Problem, it is necessary to be furtherd investigate.
Summary of the invention
For the deficiency in the presence of the prior art, the present invention provides a kind of monitoring device for energy storage heap, mesh
Be optimize charging pile energy storing structure use management, increase the charging pile usage quantity of full-amount unit electricity.
To achieve the above object, present invention employs the following technical solutions：
A kind of monitoring device for energy storage heap connects comprising the first wiring group, the second wiring group, third wiring group, the 4th
Line group, the first electric-controlled switch triggering terminals, the second electric-controlled switch triggering terminals, controlling of sampling unit and switching molding group；Its
In the first wiring group, the second wiring group, third wiring group, the 4th wiring group include positive terminal, negative terminals；It is described
Controlling of sampling unit include first voltage measuring unit, second voltage measuring unit, sample resistance module, sampling switching switch,
Bus communication module and control unit；First voltage measuring unit is connected in parallel with the first wiring group, third wiring group；Second electricity
Pressure measuring unit is connected in parallel with the second wiring group, the 4th wiring group；The first voltage measuring unit, second voltage measurement are single
The output of member is connected with the input of control unit；The positive terminal of first wiring group is through over sampling switching switch, sample resistance
Module is connected with the positive terminal of the second wiring group；The triggering end or communication ends of sampling switching switch are connected with control unit；
The input of linear amplifier circuit is connected with sample resistance module, to amplify the voltage signal of sample resistance module acquisition；Linearly put
The output of big circuit is connected by AD conversion unit with the input of control unit；The bus communication module and control unit are logical
Letter is connected；First electric-controlled switch triggers the output-parallel of terminals, the second electric-controlled switch triggering terminals and bus communication module
Connect.
Further, the bus communication module includes CAN communication module, RS232 communication module, RS485 communication module
In one of which.
Further, also include trigger unit, the trigger unit include switch, sensor or communication module wherein one
Kind.
It further, also include interactive device；The interactive device is connected with control unit.
Further, the sample resistance module includes sample resistance R1, the sample resistance R2 being connected in series；It is corresponding,
The linear amplifier circuit includes differential amplifier circuit, the one of input terminal and sample resistance R1 of differential amplifier circuit
Connect far from one end of sample resistance R2, another input terminal and sample resistance R2 of differential amplifier circuit are separate to be taken
One end of sample resistance R1 connects；The connecting pin of sample resistance R1 and sample resistance R2 and the reference ground phase of differential amplifier circuit
Even.
Further, described control unit is stored with the battery of the supplemental characteristic of battery and concrete model vehicle in energy storage heap
Capacity C 0 and calibration standard charging current size I0, standard charging duration T0；The supplemental characteristic includes several battery open circuit electricity
Press discrete data SOC, the safe-discharge depth residual voltage EV of corresponding battery capacity.
Further, described control unit includes following sequential step：
A, trigger signal is issued, sampling switching switch is disconnected and triggers terminals and/or the second electricity to the first electric-controlled switch
It controls switch triggering terminals and issues shutdown switch connection signal；
B, read input signal, obtain first voltage measuring unit transmitting the first wiring group open-circuit voltage Vocv1 and/or
The second wiring group voltage open circuit Vocv2 of second voltage measuring unit transmitting；
C, trigger signal is issued, so that sampling switching switch conduction；
D, input signal is read, sampled resistive module sampling is obtained, linear amplifier circuit, AD conversion unit adjustment pass
The voltage signal Vu passed；Obtain the first wiring group end voltage Vd1 and/or the second voltage measurement of the transmitting of first voltage measuring unit
Second wiring group end voltage Vd2 of unit transmitting；
E, it is put according to known to the resistance value of known sample resistance module, corresponding voltage signal Vu and linear amplifier circuit
Big coefficient calculates the electric current Iu for flowing through sample resistance module；
F, the first internal resistance rd1 and/or the second internal resistance rd2 is calculated；Wherein, the first internal resistance rd1=(Vocv1-Vd1)/Iu；The
Two internal resistance rd2=(Vocv2-Vd2)/Iu；
G, it is inquired according to the first measured wiring group open-circuit voltage Vocv1 and/or the second wiring group open-circuit voltage Vocv2
First remaining capacity Soc1 and/or the second remaining capacity Soc2；And it can according to safe-discharge depth remaining capacity EV calculating first
Use the usable electricity RM2 of electricity RM1 and/or second；Wherein, the voltage searching value of the first usable electricity is Vocv1-I0*
Rd1, and corresponding battery capacity discrete data is retrieved using this voltage value as battery open circuit voltage values, obtain the first remaining capacity
SOC1；The voltage searching value of second usable electricity is Vocv2-I0*rd2, and using this voltage value as battery open circuit voltage values
Corresponding battery capacity discrete data is retrieved, the second remaining capacity SOC 2 is obtained；
H, trigger signal is issued, the connection of sampling switching switch is disconnected；
I, according to battery capacity C0 or standard charging current size I0, the standard charging duration T0 of storage vehicle models, knot
Close the first usable electricity RM1, the second usable electricity RM2 carries out division calculation, and using the integer part of result of division as
Safe charging number is compared with charging pile quantity, can use charging pile number when safe charging number is greater than charging pile quantity
Amount is charging pile quantity, conversely, can be safe charging number with charging pile quantity；
J, safe charging number control signal is issued to switch to exterior display device and/or external smart.
The present invention is before use, need to be divided into the first energy storage mould group, the second energy storage for the specific setting of energy storage heap progress
Two energy storage units of mould group, on the one hand, under normal circumstances, by one of energy storage unit and bus and connect, realize charging pile
Dilatation and pressure stabilizing, two energy storage units are controlled by control unit and replaces and is connected in bus, different energy storage can be appropriately extended
Unit is simultaneously connected to the time in bus, advantageously reduces the Charge Management frequency of energy storage unit, reduces energy consumption；When power is off, and
The energy storage unit for connecing bus can uninterruptedly provide power output, and important another aspect helps to realize and connect the storage of bus
Energy unit with not and connect the energy storage unit of bus and realize differentiation in storing electricity, so as to by the energy storage of relatively high electricity
Unit transmits charge to the energy storage unit of opposite low battery.In the use of the present invention, by the first wiring group and the first energy storage mould group
It is connected, the second wiring group is connected with the second energy storage mould group；And the communication ends for being separately connected two intelligent relays are automatically controlled to first
Switch terminal and the second automatically controlled terminals, the switch motion end of two corresponding intelligent relays be separately connected third wiring group and
4th wiring group, and bus is connected to by the switch of intelligent relay, but also the first wiring group (the first energy storage mould group),
Two wiring groups (the second energy storage mould group) are connected on bus after intelligent relay switchs respectively, and first voltage of the invention is surveyed
Amount unit, second voltage measuring unit obtain the first wiring group (the first energy storage mould group), the second wiring group (the second energy storage mould respectively
Group) open-circuit voltage, hold voltage variation and energy storage unit between charge transfer formed electric current, thus calculate energy storage list
The internal resistance of position, according to control unit storage and generated sampling voltage when passing through sample resistance module by transmitting charge, lead to
Cross equal proportion amplification and the AD conversion unit input control unit of linear amplifier circuit；Control unit passes through sampling voltage and takes
The resistance value of sample resistive module obtains the charging current between two energy storage units, calculates energy storage unit by charging current
Internal resistance, and combine the battery capacity C0, standard charging current size I0, standard charging duration T0 of storage, battery open circuit voltage pair
The discrete data of battery capacity is answered, safe charging number is calculated in the supplemental characteristics such as safe-discharge depth remaining capacity EV, and
The maximum charge stake quantity for capableing of normal use is obtained compared with charging pile quantity, to realize optimization charging pile energy storing structure
Use management, increase the charging pile usage quantity of full-amount unit electricity.
Compared with prior art, present invention incorporates the optimizations of energy storing structure, and using energy storing structure as electric quantity monitoring
Auxiliary unit, simplify the design of electricity monitoring unit, and it is relevant that temperature, aging need not be established to the internal resistance of energy storage unit
Subject to actual measurement, and maximum charge stake quantity is calculated in complex model in turn, and charge user had both been facilitated to grasp related letter
Breath also facilitates administrative staff's rational management, management charging equipment and charge requirement client.The first designed electric-controlled switch wiring
End, the second electric-controlled switch terminals can adjust the mesh power size or specification of institute's connection switch as needed, and flexibility ratio is high.
Detailed description of the invention
Fig. 1 is the logic diagram of circuit that energy storage heap monitoring device is used in embodiment.
Fig. 2 is the logic diagram of circuit that embodiment is applied to charging pile system.
Fig. 3 is linear amplifier circuit catenation principle figure in embodiment.
Specific embodiment
The technical solution in the present invention is further illustrated with reference to the accompanying drawings and embodiments.
A kind of monitoring device for energy storage heap, as shown in Figure 1, including the first wiring group, the second wiring group, third wiring
Group, the 4th wiring group, redundancy wiring group, the first electric-controlled switch triggering terminals, the second electric-controlled switch triggering terminals, sampling control
Unit processed and switching molding group；Wherein the first wiring group, the second wiring group, third wiring group, the 4th wiring group include that anode connects
Line end, negative terminals；The controlling of sampling unit includes first voltage measuring unit, second voltage measuring unit, sampling electricity
Hinder module, sampling switching switch, bus communication module, interactive device, trigger unit and control unit；First voltage measuring unit
It is connected in parallel with the first wiring group, third wiring group；Second voltage measuring unit and the second wiring group, the 4th wiring group phase in parallel
It connects；The first voltage measuring unit, the output of second voltage measuring unit are connected with the input of control unit；First wiring group
Positive terminal be connected through over sampling switching switch, sample resistance module with the positive terminal of the second wiring group；Sampling is cut
The triggering end or communication ends for changing switch are connected with control unit；The input of linear amplifier circuit is connected with sample resistance module, with
Amplify the voltage signal that sample resistance module obtains；The output of linear amplifier circuit is by AD conversion unit and control unit
Input is connected；The bus communication module is connected with control unit communication；First electric-controlled switch triggering terminals, second automatically controlled open
Triggering terminals are closed to connect with the output-parallel of bus communication module；The Redundanter schalter wiring group includes several communication connections
End, each communication connection end is connected with the output of bus communication module；Interactive device is connected with control unit, and the interactive device is
The combination of touch screen or input keyboard and display device, wherein display device can with LED screen, LCD screen or with charging pile quantity
Identical indicator light is completed, and can be shown with the quantity of charging pile with realizing.
In the use of the present invention, the first wiring group is connected with external first energy storage mould group, the second wiring group and external the
Two energy storage mould groups are connected, and third wiring group is switched by intelligent relay to be connected with bus, and the 4th wiring group passes through intelligent relay
Device switch is connect with bus；Communication ends of the communication ends of Redundanter schalter wiring group respectively with external multiple intelligent relays connect one by one
It connects, the intelligent relay switch connected is connected between charging pile input and bus respectively as bus access switch；
Equivalent circuit when use as shown in Figure 2 (nonfunctioning components such as each wiring group are omitted), charging equipment it is defeated
Enter and is connect with mains-supplied；Bus access switch KA1-KA5 (this that connects corresponding with bus is passed through in the input of 5 charging piles respectively
Charging pile quantity is 5 in embodiment, this quantity is adjustable in actual use), the wherein anode of energy storage heap and bus+be connected,
The cathode of energy storage heap is connected with bus-；The energy storage heap is also wrapped comprising the first energy storage mould group, the second energy storage mould group, external switch
Containing the first electric-controlled switch K1, the second electric-controlled switch K2；It is each bus access switch KA1-KA5, the first electric-controlled switch K1, second automatically controlled
Switch K2 is CAN bus based intelligent breaker (being commercially available product), is on the one hand easy to implement the bus extension of switch, and
It is connected to control unit, facilitates the saving of control unit port, on the other hand convenient for controlling each intelligent breaker, communication ends are
For the triggering end or control terminal of switch；The first voltage measuring unit U1, second voltage measuring unit U2 use serial communication
Ammeter, to realize the simplification of interface and the transmitting of information；The first energy storage mould group is through the first electric-controlled switch K1 and bus
Connect；The second energy storage mould group connects through the second electric-controlled switch K2 with bus；The first voltage measuring unit U1 and first
The output end of energy storage mould group is connected in parallel；Second voltage measuring unit U2 phase in parallel with the output end of the second energy storage mould group
It connects；The output of the first voltage measuring unit U1, second voltage measuring unit U2 are connected with the input of control unit；First storage
The output end of energy mould group is connected through over sampling switching switch K3, sample resistance module with the second energy storage mould group；First electric-controlled switch
The triggering end or communication of the triggering end or control terminal of K1, the triggering end of the second electric-controlled switch K2 or control terminal, sampling switching switch
End is connected with control unit；The input of linear amplifier circuit is connected with sample resistance module, to amplify the acquisition of sample resistance module
Voltage signal；The output of linear amplifier circuit is connected by AD conversion unit with the input of control unit；The communication unit
Member is communicated to connect with control unit；Trigger unit and control unit are electrically connected；The trigger unit include switch, sensor or
The one of which of communication module.The sensor includes radar sensor, photoelectric sensor, weight sensor etc., when use
For being set to vehicle entrance or area to be charged, in order to detect, transmitting signal is opened after vehicle to be charged enters detection zone
Dynamic electric quantity monitoring and switching function, execute control sequential step；Trigger unit also can be used RF communication module or open manually
It closes, can also realize identical function.
As shown in figure 3, the sample resistance module includes sample resistance R1, the sample resistance R2 being connected in series；It is corresponding,
The linear amplifier circuit includes differential amplifier circuit, and differential amplifier circuit is built by U1, and differential amplifier circuit is wherein
One input terminal connects with sample resistance R1 far from one end of sample resistance R2, another input terminal of differential amplifier circuit with take
Sample resistance R2 connects far from one end of sample resistance R1；The connecting pin of sample resistance R1 and sample resistance R2 and differential amplifier circuit
Reference ground be connected；In Fig. 2, the first energy storage mould group is V1, and the second energy storage mould group is V2, and battery BA1, battery BA2 are linear
The output end out1 of the power supply circuit of amplifying circuit, difference channel connects with the input of AD conversion unit；When sampling switching is opened
When closing K3 closure, the electricity between the first energy storage mould group V1, the second energy storage mould group V2 is delivered in sample resistance R1, sample resistance R2
On form sampling voltage, the second energy storage mould group V2 or reverse charging are either flowed to by the first energy storage mould group V1, pass through difference
The setting for dividing amplifying circuit, realizes the two-way acquisition of the floating voltage in sample resistance module, the positive and negative values of voltage output are
It can express sense of current, the identification of the energy storage mould group of the energy storage mould group for flowing into charge and outflow charge realized, convenient for control
The subsequent processing of unit processed.The sampling switching switch includes metal-oxide-semiconductor, to control and save installation space；
Described control unit is stored with the battery capacity of the supplemental characteristic of battery and several concrete model vehicles in energy storage heap
C0 and/or standard charging current size I0, standard charging duration T0；The supplemental characteristic includes several battery open circuit voltages pair
Answer discrete data, the safe-discharge depth remaining capacity EV of battery capacity；Relevant parameter number can be realized by network communication module
According to adjustment or update, thus it is more accurate it is reasonable management charging pile or energy storage heap use；In use, control unit also needs
Store amplification coefficient, the error transfer factor coefficient of linear amplifier circuit.
Described control unit includes following sequential step：
A, trigger signal is issued, and triggers terminals and/or the second electric-controlled switch triggering terminals to the first electric-controlled switch
Shutdown switch connection signal is issued, samples switching switch, the first electric-controlled switch and/or the second electric-controlled switch to disconnect；
B, read input signal, obtain first voltage measuring unit transmitting the first wiring group open-circuit voltage Vocv1 and/or
The second wiring group voltage open circuit Vocv2 of second voltage measuring unit transmitting；
C, trigger signal is issued, so that sampling switching switch conduction；
D, input signal is read, sampled resistive module sampling is obtained, linear amplifier circuit, AD conversion unit adjustment pass
The voltage signal Vu passed；Obtain the first wiring group end voltage Vd1 and/or the second voltage measurement of the transmitting of first voltage measuring unit
Second wiring group end voltage Vd2 of unit transmitting；
E, it is put according to known to the resistance value of known sample resistance module, corresponding voltage signal Vu and linear amplifier circuit
Big coefficient calculates the electric current Iu for flowing through sample resistance module；
F, the first internal resistance rd1 and/or the second internal resistance rd2 is calculated；Wherein, the first internal resistance rd1=(Vocv1-Vd1)/Iu；The
Two internal resistance rd2=(Vocv2-Vd2)/Iu；
G, it is inquired according to the first measured wiring group open-circuit voltage Vocv1 and/or the second wiring group open-circuit voltage Vocv2
First remaining capacity Soc1 and/or the second remaining capacity Soc2；And it can according to safe-discharge depth remaining capacity EV calculating first
Use the usable electricity RM2 of electricity RM1 and/or second；Wherein, the voltage searching value of the first usable electricity is Vocv1-I0*
Rd1, and corresponding battery capacity discrete data is retrieved using this voltage value as battery open circuit voltage values, obtain the first remaining capacity
SOC1；The voltage searching value of second usable electricity is Vocv2-I0*rd2, and using this voltage value as battery open circuit voltage values
Corresponding battery capacity discrete data is retrieved, the second remaining capacity SOC 2 is obtained；
H, trigger signal is issued, the connection of sampling switching switch is disconnected；
I, according to battery capacity C0 or standard charging current size I0, the standard charging duration T0 of storage vehicle models, knot
Close the first usable electricity RM1, the second usable electricity RM2 carries out division calculation, and using the integer part of result of division as
Safe charging number is compared with charging pile quantity, can use charging pile number when safe charging number is greater than charging pile quantity
Amount is charging pile quantity, conversely, can be safe charging number with charging pile quantity；
J, safe charging number control signal is issued to bus communication module and/or interactive device.
Product and electricity for electric current and duration convert this as the prior art, and details are not described herein.It is convenient to realize
Control, ARM embeded processor or DSP digital signal processing chip can be used in control unit.
In addition, control unit can by setting time parameter or electrical parameter make it is automatically controlled to first during mains-supplied
Switch terminal, the second electric-controlled switch terminals issue switching signal, so that the first electric-controlled switch, the second electric-controlled switch alternately connect
Connect the charging effect that dilatation, pressure stabilization function and the energy storage heap itself powered to charging pile are realized at bus end.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (9)
1. a kind of monitoring device for energy storage heap, it is characterised in that：Include the first wiring group, the second wiring group, third wiring
Group, the 4th wiring group, the first electric-controlled switch triggering terminals, the second electric-controlled switch trigger terminals, controlling of sampling unit and open
Guan Mo group；Wherein the first wiring group, the second wiring group, third wiring group, the 4th wiring group include that positive terminal, cathode connect
Line end；The controlling of sampling unit includes first voltage measuring unit, second voltage measuring unit, sample resistance module, sampling
Switching switch, bus communication module and control unit；First voltage measuring unit and the first wiring group, third wiring group phase in parallel
It connects；Second voltage measuring unit is connected in parallel with the second wiring group, the 4th wiring group；The first voltage measuring unit, second
The output of voltage measurement unit is connected with the input of control unit；The positive terminal of first wiring group is opened through over sampling switching
It closes, sample resistance module is connected with the positive terminal of the second wiring group；The triggering end or communication ends of sampling switching switch and control
Unit processed is connected；The input of linear amplifier circuit is connected with sample resistance module, to amplify the voltage of sample resistance module acquisition
Signal；The output of linear amplifier circuit is connected by AD conversion unit with the input of control unit；The bus communication module
It is connected with control unit communication；First electric-controlled switch triggers terminals, the second electric-controlled switch triggering terminals and bus communication mould
The output-parallel of block connects.
2. a kind of monitoring device for energy storage heap as described in claim 1, it is characterised in that：The bus communication module packet
Containing the one of which in CAN communication module, RS232 communication module, RS485 communication module.
3. such as a kind of described in any item monitoring devices for energy storage heap of claims 1 or 2, it is characterised in that：Also comprising handing over
Mutual device；The interactive device is connected with control unit.
4. a kind of monitoring device for energy storage heap as described in claim 1, it is characterised in that：The sample resistance module packet
Containing sample resistance R1, the sample resistance R2 being connected in series；Corresponding, the linear amplifier circuit includes differential amplifier circuit, poor
One of input terminal of amplifying circuit is divided to connect with sample resistance R1 far from one end of sample resistance R2, differential amplifier circuit
Another input terminal connects with sample resistance R2 far from one end of sample resistance R1；The connection of sample resistance R1 and sample resistance R2
End is connected with the reference ground of differential amplifier circuit.
5. a kind of monitoring device for energy storage heap as claimed in claim 3, it is characterised in that：Described control unit is stored with
The supplemental characteristic of battery, the battery capacity C0 of charging pile quantity and concrete model vehicle and calibration standard charging current in energy storage heap
Size I0, standard charging duration T0；The supplemental characteristic includes the discrete data that several battery open circuit voltages correspond to battery capacity
SOC, safe-discharge depth residual voltage EV.
6. a kind of monitoring device for energy storage heap as claimed in claim 5, it is characterised in that：The control in unit processed includes
Following sequential step：
A, sending trigger signal disconnects sampling switching switch and opens to the first electric-controlled switch triggering terminals and/or second are automatically controlled
It closes triggering terminals and issues shutdown switch connection signal；
B, input signal is read, the first wiring group open-circuit voltage Vocv1 and/or second of first voltage measuring unit transmitting is obtained
The second wiring group voltage open circuit Vocv2 of voltage measurement unit transmitting；
C, trigger signal is issued, so that sampling switching switch conduction；
D, input signal is read, sampled resistive module sampling is obtained, linear amplifier circuit, AD conversion unit adjustment are transmitted
Voltage signal Vu；Obtain the first wiring group end voltage Vd1 and/or second voltage measuring unit of the transmitting of first voltage measuring unit
Second wiring group end voltage Vd2 of transmitting；
E, according to the known amplification system of the resistance value of known sample resistance module, corresponding voltage signal Vu and linear amplifier circuit
Number calculates the electric current Iu for flowing through sample resistance module；
F, the first internal resistance rd1 and/or the second internal resistance rd2 is calculated；Wherein, the first internal resistance rd1=(Vocv1-Vd1)/Iu；In second
Hinder rd2=(Vocv2-Vd2)/Iu；
G, according to the first measured wiring group open-circuit voltage Vocv1 and/or the second wiring group open-circuit voltage Vocv2 inquiry first
Remaining capacity Soc1 and/or the second remaining capacity Soc2；And first is calculated according to safe-discharge depth remaining capacity EV and can be used
The usable electricity RM2 of electricity RM1 and/or second；Wherein, the voltage searching value of the first usable electricity is Vocv1-I0*rd1,
And corresponding battery capacity discrete data is retrieved using this voltage value as battery open circuit voltage values, obtain the first remaining capacity
SOC1；The voltage searching value of second usable electricity is Vocv2-I0*rd2, and using this voltage value as battery open circuit voltage values
Corresponding battery capacity discrete data is retrieved, the second remaining capacity SOC 2 is obtained；
H, trigger signal is issued, the connection of sampling switching switch is disconnected；
I, according to battery capacity C0 or standard charging current size I0, the standard charging duration T0 of storage vehicle models, in conjunction with the
One usable electricity RM1, the second usable electricity RM2 carry out division calculation, and using the integer part of result of division as safety
Charging times are compared with charging pile quantity, can use charging pile quantity when safe charging number is greater than charging pile quantity
For charging pile quantity, conversely, can be safe charging number with charging pile quantity；
J, safe charging number control signal is issued to bus communication module and/or interactive device.
7. a kind of monitoring device for energy storage heap as claimed in claim 6, it is characterised in that：It also include trigger unit, touching
Bill member and control unit are electrically connected；The trigger unit includes the one of which of switch, sensor or communication module.
8. a kind of monitoring device for energy storage heap as described in claim 1, it is characterised in that：The sampling switching switch packet
Containing metal-oxide-semiconductor.
9. a kind of monitoring device for energy storage heap as described in claim 1, it is characterised in that：It also include Redundanter schalter wiring
Group；The Redundanter schalter wiring group includes several communication connection ends, and each communication connection end is connected with the output of bus communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810640545.7A CN108832206B (en) | 2018-06-21 | 2018-06-21 | Battery monitoring device for energy storage stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810640545.7A CN108832206B (en) | 2018-06-21 | 2018-06-21 | Battery monitoring device for energy storage stack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108832206A true CN108832206A (en) | 2018-11-16 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070228835A1 (en) * | 2005-07-12 | 2007-10-04 | Diran Varzhabedian | Backup power system for electrical appliances |
| US20110121654A1 (en) * | 2006-03-28 | 2011-05-26 | Recker Michael V | Remote switch sensing in lighting devices |
| CN103138316A (en) * | 2011-11-30 | 2013-06-05 | 威海中创国际贸易有限公司 | Electric car charger |
| CN103151820A (en) * | 2013-03-26 | 2013-06-12 | 上海大学 | Mobile energy storage battery electric vehicle charging system |
| CN103825351A (en) * | 2014-02-24 | 2014-05-28 | 广西电网公司电力科学研究院 | Intelligent energy storage type emergency power supply system |
| CN105356528A (en) * | 2015-10-19 | 2016-02-24 | 国网河南省电力公司电力科学研究院 | Battery management system |
-
2018
- 2018-06-21 CN CN201810640545.7A patent/CN108832206B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070228835A1 (en) * | 2005-07-12 | 2007-10-04 | Diran Varzhabedian | Backup power system for electrical appliances |
| US20110121654A1 (en) * | 2006-03-28 | 2011-05-26 | Recker Michael V | Remote switch sensing in lighting devices |
| CN103138316A (en) * | 2011-11-30 | 2013-06-05 | 威海中创国际贸易有限公司 | Electric car charger |
| CN103151820A (en) * | 2013-03-26 | 2013-06-12 | 上海大学 | Mobile energy storage battery electric vehicle charging system |
| CN103825351A (en) * | 2014-02-24 | 2014-05-28 | 广西电网公司电力科学研究院 | Intelligent energy storage type emergency power supply system |
| CN105356528A (en) * | 2015-10-19 | 2016-02-24 | 国网河南省电力公司电力科学研究院 | Battery management system |
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