CN206258562U - Intelligent monitoring system for storage battery - Google Patents
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 37
- 239000000178 monomer Substances 0.000 claims abstract description 54
- 238000004891 communication Methods 0.000 claims abstract description 44
- 238000012806 monitoring device Methods 0.000 claims abstract description 37
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 230000005284 excitation Effects 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 5
- 210000004027 cell Anatomy 0.000 description 13
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- 230000010287 polarization Effects 0.000 description 6
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- 239000003990 capacitor Substances 0.000 description 2
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- 210000000352 storage cell Anatomy 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
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Abstract
The utility model provides a battery intelligent monitoring system, it cooperatees by the storage battery that a plurality of establish ties and/or parallelly connected battery monomer formed with a plurality of, and communicates the back each other between two liang of adjacent storage battery and form to a voltage source of awaiting measuring. The system comprises a plurality of storage battery monitoring devices, a controller and a centralized communication device; each storage battery monitoring device comprises a detection control unit and a communication unit which are arranged on the same circuit board and are sequentially connected, the detection control unit is also connected with each storage battery monomer through a multi-core wire, and the communication unit is also connected with a controller and a centralized communication device in a wireless mode; the controller is also connected with the voltage source to be tested and the centralized communication device; the centralized communication device is also connected to the data receiving equipment. Implement the utility model discloses, can overcome the inconvenience that prior art brought, realize every battery performance of storage battery and the uniformity and the real-time on the state parameter time, acquire more accurate battery state parameter.
Description
Technical Field
The utility model relates to a battery technical field especially relates to a battery intelligent monitoring system.
Background
With the development of the technology, the acquisition of the state information of the storage battery in the engineering application field is more and more refined and strict, and the existing requirements cannot be met only by depending on the voltage value of the storage battery, the working current and the residual electric quantity of the battery simply estimated through the voltage, so that the accurate study and judgment of the life cycle of the storage battery, the fault state and the like becomes very important. The state of the storage battery is mostly expressed by parameters such as terminal voltage, internal resistance, remaining charge amount soc (state of charge), state of health soh (state of health), and working temperature of the storage battery. If the key data can not be mastered well in real time, and an abnormal storage battery can not be discovered and processed in time, serious potential safety hazard can exist, even serious safety production accidents can be caused, and property loss can be caused.
At present, the storage battery state test mainly comprises the following two modes: 1) the portable battery detection instrument is adopted to manually test the storage battery (group), but because the number of a group of storage batteries is more, particularly hundreds of storage batteries, a large amount of manpower and material resources are consumed, the efficiency is low, the cost is high, and the data timeliness is poor; 2) the storage battery monitoring equipment is adopted to carry out on-line monitoring on the storage battery (group), although field data processing and display can be carried out, the storage battery monitoring equipment can also be transmitted to a remote monitoring platform for processing and analysis, but because the storage battery monitoring equipment has more test ports, a large number of circuits (such as test circuits, power supply circuits and communication circuits) need to be laid during installation, the construction environment is complex, the maintenance workload is large, and the cost is high; meanwhile, because long-distance testing is easily interfered, internal resistance testing by a multi-frequency point excitation method is often inaccurate, and aging short circuit hidden danger also exists.
Therefore, a need exists for an intelligent storage battery monitoring system, which can overcome the inconvenience caused by manual detection and online monitoring of storage batteries in the prior art, realize the consistency and real-time performance of each battery performance and state parameter of a storage battery pack on time, and acquire more accurate storage battery state parameters.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a technical problem that will solve provides a battery intelligent monitoring system, can overcome the inconvenience that battery manual work detected and on-line monitoring brought among the prior art, realizes the uniformity and the real-time nature of every battery performance of storage battery and state parameter time, acquires more accurate battery state parameter.
In order to solve the technical problem, an embodiment of the present invention provides an intelligent storage battery monitoring system, which is matched with a plurality of storage battery packs formed by a plurality of storage battery cells connected in series and/or in parallel, wherein two adjacent storage battery packs are communicated with each other to form a voltage source to be measured; wherein,
the intelligent storage battery monitoring system comprises a plurality of storage battery monitoring devices for acquiring and calculating the performance parameters of each storage battery monomer in a corresponding storage battery pack in real time, a controller for detecting the total voltage, the total current and the voltage ripple coefficient formed by the voltage source to be detected in real time, and a centralized communication device for acquiring the calculated performance parameters of each storage battery monomer in each storage battery pack and the detected total voltage, total current and voltage ripple coefficient formed by the voltage source to be detected in a wireless mode and transmitting the parameters to data receiving equipment; wherein,
each storage battery monitoring device comprises a detection control unit and a communication unit, wherein the detection control unit is arranged on the same circuit board and is sequentially connected with the communication unit and used for acquiring and calculating the performance parameters of each storage battery monomer in the same storage battery pack in real time; the detection control unit in each storage battery monitoring device is also connected with each storage battery monomer in the corresponding storage battery pack through a multi-core wire, and the communication unit in each storage battery monitoring device is also connected with the first end of the controller and the input end of the centralized communication device in a wireless mode; each multi-core wire comprises a plurality of pairs of connecting wires, and each pair of connecting wires comprises a positive voltage wire and a positive current wire which are connected with the positive pole column of the same single storage battery, and a negative voltage wire and a negative current wire which are connected with the negative pole column of the same single storage battery;
the second end of the controller is connected with the positive output end of the voltage source to be detected, the third end of the controller is connected with the negative output end of the voltage source to be detected, the fourth end of the controller is connected with the positive output end or the negative output end of the voltage source to be detected through a current transformer, and the fifth end of the controller is connected with the input end of the centralized communication device in a wireless mode;
the output end of the centralized communication device is connected with the data receiving equipment.
The detection control unit in each storage battery monitoring device comprises a main control module for data control processing and analysis, a discharge module for enabling each storage battery monomer in the same storage battery pack to generate two current excitation signals with different frequencies when a discharge signal is loaded, an acquisition module for acquiring the two current excitation signals of each storage battery monomer in the same storage battery pack and acquiring two response voltage signals formed by each storage battery monomer in the same storage battery pack and having the same frequency with the two corresponding current excitation signals, and a data operation module for calculating the performance parameters of each storage battery monomer in the same storage battery pack through the two current excitation signals and the two response voltage signals of each storage battery monomer in the same storage battery pack; wherein,
the main control module is connected with the discharge module, the acquisition module and the data operation module and is also connected with a communication unit in the same storage battery monitoring device; the main control module is formed by an ARM chip and a peripheral circuit thereof;
the discharging modules are also connected in series on a positive current line and a negative current line which are connected with each storage battery monomer in the same storage battery pack; the discharging module is formed by a DSP chip and a peripheral circuit thereof;
the acquisition modules are also connected in series on a positive current line and a negative current line which are connected with each storage battery monomer in the same storage battery pack, and are also connected in series on a positive voltage line and a negative voltage line which are connected with each storage battery monomer in the same storage battery pack; the acquisition module is formed by a high-speed acquisition AD digital-to-analog converter chip and a peripheral circuit thereof;
the data operation module is formed by another DSP chip and peripheral circuits thereof.
The collecting module in the detection control unit in each storage battery monitoring device further comprises a plurality of Hall sensors which are respectively connected with each storage battery monomer in the same storage battery pack and used for collecting the temperature of the storage battery monomers.
And the detection control unit of each storage battery monitoring device is connected with the corresponding multi-core wire in a male-female head matching mode.
The output end of the centralized communication device is connected with the data receiving equipment through GPRS, and the input end of the centralized communication device is connected with the communication unit of each storage battery monitoring device and the fifth end of the controller through WIFI.
The performance parameters of each storage battery monomer comprise terminal voltage, working current, residual charge and health state of each storage battery body.
Implement the embodiment of the utility model provides a, following beneficial effect has:
in the embodiment of the utility model, because the battery intelligent monitoring system can acquire and calculate each battery monomer performance parameter in each storage battery through a plurality of battery monitoring devices in real time automatically, and each battery monomer performance parameter in each storage battery can be unified and transmitted to the data receiving equipment through the centralized communication device, the time waiting and the non-uniformity of the complicated wiring of traditional storage battery on-line detection and polling one by one are avoided, thereby greatly improving the real-time performance of each section of battery state information, therefore, the inconvenience brought by manual detection and on-line monitoring of the storage battery in the prior art is overcome, the consistency and the real-time performance of each section of battery performance and state parameter time of the storage battery are realized, and more accurate battery state parameters are acquired; meanwhile, the controller can detect the output voltage and the corresponding ripple coefficient thereof in real time according to the voltage source to be detected formed by all the storage battery packs, so as to prevent the charging voltage exceeding the specified ripple index from damaging the storage battery monomer in the storage battery packs.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.
Fig. 1 is a schematic diagram of a system structure of an intelligent storage battery monitoring system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a system architecture of the detection control unit in FIG. 1;
FIG. 3 is a schematic circuit connection diagram of the data calculation module in FIG. 2 using a Thevenin circuit model of a storage battery;
FIG. 4 is another system structure schematic diagram of intelligent monitoring system for storage battery provided by the embodiment of the utility model'
FIG. 5 is a schematic diagram of a system configuration of the detection control unit in FIG. 4;
fig. 6 is a schematic side view of an intelligent storage battery monitoring device in the intelligent storage battery monitoring system according to the embodiment of the present invention;
fig. 7 is the embodiment of the utility model provides an in the battery intelligent monitoring system with the planar structure schematic diagram of the multicore line that a battery intelligent monitoring device links to each other.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, in order to provide an embodiment of the present invention, an intelligent battery monitoring system is provided, which is matched with a plurality of battery packs formed by a plurality of battery cells connected in series and/or in parallel, and two adjacent battery packs are connected to each other to form a voltage source U to be measured; wherein,
the intelligent storage battery monitoring system comprises a plurality of storage battery monitoring devices S for acquiring and calculating the performance parameters of each storage battery monomer in a corresponding storage battery pack in real time, a controller M for detecting the total voltage, the total current and the voltage ripple coefficient formed by a voltage source U to be detected in real time, and a centralized communication device C for acquiring the calculated performance parameters of each storage battery monomer in each storage battery pack and the detected total voltage, total current and voltage ripple coefficient formed by the voltage source U to be detected in a wireless mode and transmitting the parameters to a data receiving device R; wherein,
each storage battery monitoring device S comprises a detection control unit 1 and a communication unit 2, wherein the detection control unit 1 is arranged on the same circuit board and is sequentially connected with the communication unit 2 and used for acquiring and calculating the performance parameters of each storage battery monomer in the same storage battery pack in real time; the detection control unit 1 in each storage battery monitoring device S is also connected with each storage battery monomer in the corresponding storage battery pack through a multi-core wire K, and the communication unit 2 in each storage battery monitoring device S is also connected with the first end a1 of the controller M and the input end of the centralized communication device C in a wireless mode; each multi-core wire K comprises a plurality of pairs of connecting wires, and each pair of connecting wires comprises a positive voltage wire and a positive current wire which are connected with the positive post of the same storage battery monomer, and a negative voltage wire and a negative current wire which are connected with the negative post of the same storage battery monomer;
the second end a2 of the controller M is connected with the positive output end of the voltage source U to be tested, the third end a3 is connected with the negative output end of the voltage source U to be tested, the fourth end a4 is connected with the positive output end or the negative output end of the voltage source U to be tested through the current transformer L, and the fifth end a5 is connected with the input end of the centralized communication device C in a wireless mode;
the output of the centralized communication means C is connected to the data reception device R.
It should be noted that the detection control unit 1 in each storage battery monitoring device S may be implemented by using a single chip microcomputer having a plurality of digital chips, the communication unit 2 may be implemented by using a single digital chip, and the performance parameters of each storage battery cell acquired by the detection control unit 1 include the terminal voltage, the operating current, the remaining charge amount, and the state of health of each storage battery body.
It can be understood that the output end of the centralized communication device C is connected with the data receiving device R through GPRS, the input end is connected with the communication unit 2 of each storage battery monitoring device S and the fifth end a5 of the controller M through WIFI, so that the waiting and the non-uniformity of the traditional storage battery pack on-line detection complicated wiring and one-by-one inspection are avoided, the real-time performance of the state information of each storage battery is greatly improved, a large number of circuits (such as test circuits, power circuits and communication circuits) need to be laid during installation, the construction complexity is reduced, and the maintenance workload and the cost are reduced.
Furthermore, as shown in fig. 2, the detection control unit 1 in each storage battery monitoring device S includes a main control module 11 for controlling, processing and analyzing data, a discharging module 12 for generating two current excitation signals with different frequencies for each storage battery cell in the same storage battery pack when a discharging signal is loaded, an acquiring module 13 for acquiring two current excitation signals of each storage battery cell in the same storage battery pack and acquiring two response voltage signals formed by each storage battery cell in the same storage battery pack and having the same frequency as the two corresponding current excitation signals, and a data operation module 14 for calculating performance parameters of each storage battery cell in the same storage battery pack by using the two current excitation signals and the two response voltage signals of each storage battery cell in the same storage battery pack; wherein,
the main control module 11 is connected with the discharge module 12, the acquisition module 13 and the data operation module 14, and is also connected with the communication unit 2 in the same storage battery monitoring device S; the main control module 11 is formed by an ARM chip and a peripheral circuit thereof;
the discharging modules 12 are also connected in series to the positive current line (X11-Xn 1 in fig. 2) and the negative current line (X12-Xn 2 in fig. 2) of each battery cell connected in the same battery pack; the discharging module 12 is formed by a DSP chip and its peripheral circuits;
the collection modules 13 are also connected in series to positive current lines (e.g., X11 to Xn1 in fig. 2) and negative current lines (e.g., X12 to Xn2 in fig. 2) connecting the storage cells in the same storage battery pack, and are also connected in series to positive voltage lines (e.g., X13 to Xn3 in fig. 2) and negative voltage lines (e.g., X14 to Xn4 in fig. 2) connecting the storage cells in the same storage battery pack; the acquisition module 13 is formed by a high-speed acquisition AD digital-to-analog converter chip and a peripheral circuit thereof;
the data operation block 14 is formed of another DSP chip and its peripheral circuits.
It should be noted that the performance parameters of each battery cell calculated in the data operation module 14 include remaining charge and a state of health, and the remaining charge and the state of health are optimally estimated by using a Kalman filter algorithm according to the values of the ohmic resistor R1, the polarization resistor R2, and the double-layer polarization capacitor C2 of the Thevenin circuit model (as shown in fig. 3), and the values of the ohmic resistor R1, the polarization resistor R2, and the double-layer polarization capacitor C2 of the Thevenin circuit model in fig. 3 are calculated based on the two current excitation signals and the two response voltage signals in the acquisition module 13.
Furthermore, as shown in fig. 4 and 5, in order to obtain the real-time temperature of each battery cell in each battery pack, the acquisition module 13 in the detection and control unit 1 in each battery monitoring device S further includes a plurality of hall sensors T respectively connected to each battery cell in the same battery pack and used for acquiring the temperature of the battery cell.
Furthermore, the detection control unit 1 of each storage battery monitoring device S is connected with the corresponding multi-core wire K in a male-female head matching manner. As shown in fig. 6, which is a schematic side view of an intelligent monitoring device for a storage battery in an intelligent storage battery monitoring system according to an embodiment of the present invention, in the figure, D1 is a female connector, and J1-J4 is an interface of a hall sensor T; as shown in fig. 7, for the embodiment of the present invention, a schematic plane structure diagram of a multi-core wire connected to an intelligent storage battery monitoring device in an intelligent storage battery monitoring system is shown, in which D2 is a male connector.
The embodiment of the utility model provides an in the working principle of battery intelligent monitoring system do: in the process that each storage battery intelligent monitoring device S detects a corresponding storage battery pack, the main control module 11 of the detection control unit 1 controls the discharge module 12 to generate a discharge signal, when the discharge signal is loaded, each storage battery monomer in the corresponding storage battery pack discharges to the discharge module 12 through a positive current line and a negative current line by using two current excitation signals with different frequencies, at the moment, the acquisition module 13 acquires two current excitation signals flowing through each storage battery monomer in the same storage battery pack and acquires two response voltage signals formed by each storage battery monomer in the same storage battery pack under the same frequency respectively corresponding to the two current excitation signals through a positive voltage line and a negative voltage line, the data operation module 14 acquires the two current excitation signals and the two response voltage signals of each storage battery monomer in the same storage battery pack according to the received two current excitation signals and two response voltage signals of each storage battery monomer, ohmic resistance, polarization resistance and double-layer polarization capacitance of each storage battery monomer in the same storage battery pack are obtained through an algorithm, and the residual charge capacity and the health state of each storage battery monomer are optimally estimated through a Kalman filter algorithm. Meanwhile, the obtained ID information and temperature of each storage battery monomer, the estimated remaining charge capacity and health state of the storage battery and other information are sent to the centralized communication device C from the communication unit 2 in a WIFI mode to be received, and then are forwarded to the remote data receiving equipment R through GPRS.
In order to prevent the charging voltage exceeding the specified ripple index from damaging the storage battery monomer in the storage battery pack, the controller M can simultaneously perform real-time detection according to the voltage source U to be detected formed by all the storage battery packs, and analyze the output voltage of the voltage source U to be detected, the corresponding ripple coefficient and the output current.
Implement the embodiment of the utility model provides a, following beneficial effect has:
in the embodiment of the utility model, because the battery intelligent monitoring system can acquire and calculate each battery monomer performance parameter in each storage battery through a plurality of battery monitoring devices in real time automatically, and each battery monomer performance parameter in each storage battery can be unified and transmitted to the data receiving equipment through the centralized communication device, the time waiting and the non-uniformity of the complicated wiring of traditional storage battery on-line detection and polling one by one are avoided, thereby greatly improving the real-time performance of each section of battery state information, therefore, the inconvenience brought by manual detection and on-line monitoring of the storage battery in the prior art is overcome, the consistency and the real-time performance of each section of battery performance and state parameter time of the storage battery are realized, and more accurate battery state parameters are acquired; meanwhile, the controller can detect the output voltage and the corresponding ripple coefficient thereof in real time according to the voltage source to be detected formed by all the storage battery packs, so as to prevent the charging voltage exceeding the specified ripple index from damaging the storage battery monomer in the storage battery packs.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (6)
1. The intelligent storage battery monitoring system is characterized in that the intelligent storage battery monitoring system is matched with a plurality of storage battery packs formed by a plurality of storage battery monomers connected in series and/or in parallel, and every two adjacent storage battery packs are communicated with each other to form a voltage source to be detected; wherein,
the intelligent storage battery monitoring system comprises a plurality of storage battery monitoring devices (S) for acquiring and calculating the performance parameters of each storage battery monomer in a corresponding storage battery pack in real time, a controller (M) for detecting the total voltage, the total current and the voltage ripple coefficient formed by the voltage source to be detected in real time, and a centralized communication device (C) for acquiring the calculated performance parameters of each storage battery monomer in each storage battery pack and the detected total voltage, total current and voltage ripple coefficient formed by the voltage source to be detected in a wireless mode and transmitting the parameters to data receiving equipment; wherein,
each storage battery monitoring device (S) comprises a detection control unit (1) and a communication unit (2), wherein the detection control unit (1) is arranged on the same circuit board and is sequentially connected with the communication unit for acquiring and calculating the performance parameters of each storage battery monomer in the same storage battery pack in real time and outputting the performance parameters of each storage battery monomer in the same storage battery pack; the detection control unit (1) in each storage battery monitoring device (S) is also connected with each storage battery monomer in the corresponding storage battery pack through a multi-core wire (K), and the communication unit (2) in each storage battery monitoring device (S) is also connected with the first end of the controller (M) and the input end of the centralized communication device (C) in a wireless mode; each multi-core wire (K) comprises a plurality of pairs of connecting wires, and each pair of connecting wires comprises a positive voltage wire and a positive current wire which are connected with the positive pole column of the same storage battery monomer, and a negative voltage wire and a negative current wire which are connected with the negative pole column of the same storage battery monomer;
the second end of the controller (M) is connected with the positive output end of the voltage source to be detected, the third end of the controller (M) is connected with the negative output end of the voltage source to be detected, the fourth end of the controller (M) is connected with the positive output end or the negative output end of the voltage source to be detected through a current transformer (L), and the fifth end of the controller (M) is connected with the input end of the centralized communication device (C) in a wireless mode;
the output end of the centralized communication device (C) is connected with the data receiving equipment.
2. The intelligent monitoring system for storage batteries according to claim 1, the detection control unit (1) in each storage battery monitoring device (S) comprises a main control module (11) for controlling, processing and analyzing data, a discharge module (12) for enabling each storage battery monomer in the same storage battery pack to generate two current excitation signals with different frequencies when a discharge signal is loaded, an acquisition module (13) for acquiring two current excitation signals of each storage battery monomer in the same storage battery pack and acquiring two response voltage signals formed by each storage battery monomer in the same storage battery pack and having the same frequency with the two corresponding current excitation signals, and a data operation module (14) for calculating the performance parameters of each storage battery monomer in the same storage battery pack through the two current excitation signals and the two response voltage signals of each storage battery monomer in the same storage battery pack; wherein,
the main control module (11) is connected with the discharge module (12), the acquisition module (13) and the data operation module (14), and is also connected with a communication unit (2) in the same storage battery monitoring device (S); the main control module (11) is formed by an ARM chip and a peripheral circuit thereof;
the discharging modules (12) are also connected in series on a positive current line and a negative current line which are connected with each storage battery monomer in the same storage battery pack; wherein, the discharge module (12) is formed by a DSP chip and a peripheral circuit thereof;
the acquisition modules (13) are also connected in series on a positive current line and a negative current line which are connected with each storage battery monomer in the same storage battery pack, and are also connected in series on a positive voltage line and a negative voltage line which are connected with each storage battery monomer in the same storage battery pack; the acquisition module (13) is formed by a high-speed acquisition AD digital-to-analog converter chip and a peripheral circuit thereof;
the data operation module (14) is formed by another DSP chip and peripheral circuits thereof.
3. The intelligent storage battery monitoring system according to claim 2, wherein the collection module (13) in the monitoring and control unit (1) in each storage battery monitoring device (S) further comprises a plurality of hall sensors (T) which are respectively connected to the storage battery cells in the same storage battery pack and used for collecting the temperatures of the storage battery cells.
4. The intelligent storage battery monitoring system according to claim 3, wherein the detection control unit (1) of each storage battery monitoring device (S) and the corresponding multi-core wire (K) are connected in a male-female head matching manner.
5. The intelligent battery monitoring system according to claim 4, characterized in that the output of the centralized communication device (C) is connected to the data receiving equipment through GPRS, and the input is connected to the communication unit (2) of each battery monitoring device (S) and the fifth terminal of the controller (M) through WIFI.
6. The intelligent monitoring system for storage batteries according to claim 5, wherein the performance parameters of each storage battery cell comprise terminal voltage, working current, residual charge and state of health of each storage battery body.
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