CN114624605A - Checking device, method and system for storage battery monitoring equipment - Google Patents
Checking device, method and system for storage battery monitoring equipment Download PDFInfo
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- CN114624605A CN114624605A CN202210180355.8A CN202210180355A CN114624605A CN 114624605 A CN114624605 A CN 114624605A CN 202210180355 A CN202210180355 A CN 202210180355A CN 114624605 A CN114624605 A CN 114624605A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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Abstract
The application discloses calibration equipment, method and system of storage battery monitoring equipment, and the equipment comprises: the device comprises a storage battery monitoring device to be checked, a super capacitor, a control unit, a balancing unit and a standard resistance unit, wherein the storage battery monitoring device to be checked is connected with the super capacitor, the balancing unit and the standard resistance unit are respectively connected with the super capacitor and used for measuring voltage precision and internal resistance precision of the storage battery monitoring device to be checked, the control unit is connected with the storage battery monitoring device to be checked, the super capacitor, the balancing unit and the standard resistance unit, and the standard resistance unit is connected with two ends of the super capacitor. The invention can verify the storage battery monitoring equipment, reduce the fault rate of the direct-current power supply system and can be widely applied to the technical field of monitoring and verifying the storage battery of the direct-current system.
Description
Technical Field
The application relates to the technical field of power detection, in particular to a checking device, a checking method and a checking system for storage battery monitoring equipment.
Background
Storage batteries are often used as backup power sources and energy storage power sources in power systems. In order to monitor the operating state of the storage battery, storage battery monitoring equipment is generally mounted on the storage battery pack for monitoring the internal resistance of the storage battery and the voltage of the single body. Therefore, the battery test equipment needs to be verified. However, in the links of research, factory debugging, field inspection and the like, no special equipment for checking the storage battery monitoring equipment exists in the related technology, so that the internal resistance and the voltage measurement precision of the storage battery monitoring equipment are difficult to check in the production and operation process. When the storage battery monitoring equipment runs for a long time under the condition of not being verified, the measurement precision may change, and the accuracy of the monitoring result is reduced.
Therefore, the above technical problems of the related art need to be solved.
Disclosure of Invention
The present application is directed to solving one of the technical problems in the related art. Therefore, the embodiment of the application provides a checking device, a method and a system for storage battery monitoring equipment, which can check storage battery detection equipment and improve the accuracy of the storage battery monitoring equipment.
According to an aspect of the embodiments of the present application, a calibration apparatus for a battery monitoring device is provided, the apparatus including: treat check-up battery monitoring facilities, super capacitor, the control unit, balanced unit and standard resistance unit, treat check-up battery monitoring facilities with super capacitor connects, balanced unit, standard resistance unit respectively with super capacitor connects, is used for treat check-up battery monitoring facilities measuring voltage precision and internal resistance precision, the control unit with treat check-up battery monitoring facilities, super capacitor, balanced unit, standard resistance unit connect, be used for control treat check-up battery monitoring facilities, super capacitor, balanced unit and standard resistance unit operation.
In one embodiment, the device further comprises a voltage equalizing circuit, wherein the voltage equalizing circuit is connected with the super capacitor in parallel and used for keeping the terminal voltage of the super capacitor consistent in the charging process.
In one embodiment, the super capacitors and equivalent resistors are connected in series to form a super capacitor bank for simulating a series storage battery pack, wherein the number of the super capacitors is the same as that of the equivalent resistors.
In one embodiment, one end of the super capacitor is connected with the standard resistor, the other end of the super capacitor is provided with a connecting terminal, one end of the standard resistor is connected with the super capacitor, and the other end of the standard resistor is provided with a connecting terminal.
In one embodiment, the control unit includes a charging unit and a discharging unit, the charging unit is connected to one end of the super capacitor and is configured to charge the super capacitor at a preset voltage, and the discharging unit is connected to the other end of the super capacitor and is configured to discharge the super capacitor at the preset voltage.
According to an aspect of the embodiments of the present application, a method for checking a storage battery monitoring device is provided, which is applied to the checking apparatus for a storage battery monitoring device in the foregoing embodiments, and the method includes:
according to the verification requirement, the terminal voltage of the super capacitor is adjusted to be the float charging voltage value of the storage battery monitoring equipment to be verified through the control unit;
acquiring a first voltage and a second voltage at two ends of the super capacitor;
and calculating a voltage measurement error result according to the first voltage and the second voltage.
In one embodiment, the method further comprises:
acquiring a first internal resistance and a second internal resistance of the super capacitor;
and determining the internal resistance error of the storage battery monitoring equipment to be verified according to the first internal resistance, the second internal resistance and the standard resistance.
In one embodiment, the obtaining the first internal resistance and the second internal resistance of the super capacitor includes:
after the terminal voltage of the super capacitor is the float charging voltage value of the storage battery monitoring equipment to be verified, acquiring a first internal resistance of the super capacitor;
and acquiring a second internal resistance of the super capacitor after the terminal voltage of the super capacitor is the float charging voltage value of the storage battery monitoring equipment to be verified.
In one embodiment, the determining, according to the first internal resistance, the second internal resistance and a standard resistance, an internal resistance error of the storage battery monitoring device to be verified includes:
calculating an absolute value of a difference value between the first internal resistance and the second internal resistance;
and if the error between the absolute value and the standard resistor is higher than a preset precision index, judging that the storage battery monitoring equipment to be verified is unqualified.
In one embodiment, the system comprises the verification device of the storage battery monitoring equipment in the previous embodiment.
The embodiment of the application provides a calibration equipment of battery monitoring facilities's beneficial effect does: the invention can verify the storage battery monitoring equipment, ensures that the direct-current power supply system runs safely, reduces the fault rate of the direct-current power supply system, and can be widely applied to the technical field of monitoring and verifying the storage battery of the direct-current system.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a calibration apparatus of a battery monitoring device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a checking device of a storage battery monitoring apparatus according to an embodiment of the present disclosure;
fig. 3 is a flowchart of a verification method for a storage battery monitoring device according to an embodiment of the present disclosure;
fig. 4 is an electrical structure connection diagram of a battery monitoring device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of the present application and in the drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Storage batteries are often used as backup power sources and energy storage power sources in power systems. In order to monitor the operating state of the storage battery, a storage battery monitoring device is generally mounted on the storage battery pack and used for monitoring the internal resistance and the cell voltage of the storage battery. Therefore, the battery test equipment needs to be verified. However, in the links of research, factory debugging, field inspection and the like, no special equipment for checking the storage battery monitoring equipment exists in the related technology, so that the internal resistance and the voltage measurement precision of the storage battery monitoring equipment are difficult to check in the production and operation process. When the storage battery monitoring equipment runs for a long time under the condition of not being verified, the measurement precision may change, and the accuracy of the monitoring result is reduced.
In order to solve the problem, the application provides a calibration device of storage battery monitoring equipment. The specific principle is shown in figure 1: the storage battery on-line monitoring device mainly comprises a storage battery monitoring module, grouping discharge, control and the like. The storage battery monitoring modules measure the voltage and the internal resistance of a certain number of batteries, and the grouping discharge and control are respectively used for discharging the battery groups monitored by each storage battery monitoring module. In the discharging process, the storage battery monitoring module corresponding to the discharged storage battery group calculates the internal resistance of the storage battery by measuring the terminal voltage, the current and the change of the storage battery terminal voltage and the current. Therefore, the internal resistance of the storage battery can be measured by adopting a discharge method under the two conditions of a static state and a floating charge state. And standing for a certain time after the charging and discharging of the storage battery are finished, measuring the open-circuit voltage U1 of the storage battery, performing constant current discharge through I2, and measuring the terminal voltage U2 of the storage battery under the constant current discharge, thus calculating the internal resistance r of the storage battery. The on-line accumulator monitor measures the internal resistance of accumulator in floating state, and the floating charge current and voltage of accumulator are I1 and U1, respectively. By measuring the battery terminal voltage U2 under constant current (I2) discharge and stopping the constant current discharge, the battery terminal voltage U3 can calculate the internal resistance r of the battery. According to the principle of measuring the internal resistance by a discharge method, the storage battery is equivalent to a voltage source with the internal resistance r, and the charged super capacitor can also be equivalent to a voltage source with the internal resistance r, so that the super capacitor can be used for equivalent batteries. The invention adopts the equivalent single battery of the super capacitor, provides internal resistance and standard resistance calibration means for the storage battery on-line monitoring device, and can be widely applied to the places of storage battery on-line monitoring research, product delivery calibration, field calibration and the like.
As shown in fig. 2, the verification apparatus for a battery monitoring device provided by the present application includes: the device comprises a storage battery monitoring device to be verified, a super capacitor, a control unit, a balancing unit and a standard resistance unit, wherein the storage battery monitoring device to be verified is connected with the super capacitor, the balancing unit and the standard resistance unit are respectively connected with the super capacitor and used for measuring voltage precision and internal resistance precision of the storage battery monitoring device to be verified, the control unit is connected with the storage battery monitoring device to be verified, the super capacitor, the balancing unit and the standard resistance unit and used for controlling the storage battery monitoring device to be verified, the super capacitor, the balancing unit and the standard resistance unit to operate, and the standard resistance unit is connected to two ends of the super capacitor and used for measuring the terminal voltage of each super capacitor. In a specific embodiment, the control unit may employ a microprocessor of the prior art; the super capacitor mainly plays a role in simulating a series storage battery pack; and the control unit is mainly used for controlling the charging and discharging functions of the super capacitor bank.
In this embodiment, the super capacitor is a capacitor bank composed of a plurality of single capacitors, and is used for simulating the internal structure of the storage battery pack.
Exemplarily, taking a storage battery online monitoring device for checking a first direct current power supply system as an example, a single super capacitor group is charged to a floating charge voltage value of a monitored storage battery through a charge-discharge control unit, a first voltage and a second voltage of the single super capacitor group are obtained by using a storage battery monitoring module and a voltage measurement unit, the storage battery online monitoring device is communicated with the storage battery online monitoring and checking device, first voltage data are transmitted to a control unit of the storage battery online monitoring and checking device, the control unit can calculate a voltage measurement error of the storage battery monitoring module according to the obtained first voltage and the obtained second voltage, and a voltage measurement accuracy condition of the storage battery monitoring module is judged according to the voltage measurement error.
Optionally, the device further comprises a voltage-sharing circuit, and the voltage-sharing circuit is connected in parallel with the super capacitor and used for keeping the terminal voltage of the super capacitor consistent in the charging process. The voltage-sharing circuit unit mainly ensures that the terminal voltage of each single super capacitor group is approximately the same. The capacitors connected in series are required to be ensured to always keep voltage-sharing work on the working occasions of serially connected capacitors, if the voltage on the capacitors deviates, the circuit works abnormally, and one of the capacitors is over-high in withstand voltage and burnt out in severe cases. The leakage current of the capacitor is a characteristic of the capacitor, the leakage current of each capacitor is not a definite value due to the fact that manufacturing processes are not completely the same, the leakage current value of the capacitor also changes in the using process, a supplier only provides the range of the leakage current of the capacitor, and the leakage current value of each capacitor cannot be guaranteed to be the same. Therefore, in the case of capacitor series connection, the voltage equalizing circuit of the present embodiment is required to ensure voltage equalization of the voltage across each series capacitor.
Optionally, the super capacitors and equivalent resistors are connected in series to form a super capacitor bank for simulating a series storage battery pack, wherein the number of the super capacitors is the same as that of the equivalent resistors.
In addition, the checking device of the storage battery monitoring equipment in the embodiment of the application further comprises a man-machine interaction unit which mainly plays roles in data information display and interface operation; the USB interface module mainly plays a role in reading and writing programs and test reports; the communication interface module mainly plays a role in communication between the storage battery online monitoring and checking device and the storage battery online monitoring device and mutually interacts with test data.
It should be noted that, in the process of obtaining the first internal resistance and the second internal resistance, the storage battery monitoring module and the corresponding discharge control circuit of the storage battery on-line monitoring device are connected with the storage battery on-line monitoring and checking device, so that each channel of the storage battery monitoring module is connected with 1 super capacitor and 1 standard resistor, the storage battery on-line monitoring device acquires a first internal resistance, a storage battery monitoring module and a corresponding discharge control circuit of the storage battery on-line monitoring device are connected with the storage battery on-line monitoring and checking device, so that part of channels of the storage battery monitoring module are connected with 1 super capacitor in a measuring way, part of channels are connected with 1 super capacitor and 2 standard resistors in a measuring way, the storage battery on-line monitoring device acquires a second internal resistance, therefore, the CPU unit determines the internal resistance measurement precision condition of the storage battery on-line monitoring device according to the first internal resistance, the second internal resistance and the standard resistance.
Optionally, one end of the super capacitor is connected with the standard resistor, the other end of the super capacitor is provided with a wiring terminal, one end of the standard resistor is connected with the super capacitor, and the other end of the standard resistor is provided with a wiring terminal. The number of the super capacitors and the number of the resistors are the same, and one or more super capacitors are connected corresponding to one or more resistors to form mutually independent branches.
Optionally, the control unit includes a charging unit and a discharging unit, the charging unit is connected to one end of the super capacitor and is configured to charge the super capacitor at a preset voltage, and the discharging unit is connected to the other end of the super capacitor and is configured to discharge the super capacitor at the preset voltage.
The present application further provides a calibration method for a storage battery monitoring device, which is applied to the calibration apparatus for a storage battery monitoring device in the foregoing embodiment, and the method includes:
s301, adjusting the terminal voltage of the super capacitor to be the float charging voltage value of the storage battery monitoring equipment to be verified through the control unit according to verification requirements.
S302, acquiring a first voltage and a second voltage at two ends of the super capacitor.
And S303, calculating a voltage measurement error result according to the first voltage and the second voltage.
Optionally, the method further comprises: acquiring a first internal resistance and a second internal resistance of the super capacitor; and determining the internal resistance error of the storage battery monitoring equipment to be verified according to the first internal resistance, the second internal resistance and the standard resistance. Optionally, the obtaining the first internal resistance and the second internal resistance of the super capacitor includes: after the terminal voltage of the super capacitor is the float charge voltage value of the storage battery monitoring equipment to be verified, acquiring a first internal resistance of the super capacitor; and acquiring a second internal resistance of the super capacitor after the terminal voltage of the super capacitor is the float charging voltage value of the storage battery monitoring equipment to be verified.
Optionally, the determining, according to the first internal resistance, the second internal resistance, and a standard resistance, an internal resistance error of the storage battery monitoring device to be verified includes: calculating an absolute value of a difference value between the first internal resistance and the second internal resistance; and if the error between the absolute value and the standard resistor is higher than a preset precision index, judging that the storage battery monitoring equipment to be verified is unqualified. Specifically, in this embodiment, determining the internal resistance error of the to-be-verified storage battery monitoring device according to the first internal resistance, the second internal resistance, and the standard resistance specifically includes: connecting a storage battery monitoring module and a corresponding discharge control circuit of the storage battery online monitoring device with the storage battery online monitoring and verifying device, so that each channel of the storage battery monitoring module is connected with 1 super capacitor and 1 standard resistor in a measuring way; after the monomer super capacitor group is charged to the floating charge voltage value of the monitored storage battery, the storage battery online monitoring device obtains a first internal resistance; adjusting a storage battery monitoring module and a corresponding discharge control circuit of the storage battery online monitoring device to be connected with the storage battery online monitoring and verifying device, so that part of channels of the storage battery monitoring module are connected with 1 super capacitor in a measuring way, and part of channels of the storage battery monitoring module are connected with 1 super capacitor and 2 standard resistors in a measuring way; after the single super capacitor bank is charged to the floating charge voltage value of the monitored storage battery, the storage battery online monitoring device obtains a second internal resistance; and calculating the absolute value of the difference of the two measurement results of each channel of the storage battery monitoring module according to the first internal resistance and the second internal resistance, and comparing the absolute value with the standard resistance value to determine the internal resistance measurement precision result of the storage battery on-line monitoring device.
In the method for calibrating the storage battery online monitoring device, the storage battery online monitoring and calibrating device is connected into a storage battery monitoring module of the storage battery online monitoring device of the direct-current power supply system, the terminal voltage of each single super capacitor set is acquired by using the storage battery monitoring module and a voltage measuring unit, and a control module determines the voltage measurement precision condition of the storage battery online monitoring device according to the direct-current voltage acquired by the storage battery monitoring module and the direct-current voltage acquired by the voltage measuring unit; the method comprises the steps of obtaining the internal resistance of each single super capacitor bank and 1 standard resistor by using a discharge control loop of the storage battery online monitoring device, adjusting the wiring mode between a storage battery monitoring module and the storage battery online monitoring and checking device, obtaining the internal resistance of part of the single super capacitor banks by using the discharge control loop of the storage battery online monitoring device, obtaining the internal resistances of part of the single super capacitor banks and 2 standard resistors, calculating the absolute value of the difference of two measurement results of each channel of the storage battery monitoring module, comparing the absolute value with the standard resistor value, determining the internal resistance measurement precision condition of the storage battery online monitoring device, ensuring the safe operation of a direct current power supply system, and having the characteristic of simple realization principle.
As shown in fig. 4, when the verification method of the storage battery monitoring device provided in this embodiment is applied to a dc power supply system, the dc power supply system includes a first dc power supply system and a second dc power supply system, and the verification method of the storage battery online monitoring device includes the following steps:
step one, connecting storage battery online monitoring and checking devices with corresponding quantity according to the quantity of storage battery monitoring modules of the storage battery online monitoring device.
And step two, the storage battery on-line monitoring and checking device utilizes the charge and discharge control unit to adjust the voltage of the single super capacitor bank end to the floating charge voltage value of the storage battery to be detected according to the checking requirement of the storage battery on-line monitoring device.
And step three, starting voltage sampling by the storage battery online monitoring device and the storage battery online monitoring and checking device.
And step four, acquiring a first voltage and a second voltage at two ends of the single super capacitor bank.
And fifthly, determining a voltage measurement error result of the storage battery online monitoring device of the station direct-current power supply system according to the first voltage and the second voltage.
The storage battery online monitoring and checking device can be used for checking whether the voltage precision of the storage battery online monitoring device of the direct-current power supply system meets the technical requirement, for example, when the error between the first voltage acquired by the measurement module of the storage battery online monitoring device and the second voltage acquired by the voltage measurement unit of the storage battery online monitoring and checking device is higher than the voltage precision technical index of the storage battery online monitoring device, the voltage measurement precision of the measurement module of the storage battery online monitoring device can be judged to be unqualified.
In addition, the application also provides a calibration system of the storage battery monitoring equipment, and the system comprises the calibration device of the storage battery monitoring equipment in the previous embodiment.
In alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flowcharts of the present application are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and in which sub-operations described as part of larger operations are performed independently.
Furthermore, although the present application is described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the functions and/or features may be integrated in a single physical device and/or software module, or one or more functions and/or features may be implemented in separate physical devices or software modules. It will also be appreciated that a detailed discussion regarding the actual implementation of each module is not necessary for an understanding of the present application. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be understood within the ordinary skill of an engineer, given the nature, function, and internal relationship of the modules. Accordingly, those skilled in the art can, using ordinary skill, practice the present application as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative of and not intended to limit the scope of the application, which is defined by the appended claims and their full scope of equivalents.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the foregoing description of the specification, reference to the description of "one embodiment/example," "another embodiment/example," or "certain embodiments/examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A calibration device for a battery monitoring apparatus, the device comprising: treat check-up battery monitoring facilities, super capacitor, the control unit, balanced unit and standard resistance unit, treat check-up battery monitoring facilities with super capacitor connects, balanced unit, standard resistance unit respectively with super capacitor connects, is used for treat check-up battery monitoring facilities measuring voltage precision and internal resistance precision, the control unit with treat check-up battery monitoring facilities, super capacitor, balanced unit, standard resistance unit connect, be used for control treat check-up battery monitoring facilities, super capacitor, balanced unit and standard resistance unit operation.
2. The battery monitoring equipment calibration device according to claim 1, further comprising a voltage equalizing circuit, wherein the voltage equalizing circuit is connected in parallel with the super capacitor and is used for keeping the terminal voltage of the super capacitor consistent during charging.
3. The battery monitoring equipment calibration device according to claim 1, wherein the super capacitors are connected in series with equivalent resistors to form a super capacitor bank for simulating a series battery pack, wherein the number of the super capacitors is the same as that of the equivalent resistors.
4. The checking device for the storage battery monitoring equipment as claimed in claim 3, wherein one end of the super capacitor is connected with the standard resistor, the other end of the super capacitor is provided with a connecting terminal, one end of the standard resistor is connected with the super capacitor, and the other end of the standard resistor is provided with a connecting terminal.
5. The checking device of the storage battery monitoring equipment as claimed in claim 1, wherein the control unit comprises a charging unit and a discharging unit, the charging unit is connected with one end of the super capacitor and used for charging the super capacitor at a preset voltage, and the discharging unit is connected with the other end of the super capacitor and used for discharging the super capacitor at the preset voltage.
6. A verification method of a battery monitoring apparatus, which is applied to a verification device of a battery monitoring apparatus according to any one of claims 1 to 5, the method comprising:
according to the verification requirement, the terminal voltage of the super capacitor is adjusted to be the float charging voltage value of the storage battery monitoring equipment to be verified through the control unit;
acquiring a first voltage and a second voltage at two ends of the super capacitor;
and calculating a voltage measurement error result according to the first voltage and the second voltage.
7. The method of claim 6, further comprising:
acquiring a first internal resistance and a second internal resistance of the super capacitor;
and determining the internal resistance error of the storage battery monitoring equipment to be verified according to the first internal resistance, the second internal resistance and the standard resistance.
8. The method for checking the storage battery monitoring device according to claim 7, wherein the obtaining the first internal resistance and the second internal resistance of the super capacitor comprises:
after the terminal voltage of the super capacitor is the float charging voltage value of the storage battery monitoring equipment to be verified, acquiring a first internal resistance of the super capacitor;
and acquiring a second internal resistance of the super capacitor after the terminal voltage of the super capacitor is the float charging voltage value of the storage battery monitoring equipment to be verified.
9. The method for verifying the storage battery monitoring device according to claim 7, wherein the determining the internal resistance error of the storage battery monitoring device to be verified according to the first internal resistance, the second internal resistance and a standard resistance comprises:
calculating an absolute value of a difference value between the first internal resistance and the second internal resistance;
and if the error between the absolute value and the standard resistor is higher than a preset precision index, judging that the storage battery monitoring equipment to be verified is unqualified.
10. Checking system for battery monitoring devices, characterized in that it comprises a checking device for battery monitoring devices according to any of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210180355.8A CN114624605A (en) | 2022-02-25 | 2022-02-25 | Checking device, method and system for storage battery monitoring equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210180355.8A CN114624605A (en) | 2022-02-25 | 2022-02-25 | Checking device, method and system for storage battery monitoring equipment |
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