CN112858849B - Offline detection method and device with insulation detection function - Google Patents
Offline detection method and device with insulation detection function Download PDFInfo
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- CN112858849B CN112858849B CN202110025169.2A CN202110025169A CN112858849B CN 112858849 B CN112858849 B CN 112858849B CN 202110025169 A CN202110025169 A CN 202110025169A CN 112858849 B CN112858849 B CN 112858849B
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- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
According to the method and the device for detecting the offline of the insulation detection function, a first control signal and a second control signal are respectively obtained, and the first insulation detection equipment or the second insulation detection equipment is controlled to detect the insulation resistance of the main positive or main negative pair energy storage direct current charging pile shell of the high-voltage bus, namely the first insulation resistance; controlling the first insulation detection device or the second insulation detection device to be connected with a known resistor, wherein the known resistor is required by self insulation detection in the first insulation detection device or the second insulation detection device; controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or main negative pair energy storage direct current charging shell of the high-voltage bus, namely the second insulation resistance; when the resistance value of the second insulation resistor is equal to the resistance value of the first insulation resistor and the resistance value of the known resistor connected in parallel, the insulation detection function of the first insulation detection device or the second insulation detection device is determined to be normal, and effective detection of the insulation detection function is realized.
Description
Technical Field
The application relates to high-voltage insulation detection in the technical field of new energy, in particular to an offline detection method and device with an insulation detection function.
Background
In the related art, for a direct current charging pile with energy storage (a power battery pack or other energy storage systems are arranged in the pile), a BMS (Battery Management System, a battery management system) and an EMS (Energy Management System, an energy management system) are generally arranged in the pile, and conventionally, when the whole machine is in offline test, high-voltage insulation detection is required for the BMS and the EMS in brand new equipment.
However, the high-voltage insulation detection of the BMS and the EMS are not out of the pair, so that the high-voltage insulation detection function of the analog insulation resistance verification controller cannot be added through an external test tool during the whole machine offline test.
Disclosure of Invention
The application provides a method and a device for detecting the insulation detection function in a down-line mode, so that effective detection of the insulation detection function of an energy storage direct current charging pile is realized when the complete machine is in a down-line mode.
In order to achieve the above object, the present application provides the following technical solutions:
the utility model provides an insulation detects off-line detection method of function, is applied to energy storage direct current fills electric pile, energy storage direct current fills electric pile includes: a first insulation detection device and a second insulation detection device, the method:
acquiring a first control signal, and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely, the first insulation resistance;
controlling the first insulation detection device or the second insulation detection device to be connected with a known resistor, wherein the known resistor is a known resistor required by self insulation detection in the first insulation detection device or the second insulation detection device;
acquiring a second control signal, and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely, the second insulation resistance;
determining whether the positive resistance value of the second insulation resistor is equal to the resistance value of the first insulation resistor and the known resistor connected in parallel;
and if the positive resistance value of the second insulation resistor is equal to the resistance value of the first insulation resistor and the known resistor which are connected in parallel, determining that the insulation detection function of the first insulation detection device or the second insulation detection device is normal.
Wherein, energy storage direct current fills electric pile still includes: the first high-voltage device and the second high-voltage device acquire the first control signal specifically:
and when a switch between the first high-voltage equipment and the second high-voltage equipment is closed, determining the received control signal as the first control signal.
The second control signal is obtained specifically as follows:
when a switch in the first insulation detection device or the second insulation detection device is closed, the received control signal is determined to be the second control signal.
The utility model provides an insulating detection function's detection device that rolls off production line is applied to energy storage direct current and fills electric pile, energy storage direct current fills electric pile includes: a first insulation detection device and a second insulation detection device, the apparatus comprising:
the first control unit is used for acquiring a first control signal and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely the first insulation resistance;
the second control unit is used for controlling the first insulation detection equipment or the second insulation detection equipment to be connected with a known resistor, wherein the known resistor is a known resistor required by self insulation detection in the first insulation detection equipment or the second insulation detection equipment;
the third control unit is used for acquiring a second control signal and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely the second insulation resistance;
a judging unit configured to judge whether or not a positive resistance value of the second insulation resistance is equal to a resistance value of the first insulation resistance and the known resistance connected in parallel;
and the determining unit is used for determining that the insulation detection function of the first insulation detection device or the second insulation detection device is normal if the positive resistance value of the second insulation resistance is equal to the resistance value of the first insulation resistance and the known resistance which are connected in parallel.
Wherein, energy storage direct current fills electric pile still includes: the first control unit is specifically configured to:
and when a switch between the first high-voltage equipment and the second high-voltage equipment is closed, determining the received control signal as the first control signal.
Wherein, the second control unit is specifically configured to:
when a switch in the first insulation detection device or the second insulation detection device is closed, the received control signal is determined to be the second control signal.
A storage medium comprising a stored program, wherein the program, when run, controls a device in which the storage medium is located to perform a method of off-line detection of an insulation detection function as described above.
An electronic device comprising at least one processor, and at least one memory, bus connected to the processor; the processor and the memory complete communication with each other through the bus; the processor is configured to invoke the program instructions in the memory to perform the method of offline detection of the insulation detection function as described above.
The application discloses insulation detection function's off-line detection method and device is applied to energy storage direct current and fills electric pile, energy storage direct current fills electric pile and includes: a first insulation detection device and a second insulation detection device, the method: acquiring a first control signal, and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely, the first insulation resistance; controlling the first insulation detection device or the second insulation detection device to be connected with a known resistor, wherein the known resistor is required by self insulation detection in the first insulation detection device or the second insulation detection device; controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely the second insulation resistance; judging whether the resistance value of the second insulation resistor is equal to the resistance value of the first insulation resistor and the known resistor which are connected in parallel; if yes, determining that the insulation detection function of the first insulation detection equipment or the second insulation detection equipment is normal. According to the insulation detection device and the insulation detection method, the characteristics of the insulation circuit of the first insulation detection device and the insulation circuit of the second insulation detection device are detected mutually when the whole machine is offline, so that effective detection of the insulation detection function of the energy storage direct current charging pile is achieved when the whole machine is offline.
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In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an energy storage system disclosed in an embodiment of the present application;
FIG. 2 is a flowchart of a method for detecting the offline of an insulation detection function disclosed in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a charging pile system according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an offline detection device with an insulation detection function according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
As shown in fig. 1, the invention aims to perform mutual detection when the whole machine is off-line by the characteristics of the insulation circuits of the two, so as to meet the detection of respective insulation detection functions when the whole machine is off-line.
In fig. 1, R0 is a known resistance required for insulation detection in the insulation detection device; K1-K10 are switches (can be optocouplers, photomos, relays, etc.); rins+/Rins-is the insulation resistance of the high-voltage bus to PE; A/D1 and A/D2 are insulation detection voltage samples of insulation detection equipment; PE is the whole shell of the electrical equipment.
It should be noted that, the whole machine off-line test is the last procedure before the product leaves the factory, the integrity of the product must be ensured, and any disassembly and assembly process cannot be performed. For the insulation test shown in fig. 1, the whole electrical network is inside the whole machine, and the external known quantity cannot be increased to verify the function of the equipment; therefore, according to the characteristics of the internal circuit of the device, the insulation detection function of the insulation detection device can be detected whether the insulation detection function is normal or not by adding the known resistor in the existing circuit between the high-voltage bus and the PE.
Fig. 2 is a schematic flow chart of an offline detection method with an insulation detection function according to an embodiment of the present application.
As shown in fig. 2, an embodiment of the present application provides an offline detection method with an insulation detection function, which is characterized in that the offline detection method is applied to an energy storage dc charging pile, as shown in fig. 1, and the energy storage dc charging pile includes: a first insulation detection device (high voltage device 1) and a second insulation detection device (high voltage device 2), the method:
s201: and acquiring a first control signal, and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative pair of the high-voltage bus to the energy storage direct current charging pile shell, namely the first insulation resistance.
S202: controlling the first insulation detection device or the second insulation detection device to be connected with a known resistor, wherein the known resistor is a known resistor required by self insulation detection in the first insulation detection device or the second insulation detection device
S203: and acquiring a second control signal, and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely the second insulation resistance.
S204: and judging whether the resistance value of the second insulation resistor is equal to the resistance value of the first insulation resistor and the known resistor which are connected in parallel.
S205: and if the resistance value of the second insulation resistor is equal to the resistance value of the first insulation resistor and the known resistor which are connected in parallel, determining that the insulation detection function of the first insulation detection device or the second insulation detection device is normal.
It should be further noted that the energy storage direct current charging pile further includes: the first high-voltage device and the second high-voltage device acquire the first control signal specifically:
and when a switch between the first high-voltage equipment and the second high-voltage equipment is closed, determining the received control signal as the first control signal.
It should be further noted that, the obtaining the second control signal specifically includes:
when a switch in the first insulation detection device or the second insulation detection device is closed, the received control signal is determined to be the second control signal.
The method for detecting the insulation function in the off-line mode is specifically described with reference to fig. 1:
the insulation function offline detection method of the insulation detection equipment 1 comprises the following steps:
1) Closing K9 and K10, wherein the insulation resistance of the main positive pair PE and the main negative pair PE of the high-voltage bus detected by the insulation detection equipment 1 is respectively recorded as Rins1+ and Rins1-;
2) Closing K1, K3 and K4, and detecting the insulation resistances of the main positive pair PE and the main negative pair PE of the high-voltage bus by the insulation detection equipment 1 to obtain Rins2+ and Rins2-;
3) Judging whether the rins2+ is equal to (or meets a certain deviation, wherein the deviation value is determined by the accuracy of an insulation detection circuit), and if so, judging that the insulation detection function is normal, and if not, judging that the insulation detection function is abnormal.
The insulation function offline detection method of the insulation detection equipment 2 comprises the following steps:
1) Closing K9 and K10, and detecting insulation resistances of the main positive pair PE and the main negative pair PE of the high-voltage bus by using the insulation detection device 2 respectively as Rins1+ and Rins1-;
2) Closing K5, K7 and K8, and then detecting the insulation resistances of the main positive pair PE and the main negative pair PE of the high-voltage bus by the insulation detection equipment 2 to obtain Rins2+ and Rins2-;
3) Judging whether the rins2+ is equal to (or meets a certain deviation, wherein the deviation value is determined by the accuracy of an insulation detection circuit), and if so, judging that the insulation detection function is normal, and if not, judging that the insulation detection function is abnormal.
As shown in fig. 3, in the embodiment of the present application, in fig. 3, R0 is a known resistance required for insulation detection in BMS or EMS; K1-K10 are switches (can be optocouplers, photomos, relays, etc.); R+/R-is the insulation resistance of the high-voltage bus to PE; the A/D1 and the A/D2 are insulation detection voltage samples of BMS or EMS; PE is the whole shell of the charging pile; BAT+ is the main positive of the energy storage battery of the charging pile; BAT-is the primary negative of the energy storage battery that charges the stake.
As shown in fig. 3, the BMS is responsible for high voltage and insulation detection of the pack end of the energy storage battery, and the EMS is responsible for high voltage and insulation detection of the AC/DC end. The insulation detection electric network of BMS and EMS is inside the electric pile that fills, and when complete machine off-line detection, can't add the intervention and verify whether insulation detection circuit function is normal.
It should be noted that, the main working states of the charging pile include: the AC/DC charges (supplements energy to) the energy storage battery pack in the charging pile, and when the vehicle is charged, the energy storage battery pack and the AD/DC charge together the external vehicle (the vehicle schematic diagram is not shown in the above figures).
The invention aims to realize the function mutual inspection of the insulation detection circuits of the BMS and the EMS through the strategy inside the controller on the premise of no external intervention, and the function confirmation of the BMS and the EMS during the whole machine offline test is achieved.
The offline detection method for performing the insulation detection function by using the charging pile in combination with fig. 3 comprises the following steps:
the EMS insulation function offline detection method comprises the following steps:
1) Closing K9 and K10, and marking insulation resistances of main positive and main negative pairs PE of the high-voltage bus detected by EMS as Rins1+ and Rins1-;
2) Closing K1, K3 and K4, and detecting insulation resistances of the main positive pair PE and the main negative pair PE of the high-voltage bus by EMS again to obtain Rins2+ and Rins2-;
3) Judging whether rins2+ is equal to (or meets a certain deviation, wherein the deviation value is determined by the accuracy of an insulation detection circuit), and if so, judging that the insulation detection function is normal, and if not, judging that the insulation detection function is abnormal.
The BMS insulation function offline detection method comprises the following steps:
1) Closing K9 and K10, and marking insulation resistances of the main positive pair PE and the main negative pair PE of the BMS detection high-voltage bus as Rins1+ and Rins1-;
2) Closing K5, K7 and K8, and detecting insulation resistances of the main positive pair PE and the main negative pair PE of the high-voltage bus by the BMS again to obtain Rins2+ and Rins2-;
3) Judging whether rins2+ is equal to (or meets a certain deviation, wherein the deviation value is determined by the accuracy of an insulation detection circuit), and if so, judging that the insulation detection function is normal, and if not, judging that the insulation detection function is abnormal.
The offline detection method of the insulation detection function is applied to an energy storage direct current charging pile, and the energy storage direct current charging pile comprises: a first insulation detection device and a second insulation detection device, the method: acquiring a first control signal, and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely, the first insulation resistance; controlling the first insulation detection device or the second insulation detection device to be connected with a known resistor, wherein the known resistor is required by self insulation detection in the first insulation detection device or the second insulation detection device; controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely the second insulation resistance; judging whether the resistance value of the second insulation resistor is equal to the resistance value of the first insulation resistor and the known resistor which are connected in parallel; if yes, determining that the insulation detection function of the first insulation detection equipment or the second insulation detection equipment is normal. According to the insulation detection device and the insulation detection method, the characteristics of the insulation circuit of the first insulation detection device and the insulation circuit of the second insulation detection device are detected mutually when the whole machine is offline, so that effective detection of the insulation detection function of the energy storage direct current charging pile is achieved when the whole machine is offline.
Referring to fig. 4, an offline detection method with an insulation detection function disclosed based on the foregoing embodiment correspondingly discloses an offline detection device with an insulation detection function, which is applied to an energy storage dc charging pile, where the energy storage dc charging pile includes: a first insulation detection device and a second insulation detection device, the apparatus comprising:
the first control unit 401 is configured to obtain a first control signal, and control the first insulation detection device or the second insulation detection device to detect an insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, that is, the first insulation resistance;
a second control unit 402, configured to control the first insulation detection device or the second insulation detection device to access a known resistance, where the known resistance is a known resistance required for self insulation detection in the first insulation detection device or the second insulation detection device;
the third control unit 403 is configured to obtain a second control signal, and control the first insulation detection device or the second insulation detection device to detect an insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, that is, the second insulation resistance;
a judging unit 404 for judging whether the resistance value of the second insulation resistance is equal to the resistance value of the first insulation resistance and the known resistance connected in parallel;
and a determining unit 405, configured to determine that the insulation detection function of the first insulation detection device or the second insulation detection device is normal if the resistance value of the second insulation resistance is equal to the resistance value of the first insulation resistance and the known resistance connected in parallel.
Further, the energy storage direct current fills electric pile still includes: the first control unit 401 is specifically configured to:
and when a switch between the first high-voltage equipment and the second high-voltage equipment is closed, determining the received control signal as the first control signal.
Further, the second control unit 402 is specifically configured to:
when a switch in the first insulation detection device or the second insulation detection device is closed, the received control signal is determined to be the second control signal.
The off-line detection device of the insulation detection function comprises a processor and a memory, wherein the first control unit, the second control unit, the third control unit, the judging unit, the determining unit and the like are all stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The inner core can be provided with one or more than one, and mutual detection is carried out when the whole machine is offline through the characteristics of the insulating circuits of the first insulating detection equipment and the second insulating detection equipment so as to realize effective detection of the insulating detection function of the energy storage direct current charging pile when the whole machine is offline.
The embodiment of the application provides a storage medium, on which a program is stored, which when executed by a processor, implements a method for detecting the disconnection of the insulation detection function.
The embodiment of the application provides a processor, which is used for running a program, wherein the program runs to execute the off-line detection method of the insulation detection function.
An embodiment of the present application provides an electronic device, as shown in fig. 5, where the electronic device 50 includes at least one processor 501, and at least one memory 502 and a bus 503 connected to the processor; wherein, the processor 501 and the memory 502 complete communication with each other through the bus 503; the processor 501 is configured to invoke the program instructions in the memory 502 to perform the offline detection method of the insulation detection function described above.
The electronic device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application also provides a computer program product adapted to perform, when executed on a data processing device, a program initialized with the method steps of:
acquiring a first control signal, and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely, the first insulation resistance;
controlling the first insulation detection device or the second insulation detection device to be connected with a known resistor, wherein the known resistor is a known resistor required by self insulation detection in the first insulation detection device or the second insulation detection device;
acquiring a second control signal, and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely, the second insulation resistance;
determining whether the resistance value of the second insulation resistor is equal to the resistance value of the first insulation resistor and the known resistor connected in parallel;
and if the resistance value of the second insulation resistor is equal to the resistance value of the first insulation resistor and the known resistor which are connected in parallel, determining that the insulation detection function of the first insulation detection device or the second insulation detection device is normal.
Preferably, further, the energy storage direct current fills electric pile still includes: the first high-voltage device and the second high-voltage device acquire the first control signal specifically:
and when a switch between the first high-voltage equipment and the second high-voltage equipment is closed, determining the received control signal as the first control signal.
Preferably, further, the acquiring the second control signal specifically includes:
when a switch in the first insulation detection device or the second insulation detection device is closed, the received control signal is determined to be the second control signal.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, the device includes one or more processors (CPUs), memory, and a bus. The device may also include input/output interfaces, network interfaces, and the like.
The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip. Memory is an example of a computer-readable medium.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (4)
1. The utility model provides an insulation detects off-line detection method of function, its characterized in that is applied to energy storage direct current fills electric pile, energy storage direct current fills electric pile includes: a first insulation detection device, a second insulation detection device, a first high voltage device and a second high voltage device, the method comprising:
when a switch between the first high-voltage equipment and the second high-voltage equipment is closed, determining the received control signal as a first control signal, and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely the first insulation resistance;
controlling the first insulation detection device or the second insulation detection device to be connected with a known resistor, wherein the known resistor is a known resistor required by self insulation detection in the first insulation detection device or the second insulation detection device;
when a switch in the first insulation detection equipment or the second insulation detection equipment is closed, determining the received control signal as a second control signal, and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely the second insulation resistance;
determining whether the positive resistance value of the second insulation resistor is equal to the parallel resistance value of the first insulation resistor and the known resistor;
and if the positive resistance value of the second insulation resistor is equal to the resistance value of the first insulation resistor and the known resistor which are connected in parallel, determining that the insulation detection function of the first insulation detection device or the second insulation detection device is normal.
2. The utility model provides an insulating detection function's detection device that rolls off production line, its characterized in that is applied to energy storage direct current and fills electric pile, energy storage direct current fills electric pile includes: first insulation detection equipment, second insulation detection equipment, first high-voltage equipment and second high-voltage equipment, the device includes:
the first control unit is used for determining the received control signal as a first control signal when a switch between the first high-voltage equipment and the second high-voltage equipment is closed, and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct-current charging pile shell, namely the first insulation resistance;
the second control unit is used for controlling the first insulation detection equipment or the second insulation detection equipment to be connected with a known resistor, wherein the known resistor is a known resistor required by self insulation detection in the first insulation detection equipment or the second insulation detection equipment;
the third control unit is used for determining the received control signal as a second control signal when the switch in the first insulation detection equipment or the second insulation detection equipment is closed, and controlling the first insulation detection equipment or the second insulation detection equipment to detect the insulation resistance of the main positive or the main negative of the high-voltage bus to the energy storage direct current charging pile shell, namely the second insulation resistance;
a judging unit for judging whether the positive resistance value of the second insulation resistor is equal to the parallel resistance value of the first insulation resistor and the known resistor;
and the determining unit is used for determining that the insulation detection function of the first insulation detection device or the second insulation detection device is normal if the positive resistance value of the second insulation resistance is equal to the resistance value of the first insulation resistance and the known resistance which are connected in parallel.
3. A storage medium comprising a stored program, wherein the program, when run, controls a device in which the storage medium is located to perform the method of detecting an insulation as defined in claim 1.
4. An electronic device comprising at least one processor, and at least one memory, bus coupled to the processor; the processor and the memory complete communication with each other through the bus; the processor is configured to invoke program instructions in the memory to perform the method of off-line detection of insulation detection functionality of claim 1.
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| CN107490750B (en) * | 2016-10-21 | 2020-12-11 | 宝沃汽车（中国）有限公司 | Electric vehicle and insulation detection method, device and system thereof |
| CN108802494B (en) * | 2017-05-03 | 2020-03-20 | 华为技术有限公司 | Detection circuit, detection method and device of insulation resistance |
| CN109212385B (en) * | 2017-06-29 | 2020-11-13 | 宝沃汽车（中国）有限公司 | Whole vehicle circuit insulation detection method and device of electric vehicle |
| CN109116281A (en) * | 2018-09-25 | 2019-01-01 | 北京长城华冠汽车科技股份有限公司 | A kind of diagnostic system and method for batteries of electric automobile group insulating resistor detecting circuit |
| CN109541420B (en) * | 2018-12-25 | 2021-07-16 | 北京新能源汽车股份有限公司 | High-voltage system insulation detection method and device and electric automobile |
| CN110426556B (en) * | 2019-08-14 | 2021-12-07 | 江铃控股有限公司 | Method for testing insulation resistance of whole vehicle |
| CN111060791B (en) * | 2019-12-30 | 2022-05-03 | 华人运通(江苏)技术有限公司 | Insulation fault detection method and device, electric vehicle, terminal equipment and medium |
| CN111208395A (en) * | 2020-01-16 | 2020-05-29 | 一汽解放汽车有限公司 | Vehicle insulation state detection method and device, vehicle and storage medium |
| CN111208350B (en) * | 2020-03-11 | 2022-04-29 | 上海度普新能源科技有限公司 | Insulation detection circuit and energy storage charging equipment |
| CN111157797A (en) * | 2020-03-11 | 2020-05-15 | 上海度普新能源科技有限公司 | Insulation detection circuit and energy storage charging equipment |
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Effective date of registration: 20240108 Address after: Room 304, 3rd Floor, Building 1, No. 111 Wusongjiang Avenue, Guoxiang Street, Wuzhong District, Suzhou City, Jiangsu Province, 215124 Patentee after: JIANGSU DUPU NEW ENERGY TECHNOLOGY Co.,Ltd. Address before: Room 1001, 10 / F, office building, Shihu Jinling Plaza, 88 Nanxijiang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province, 215128 Patentee before: DuPu (Suzhou) New Energy Technology Co.,Ltd. Patentee before: DuPu (Shanghai) New Energy Technology Co.,Ltd. |