System and method for monitoring health state of power storage equipment

Abstract

The embodiment of the invention discloses a health state monitoring system and method for power storage equipment. The system comprises a data acquisition module, an electromagnetic interference isolation module and an equipment state analysis module, the electromagnetic interference isolation module is used for isolating the power storage equipment and the data acquisition module in the electromagnetic interference isolation module when the data acquisition module works, so that the electromagnetic interference equipment in the ring main unit is prevented from influencing the accuracy of the voltage value and the current value acquired by the data acquisition module; the equipment state analysis module is used for determining that the electricity storage equipment is normal at the current time point according to the current voltage value and the current current value acquired by the data acquisition module at the current time point, then obtaining the current operation period of the current time point, and determining the current state of the electricity storage equipment according to the current voltage average value and the current average value at the current operation period; and the health state of the power storage equipment in the current operation period is determined, so that the health state monitoring cost is reduced, and the health state determination efficiency and accuracy are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to a health status monitoring system and method for power storage equipment. Background Art

[0002] In the power industry, the ring main unit is an important power equipment that plays an important role in protection, distribution, and monitoring. Among them, the protection device and distribution terminal in the ring main unit are the core facilities of the ring main unit, and are powered by two separate sets of power storage devices. However, due to the physical characteristics of the power storage device, as the power storage device is used for a longer time or the environment deteriorates, the power storage device will experience performance degradation or damage, causing abnormalities in the protection device and distribution terminal, and in severe cases, causing accidents such as large-scale power outages, battery fires or explosions.

[0003] In the prior art, the power storage devices in the distribution network ring main cabinet are usually inspected regularly by manual inspection, or the health status of the power storage devices is obtained only when the protection device or the distribution terminal fails.

[0004] However, due to the large number of ring network cabinets in operation and their scattered installation locations, it is difficult to accurately inspect the health status of each power storage device configured in the ring network cabinet in a timely manner through existing technologies, which affects the monitoring efficiency of the power storage devices. Secondly, for the method of manually inspecting power storage devices, when there are many power storage devices and their installation locations are scattered, the inspection cost will be too high and personal safety hazards will easily occur. Summary of the invention

[0005] The present invention provides a system and method for monitoring the health status of an electricity storage device, which can reduce the cost of monitoring the health status of the electricity storage device and improve the efficiency and accuracy of determining the health status of the electricity storage device.

[0006] In a first aspect, an embodiment of the present invention provides a health status monitoring system for an electric storage device, the system comprising: a data acquisition module, an electromagnetic interference isolation module and an equipment status analysis module;

[0007] Among them, the equipment status analysis module is connected to the data acquisition module, the data acquisition module is connected to the power storage device, the data acquisition module and the power storage device are arranged inside the electromagnetic interference isolation module, and the electromagnetic interference isolation module and the equipment status analysis module are both arranged inside the ring network cabinet;

[0008] The data acquisition module is used to obtain the voltage and current values ​​of the power storage device at different time points, and send the voltage and current values ​​to the device status analysis module;

[0009] The electromagnetic interference isolation module is used to isolate the power storage device and the data acquisition module in the electromagnetic interference isolation module when the data acquisition module is working, so as to prevent the electromagnetic interference device in the ring network cabinet from affecting the accuracy of the voltage and current values ​​collected by the data acquisition module;

[0010] The device status analysis module is used to determine that the power storage device is normal at the current time point based on the current voltage value and the current current value collected by the data acquisition module at the current time point, obtain the current operation cycle at the current time point, and determine the health status of the power storage device in the current operation cycle based on the current voltage average value and the current current average value in the current operation cycle.

[0011] Optionally, the device status analysis module is specifically used to: after receiving the current voltage value and the current current value collected by the data acquisition module at the current time point, and determining that the current operation cycle in which the current time point is located is not the initial operation cycle of the power storage device, obtain the previous operation cycle in which the voltage value and the current value at the collection time point are closest to the current operation cycle; wherein each operation cycle includes a set number of time points; in the previous operation cycle, obtain the target time point corresponding to the current time point, and obtain the target voltage value and the target current value collected by the data acquisition module at the target time point; if the difference between the target voltage value and the current voltage value is less than a first preset voltage difference, and the difference between the target current value and the current current value is less than the first preset current difference, it is determined that the power storage device is normal at the current time point; if the difference between the target voltage value and the current voltage value is greater than or equal to the first preset voltage difference, or the difference between the target current value and the current current value is greater than or equal to the first preset current difference, it is determined that the power storage device is abnormal at the current time point.

[0012] Optionally, the device status analysis module is also specifically used to: when determining that the power storage device is normal at the current time point, obtain the current voltage average value and the current current average value in the current operation cycle, as well as the previous voltage average value and the previous current average value in the previous operation cycle; if the difference between the current voltage average value and the previous voltage average value is less than the second preset voltage difference, and the difference between the current current average value and the previous current average value is less than the second preset current difference, then determine whether each time point in the current operation cycle is greater than any time point in the preset operation cycle; if so, obtain the initial voltage average value and the initial current average value corresponding to the initial operation cycle, if the difference between the current voltage average value and the initial voltage average value is less than the third preset voltage difference, and the difference between the current current average value and the initial current average value is less than the third preset current difference, then determine that the power storage device is normal in the current operation cycle; if the difference between the current voltage average value and the initial voltage average value is greater than or equal to the third preset voltage difference, and the difference between the current current average value and the initial current average value is greater than or equal to the third preset current difference, then determine that the power storage device is abnormal in the current operation cycle; if not, directly output that the power storage device is normal in the current operation cycle.

[0013] Optionally, the device status analysis module is also used to: determine that the power storage device is abnormal in the current operating cycle if the difference between the current voltage average value and the previous voltage average value is greater than or equal to a second preset voltage difference, or the difference between the current current average value and the previous current average value is greater than or equal to a second preset current difference.

[0014] Optionally, the electromagnetic interference isolation module includes: an isolation cover, a first gear, a drive frame and a second gear; wherein the isolation cover is arranged above the power storage device and the data acquisition module, the first gear, the drive frame and the second gear are all arranged at the top of the isolation cover, and the drive frame is arranged between the first gear and the second gear; the sides of the isolation cover are arranged to be openings, each opening is provided with at least one rotating shaft, each rotating shaft is fixedly connected to a sealing plate, and each rotating shaft is fixedly connected to the first gear arranged at the top of the isolation cover; the second gear is used to drive the first gear connected to the driving frame to rotate through the drive frame, and drive the rotating shaft connected to the first gear through the first gear, so as to drive the sealing plate connected to the rotating shaft to rotate through the rotating shaft.

[0015] Optionally, the drive frame includes a first rack, a second rack and at least two connecting rods; wherein the two connecting rods are fixed between the first rack and the second rack, the first rack is meshingly connected to the first gear, and the second rack is meshingly connected to the second gear; the second rack is used to drive the first rack to rotate via the connecting rod.

[0016] Optionally, the electromagnetic interference isolation module also includes: a third rack; wherein a drive frame is arranged between the second gear and the first gear located on the first side of the isolation cover, and between the second gear and the first gear located on the third side of the isolation cover; a third rack is arranged between the second gear and the first gear located on the second side of the isolation cover, and between the second gear and the first gear located on the fourth side of the isolation cover; the first side and the third side are opposite sides, and the second side and the fourth side are opposite sides; one side of the third rack is meshingly connected with the second gear, and the other side of the third rack is meshingly connected with the first gear.

[0017] In a second aspect, an embodiment of the present invention further provides a method for monitoring the health status of an electric storage device, which is applied to a healthy status monitoring system of an electric storage device in any embodiment of the present invention, and the method includes:

[0018] The voltage and current values ​​of the power storage device at different time points are obtained through the data acquisition module, and the voltage and current values ​​are sent to the device status analysis module;

[0019] Through the electromagnetic interference isolation module, when the data acquisition module is working, the power storage device and the data acquisition module are isolated in the electromagnetic interference isolation module to prevent the electromagnetic interference equipment in the ring network cabinet from affecting the accuracy of the voltage and current values ​​collected by the data acquisition module;

[0020] Through the equipment status analysis module, according to the current voltage value and the current current value collected by the data acquisition module at the current time point, after determining that the energy storage device is normal at the current time point, the current operation cycle of the current time point is obtained, and according to the current voltage average value and the current current average value in the current operation cycle, the health status of the energy storage device in the current operation cycle is determined.

[0021] Optionally, determining whether the power storage device is normal at the current time point is based on the current voltage value and the current current value collected by the data acquisition module at the current time point, including: after receiving the current voltage value and the current current value collected by the data acquisition module at the current time point, and determining that the current operation cycle in which the current time point is located is not the initial operation cycle of the power storage device, obtaining the previous operation cycle in which the voltage value and the current value at the collection time point are closest to the current operation cycle; wherein each operation cycle includes a set number of time points; obtaining a target time point corresponding to the current time point in the previous operation cycle, and obtaining a target voltage value and a target current value collected by the data acquisition module at the target time point; if the difference between the target voltage value and the current voltage value is less than a first preset voltage difference, and the difference between the target current value and the current current value is less than the first preset current difference, determining that the power storage device is normal at the current time point.

[0022] Optionally, the health status of the power storage device in the current operating cycle is determined based on the current voltage average value and the current current average value in the current operating cycle, including: when it is determined that the power storage device is normal at the current time point, obtaining the current voltage average value and the current current average value in the current operating cycle, and the previous voltage average value and the previous current average value in the previous operating cycle; if the difference between the current voltage average value and the previous voltage average value is less than a second preset voltage difference, and the difference between the current current average value and the previous current average value is less than the second preset current difference, then judging whether each time point in the current operating cycle is greater than any time point in the preset operating cycle; if , then obtain the initial voltage average value and the initial current average value corresponding to the initial operation cycle. If the difference between the current voltage average value and the initial voltage average value is less than the third preset voltage difference, and the difference between the current current average value and the initial current average value is less than the third preset current difference, then determine that the power storage device is normal in the current operation cycle; if the difference between the current voltage average value and the initial voltage average value is greater than or equal to the third preset voltage difference, and the difference between the current current average value and the initial current average value is greater than or equal to the third preset current difference, then determine that the power storage device is abnormal in the current operation cycle; if not, directly output that the power storage device is normal in the current operation cycle.

[0023] The technical solution of the embodiment of the present invention monitors the health status of the energy storage battery through the data acquisition module and the equipment status analysis module, which solves the problem that the health status of the energy storage device is monitored manually, resulting in low efficiency and high cost of monitoring the energy storage device, reduces the cost of monitoring the health status of the energy storage device, and improves the efficiency of monitoring the health status of the energy storage device. Secondly, by providing an electromagnetic interference isolation module on the external cover of the data acquisition module and the energy storage device, it is possible to prevent the electromagnetic interference device in the ring network cabinet from affecting the accuracy of the voltage and current values ​​collected by the data acquisition module, thereby improving the accuracy of determining the health status of the energy storage device.

[0024] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1is a structural schematic diagram of a health status monitoring system for an electric storage device provided according to Embodiment 1 of the present invention;

[0027] Figure 2 is a schematic diagram for reflecting the position of an electromagnetic interference isolation module in a ring network cabinet according to an embodiment of the present invention;

[0028] Figure 3 is a structural schematic diagram of an electromagnetic interference isolation module provided according to an embodiment of the present invention;

[0029] Figure 4 This is a flow chart of a method for monitoring the health status of an electric storage device provided according to Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] Embodiment 1

[0033] Figure 1 1 is a schematic diagram of the structure of a health status monitoring system for an electric storage device provided according to Embodiment 1 of the present invention. This embodiment is applicable to the situation where the health status of an electric storage device arranged in a ring main unit is monitored.

[0034] like Figure 1 As shown, a health status monitoring system for an electric storage device disclosed in this embodiment includes: a data acquisition module 11 , an electromagnetic interference isolation module 12 and an equipment status analysis module 13 .

[0035] The device status analysis module 13 is connected to the data acquisition module 11, and the data acquisition module 11 is connected to the power storage device. The data acquisition module 11 and the power storage device are arranged inside the electromagnetic interference isolation module 12, and the electromagnetic interference isolation module 12 and the device status analysis module 13 are both arranged inside the ring network cabinet. Specifically, the position of the electromagnetic interference isolation module 12 in the ring network cabinet can be as follows: Figure 2 shown.

[0036] In this embodiment, there may be various types of power storage devices, such as batteries. The data acquisition module 11 may be used to obtain voltage and current values ​​of the power storage device at different time points, and send the voltage and current values ​​to the device status analysis module 13 .

[0037] Specifically, the preset overall test cycle can be divided into multiple operation cycles containing the same number of time points. Then, the voltage value and current value of the power storage device at a certain moment at different time points can be obtained through the data acquisition module 11, and the voltage value and current value at a certain moment are used as the voltage value and current value at the corresponding time point. Among them, the time point can be set according to user needs, such as day.

[0038] For example, assuming that the overall test cycle is half a year, each operating cycle can be set to 1 month, and the time point within the operating cycle can be set to a day. At this time, the voltage value and current value of the power storage device can be obtained through the data acquisition module 11 at a certain time of each day, and the voltage value and current value at a certain time can be used as the voltage value and current value at the corresponding time point (day).

[0039] The electromagnetic interference isolation module 12 can be used to isolate the power storage device and the data acquisition module 11 inside the electromagnetic interference isolation module 12 when the data acquisition module 11 is working, so as to prevent the electromagnetic interference equipment in the ring network cabinet from affecting the accuracy of the voltage and current values ​​collected by the data acquisition module 11.

[0040] Specifically, when the data acquisition module 11 collects the voltage value and current value of the power storage device, the electromagnetic interference generated by the electromagnetic interference device disposed outside the electromagnetic interference isolation module 12 can be isolated by the electromagnetic interference isolation module 12. The electromagnetic interference device can be a device configured in the ring network cabinet that can generate electromagnetic interference to the voltage value and current value of the power storage device. There can be many types of electromagnetic interference devices, such as switching power supplies, motors, inverters, and sensors.

[0041] The device status analysis module 13 can be used to determine that the power storage device is normal at the current time point based on the current voltage value and the current current value collected by the data acquisition module 11 at the current time point, obtain the current operation cycle at the current time point, and determine the health status of the power storage device in the current operation cycle based on the current voltage average value and the current current average value in the current operation cycle.

[0042] Specifically, the device state analysis module 13 can determine whether the power storage device is normal at the current time point according to the current voltage value, the voltage upper limit value, the current current value and the current upper limit value. Alternatively, the device state analysis module 13 can obtain the target time point corresponding to the current time point, as well as the target voltage value and the target current value of the power storage device at the target time point, and determine whether the power storage device is normal at the current time point according to the difference between the target voltage value and the current voltage value, and the difference between the target current value and the current current value.

[0043] If it is determined that the power storage device is normal at the current time point, the current operation cycle at the current time point and the historical operation cycle corresponding to the current operation cycle are obtained. Then, the historical voltage average value and the historical current average value under the historical operation cycle can be obtained, and the health status of the power storage device under the current operation cycle can be determined based on the difference between the historical voltage average value and the current voltage average value, and the difference between the historical current average value and the current current average value. Among them, the health status can include the power storage device being normal and the power storage device being abnormal.

[0044] The advantages of such a setting are that, firstly, compared with the method of manually inspecting the battery, monitoring the health status of the energy storage battery through the data acquisition module and the equipment status analysis module can reduce the cost of monitoring the health status of the power storage device and improve the efficiency of monitoring the health status of the power storage device. Secondly, after determining that the power storage device is normal at the current time point, further determining the health status of the power storage device in the current operation cycle can provide a basis for analyzing the abnormal causes of the power storage device while accurately determining the health status of the power storage device. For example, if the current voltage value of the power storage device is higher than the current voltage average value and higher than the preset voltage threshold, it can be determined that the abnormal cause of the power storage device is overcharged. Finally, by providing an electromagnetic interference isolation module on the external cover of the data acquisition module and the power storage device, it can be avoided that the electromagnetic interference equipment in the ring network cabinet affects the accuracy of the voltage and current values ​​collected by the data acquisition module, thereby improving the accuracy of determining the health status of the power storage device.

[0045] The technical solution of this embodiment provides a health status monitoring system for an electric storage device, the system comprising: a data acquisition module, an electromagnetic interference isolation module and an equipment status analysis module; wherein the data acquisition module is used to obtain the voltage value and the current value of the electric storage device at different time points, and send the voltage value and the current value to the equipment status analysis module; the electromagnetic interference isolation module is used to isolate the electric storage device and the data acquisition module in the electromagnetic interference isolation module when the data acquisition module is working, so as to prevent the electromagnetic interference device in the ring network cabinet from affecting the accuracy of the voltage value and the current value collected by the data acquisition module; the equipment status analysis module is used to determine that the electric storage device is normal at the current time point according to the current voltage value and the current current value collected by the data acquisition module at the current time point, obtain the current operation cycle at the current time point, and determine the health status of the electric storage device in the current operation cycle according to the current voltage average value and the current current average value in the current operation cycle, thereby solving the problem that the monitoring efficiency and cost of the electric storage device are low due to manual monitoring of the health status of the electric storage device, reducing the cost of monitoring the health status of the electric storage device, and improving the efficiency and accuracy of determining the health status of the electric storage device.

[0046] Embodiment 2

[0047] This embodiment is a further optimization and expansion based on the above embodiments, and can be combined with various optional technical solutions in the above implementation modes.

[0048] like Figure 1 As shown, a health status monitoring system for an electric storage device disclosed in this embodiment includes: a data acquisition module 11 , an electromagnetic interference isolation module 12 and an equipment status analysis module 13 .

[0049] In this embodiment, the device status analysis module 13 is specifically used for: after receiving the current voltage value and the current current value collected by the data acquisition module 11 at the current time point, and determining that the current operation cycle where the current time point is located is not the initial operation cycle of the power storage device, obtaining the previous operation cycle where the voltage value and the current value closest to the collection time point and the current operation cycle are located; wherein each operation cycle includes a set number of time points; obtaining a target time point corresponding to the current time point in the previous operation cycle, and obtaining a target voltage value and a target current value collected by the data acquisition module at the target time point; if the difference between the target voltage value and the current voltage value is less than a first preset voltage difference, and the difference between the target current value and the current current value is less than the first preset current difference, then determining that the power storage device is normal at the current time point; if the difference between the target voltage value and the current voltage value is greater than or equal to the first preset voltage difference, or the difference between the target current value and the current current value is greater than or equal to the first preset current difference, then determining that the power storage device is abnormal at the current time point.

[0050] In a specific embodiment, after receiving the current voltage value and the current current value collected by the data acquisition module 11 at the current time point, it can be determined whether the current operation cycle at the current time point is the initial operation cycle of the power storage device. If the current operation cycle at the current time point is not the initial operation cycle of the power storage device, the previous operation cycle where the voltage value and current value closest to the collection time point and the current operation cycle are located is obtained, and according to the position of the current time point in the current operation cycle, the target time point corresponding to the current time point is obtained in the previous operation cycle. Among them, the number of time points between the current time point and the target time point is the set number minus 1. If the current operation cycle at the current time point is the initial operation cycle of the power storage device, the current voltage value and the current current value at the current time point are directly used as reference data to subsequently determine the health status of the power storage device in other operation cycles.

[0051] The advantage of such a setting is that, in actual applications, the electromagnetic interference devices in the ring network cabinet do not operate at the same time. It is possible that multiple electromagnetic interference devices generate electromagnetic interference at the previous collection time point, but no electromagnetic interference device generates electromagnetic interference at the next collection time point, resulting in a large deviation in the data collected at adjacent time points. Therefore, the technical solution of this embodiment compares the current voltage value and the current current value in the current operation cycle with the target voltage value and the target current value in the previous operation cycle, so that when the electromagnetic interference isolation module fails, the health status of the energy storage device at the current time point can still be accurately determined, thereby further ensuring the accuracy of the health status of the energy storage device at the current time point.

[0052] Optionally, the device status analysis module 13 is also specifically used to: when it is determined that the power storage device is normal at the current time point, obtain the current voltage average value and the current current average value in the current operation cycle, as well as the previous voltage average value and the previous current average value in the previous operation cycle; if the difference between the current voltage average value and the previous voltage average value is less than a second preset voltage difference, and the difference between the current current average value and the previous current average value is less than the second preset current difference, then determine whether each time point in the current operation cycle is greater than any time point in the preset operation cycle; if so, obtain the initial operation cycle corresponding to the initial operation cycle. The voltage average value and the initial current average value. If the difference between the current voltage average value and the initial voltage average value is less than the third preset voltage difference, and the difference between the current current average value and the initial current average value is less than the third preset current difference, then it is determined that the energy storage device is normal in the current operation cycle; if the difference between the current voltage average value and the initial voltage average value is greater than or equal to the third preset voltage difference, and the difference between the current current average value and the initial current average value is greater than or equal to the third preset current difference, then it is determined that the energy storage device is abnormal in the current operation cycle; if not, it is directly output that the energy storage device is normal in the current operation cycle.

[0053] Exemplarily, assuming that the preset operating cycle is the third operating cycle, the current operating cycle is the fourth operating cycle, and whether each time point in the fourth operating cycle is greater than any time point in the third operating cycle, then after determining that the power storage device is normal in the current operating cycle based on the difference between the current voltage average value and the previous voltage average value, and the difference between the current current average value and the previous current average value, it is possible to determine whether the power storage device is normal in the current operating cycle again based on the difference between the current voltage average value and the initial voltage average value, and the difference between the current current average value and the initial current average value.

[0054] The advantage of such a setting is that after determining that the energy storage device is normal in the current operating cycle, whether the energy storage device is normal in the current operating cycle is determined again based on the difference between the current voltage average value and the initial voltage average value, as well as the difference between the current current average value and the initial current average value. This avoids the situation where the data collected in the current operating cycle and the previous operating cycle are abnormal due to the long-term operation of the energy storage device, resulting in inaccurate results in determining the health status of the energy storage device.

[0055] Optionally, the device status analysis module 13 is also used to: if the difference between the current voltage average value and the previous voltage average value is greater than or equal to a second preset voltage difference, or the difference between the current current average value and the previous current average value is greater than or equal to a second preset current difference, then determine that the power storage device is abnormal in the current operating cycle.

[0056] Optionally, the device status analysis module 13 may include a power conversion module, a communication conversion module, a 4G communication module and a data communication card. The power conversion module can be used to use the power supply in the ring network cabinet to power the device status analysis module 13. The communication conversion module can be used to convert the health status of the power storage device, and the voltage data and current data obtained by the data acquisition module 11 into a network digital signal that can be sent through the 4G communication module. The data communication card can be inserted into the 4G communication module for the 4G communication module to communicate with the user terminal.

[0057] The advantage of this setting is that by setting up a power supply conversion module, a communication conversion module, a 4G communication module and a data communication card in the equipment status analysis module, the health status of the power storage equipment can be fed back to the user in a timely manner and the user's operating instructions can be received, providing a basis for timely maintenance of the power storage equipment.

[0058] Optional, such as Figure 3 As shown, the electromagnetic interference isolation module 12 includes: an isolation cover 201 , a first gear 202 , a driving frame 203 and a second gear 204 .

[0059] The isolation cover 201 is disposed above the power storage device and the data acquisition module 11. The first gear 202, the drive frame 203 and the second gear 204 are all disposed at the top of the isolation cover 201, and the drive frame 203 is disposed between the first gear 202 and the second gear 204. The sides of the isolation cover 201 are all configured as openings 2011, and at least one rotating shaft 2012 is disposed in each opening 2011, and each rotating shaft 2012 is fixedly connected to a sealing plate 2013, and each rotating shaft 2012 is fixedly connected to the first gear 202 disposed at the top of the isolation cover 201.

[0060] In this embodiment, the second gear 204 is used to drive the first gear 202 connected to the driving frame 203 to rotate through the driving frame 203, and drive the rotating shaft 2012 connected to the first gear 202 through the first gear 202, so as to drive the sealing plate 2013 connected to the rotating shaft 2012 to rotate through the rotating shaft 2012.

[0061] In a specific implementation, after the second gear 204 is driven to rotate by the motor, the second gear 204 drives the driving frame 203 , so that the driving frame 203 drives the first gear 202 connected to the driving frame 203 to rotate.

[0062] Optional, such as Figure 3 As shown, the driving frame 203 includes a first rack 2031 , a second rack 2032 and at least two connecting rods 2033 .

[0063] The two connecting rods 2033 are fixed between the first rack 2031 and the second rack 2032. The first rack 2031 is meshed with the first gear 202, and the second rack 2032 is meshed with the second gear 204. The second rack 2032 is used to drive the first rack 2031 to drive the first gear 202 to rotate through the connecting rod 2033.

[0064] Optional, such as Figure 3 As shown, the electromagnetic interference isolation module 12 further includes: a third rack 205 .

[0065] Wherein, a driving frame 203 is arranged between the second gear 204 and the first gear 202 located on the first side of the isolation cover 201, and between the second gear 204 and the first gear 202 located on the third side of the isolation cover 201, and the first side of the isolation cover 201 and the third side of the isolation cover 201 are opposite sides. A third rack 205 is arranged between the second gear 204 and the first gear 202 located on the second side of the isolation cover 201, and between the second gear 204 and the first gear 202 located on the fourth side of the isolation cover 201, and the second side of the isolation cover 201 and the fourth side of the isolation cover 201 are opposite sides. One side of the third rack 205 is meshedly connected with the second gear 204, and the other side of the third rack 205 is meshedly connected with the first gear 202.

[0066] Specifically, after the second gear 204 is driven to rotate by the motor, the second gear 204 drives the third rack 205 , so that the third rack 205 drives the first gear 202 to rotate.

[0067] The advantage of such a setting is that, compared with the prior art of directly setting a metal isolation cover on the outside of the power storage device and the data acquisition module, the technical solution of this embodiment drives the sealing plate to rotate when the data acquisition module is working, so as to seal the opening of the isolation cover after all the sealing plates rotate a certain angle, thereby isolating all electromagnetic interference from outside the isolation cover, ensuring the accuracy of the voltage data and current data collected by the data acquisition module, and providing a basis for accurately determining the health status of the power storage device. By driving the sealing plate to rotate again when the data acquisition module stops working to open the opening of the isolation cover, it is avoided that the power storage device is sealed in the isolation cover for a long time, resulting in the heat emitted by the power storage device cannot be discharged in time, affecting the performance of the power storage device.

[0068] The above technical solution, after determining that the power storage device is normal in the current operation cycle, determines whether the power storage device is normal in the current operation cycle again based on the difference between the current voltage average value and the initial voltage average value, and the difference between the current current average value and the initial current average value, thereby avoiding the situation where the data collected in the current operation cycle and the previous operation cycle are abnormal due to the long-term operation of the power storage device, thereby making the health status determination result of the power storage device inaccurate. Secondly, by placing the isolation cover in a sealed state only when the data acquisition module is working, it avoids the situation where the power storage device is sealed in the isolation cover for a long time, resulting in the heat emitted by the power storage device cannot be discharged in time, affecting the performance of the power storage device.

[0069] Embodiment 3

[0070] Figure 4 It is a flow chart of a method for monitoring the health status of an electric storage device provided according to Embodiment 3 of the present invention. This embodiment is a further optimization and expansion based on the above embodiments, and can be combined with various optional technical solutions in the above implementation modes.

[0071] like Figure 4 As shown, a method for monitoring the health status of an electric storage device disclosed in this embodiment is applied to a health status monitoring system of an electric storage device, and the method includes:

[0072] S110, obtaining voltage values ​​and current values ​​of the power storage device at different time points through the data acquisition module, and sending the voltage values ​​and current values ​​to the device status analysis module.

[0073] In this step, specifically, the preset overall test cycle can be divided into multiple operating cycles containing the same number of time points, and the voltage value and current value of the power storage device at a certain moment at different time points can be obtained through the data acquisition module, and the voltage value and current value at a certain moment can be used as the voltage value and current value at the corresponding time point.

[0074] S120. When the data acquisition module is working, the power storage device and the data acquisition module are isolated in the electromagnetic interference isolation module through the electromagnetic interference isolation module to prevent the electromagnetic interference device in the ring network cabinet from affecting the accuracy of the voltage and current values ​​collected by the data acquisition module.

[0075] S130. After determining that the power storage device is normal at the current time point through the device status analysis module based on the current voltage value and the current current value collected by the data acquisition module at the current time point, obtain the current operation cycle at the current time point, and determine the health status of the power storage device in the current operation cycle based on the current voltage average value and the current current average value in the current operation cycle.

[0076] In this step, specifically, it is possible to determine whether the power storage device is normal at the current time point based on the current voltage value, the voltage upper limit value, the current current value, and the current upper limit value. Alternatively, the target time point corresponding to the current time point, as well as the target voltage value and the target current value of the power storage device at the target time point can be obtained, and whether the power storage device is normal at the current time point can be determined based on the difference between the target voltage value and the current voltage value, and the difference between the target current value and the current current value. If it is determined that the power storage device is normal at the current time point, the current operation cycle in which the current time point is located, and the historical operation cycle corresponding to the current operation cycle are obtained. Afterwards, the historical voltage average value and the historical current average value can be obtained, and the health status of the power storage device in the current operation cycle can be determined based on the difference between the historical voltage average value and the current voltage average value, and the difference between the historical current average value and the current current average value.

[0077] Optionally, after receiving the current voltage value and current current value collected by the data acquisition module at the current time point, and determining that the current operation cycle where the current time point is located is not the initial operation cycle of the power storage device, the previous operation cycle where the voltage value and current value closest to the current operation cycle are located can be obtained. Wherein, each operation cycle contains a set number of time points. Then, the target time point corresponding to the current time point can be obtained in the previous operation cycle, and the target voltage value and target current value collected by the data acquisition module at the target time point can be obtained. If the difference between the target voltage value and the current voltage value is less than the first preset voltage difference, and the difference between the target current value and the current current value is less than the first preset current difference, it is determined that the power storage device is normal at the current time point. If the difference between the target voltage value and the current voltage value is greater than or equal to the first preset voltage difference, or the difference between the target current value and the current current value is greater than or equal to the first preset current difference, it is determined that the power storage device is abnormal at the current time point.

[0078] Optionally, when determining that the power storage device is normal at the current time point, the current voltage average value and the current current average value in the current operation cycle, as well as the previous voltage average value and the previous current average value in the previous operation cycle can be obtained. If the difference between the current voltage average value and the previous voltage average value is less than the second preset voltage difference, and the difference between the current current average value and the previous current average value is less than the second preset current difference, then it is determined whether each time point in the current operation cycle is greater than any time point in the preset operation cycle. If so, the initial voltage average value and the initial current average value corresponding to the initial operation cycle are obtained. If the difference between the current voltage average value and the initial voltage average value is less than the third preset voltage difference, and the difference between the current current average value and the initial current average value is less than the third preset current difference, then it is determined that the power storage device is normal in the current operation cycle. If the difference between the current voltage average value and the initial voltage average value is greater than or equal to the third preset voltage difference, and the difference between the current current average value and the initial current average value is greater than or equal to the third preset current difference, then it is determined that the power storage device is abnormal in the current operation cycle. If not, it is directly output that the power storage device is normal in the current operation cycle.

[0079] Optionally, if the difference between the current voltage average value and the previous voltage average value is greater than or equal to a second preset voltage difference, or the difference between the current current average value and the previous current average value is greater than or equal to a second preset current difference, it is determined that the power storage device is abnormal in the current operating cycle.

[0080] Optionally, the device status analysis module may communicate with the user terminal, for example, sending the health status of the power storage device to the user and receiving the user's operation instructions.

[0081] The technical solution of this embodiment obtains the voltage and current values ​​of the power storage device at different time points through the data acquisition module, and sends the voltage and current values ​​to the equipment status analysis module; through the electromagnetic interference isolation module, when the data acquisition module is working, the power storage device and the data acquisition module are isolated in the electromagnetic interference isolation module to prevent the electromagnetic interference device in the ring network cabinet from affecting the accuracy of the voltage and current values ​​collected by the data acquisition module; through the equipment status analysis module, according to the current voltage and current current values ​​collected by the data acquisition module at the current time point, after determining that the power storage device is normal at the current time point, the current operation cycle at the current time point is obtained, and according to the current voltage average value and current current average value in the current operation cycle, the technical means for determining the health status of the power storage device in the current operation cycle solves the problem that the monitoring efficiency and cost of the power storage device are low due to manual monitoring of the health status of the power storage device, reduces the cost of monitoring the health status of the power storage device, and improves the efficiency and accuracy of determining the health status of the power storage device.

[0082] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0083] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A health status monitoring system for an electric storage device, characterized in that: The system includes: a data acquisition module, an electromagnetic interference isolation module and an equipment status analysis module; Wherein, the equipment status analysis module is connected to the data acquisition module, the data acquisition module is connected to the power storage device, the data acquisition module and the power storage device are arranged inside the electromagnetic interference isolation module, and the electromagnetic interference isolation module and the equipment status analysis module are both arranged inside the ring network cabinet; The data acquisition module is used to obtain the voltage value and current value of the power storage device at different time points, and send the voltage value and current value to the device status analysis module; The electromagnetic interference isolation module is used to isolate the power storage device and the data acquisition module in the electromagnetic interference isolation module when the data acquisition module is working, so as to prevent the electromagnetic interference equipment in the ring network cabinet from affecting the accuracy of the voltage and current values ​​collected by the data acquisition module; The device status analysis module is used to determine that the power storage device is normal at the current time point based on the current voltage value and the current current value collected by the data acquisition module at the current time point, obtain the current operation cycle at the current time point, and determine the health status of the power storage device in the current operation cycle based on the current voltage average value and the current current average value in the current operation cycle.

2. The system according to claim 1, characterized in that The device status analysis module is specifically used for: After receiving the current voltage value and the current current value collected by the data collection module at the current time point, and determining that the current operation cycle at the current time point is not the initial operation cycle of the power storage device, obtain the previous operation cycle in which the voltage value and the current value closest to the collection time point and the current operation cycle are located; Among them, each operation cycle includes a set number of time points; Acquire a target time point corresponding to the current time point in the previous operation cycle, and acquire a target voltage value and a target current value acquired by a data acquisition module at the target time point; If the difference between the target voltage value and the current voltage value is less than the first preset voltage difference, and the difference between the target current value and the current current value is less than the first preset current difference, it is determined that the power storage device is normal at the current time point; If the difference between the target voltage value and the current voltage value is greater than or equal to the first preset voltage difference, or the difference between the target current value and the current current value is greater than or equal to the first preset current difference, it is determined that the power storage device is abnormal at the current time point.

3. The system according to claim 2, characterized in that The device status analysis module is further specifically used for: When it is determined that the power storage device is normal at the current time point, the current voltage average value and the current current average value in the current operation cycle, and the previous voltage average value and the previous current average value in the previous operation cycle are obtained; If the difference between the current voltage average value and the previous voltage average value is less than the second preset voltage difference value, and the difference between the current current average value and the previous current average value is less than the second preset current difference value, then determine whether each time point in the current operation cycle is greater than any time point in the preset operation cycle; If yes, then obtain the initial voltage average value and the initial current average value corresponding to the initial operation cycle, and if the difference between the current voltage average value and the initial voltage average value is less than the third preset voltage difference, and the difference between the current current average value and the initial current average value is less than the third preset current difference, then determine that the power storage device is normal in the current operation cycle; If the difference between the current voltage average value and the initial voltage average value is greater than or equal to a third preset voltage difference value, and the difference between the current current average value and the initial current average value is greater than or equal to a third preset current difference value, it is determined that the power storage device is abnormal in the current operation cycle; If not, it directly outputs that the power storage device is normal in the current operation cycle.

4. The system according to claim 3, characterized in that The device status analysis module is also used for: If the difference between the current voltage average and the previous voltage average is greater than or equal to the second preset voltage difference, or the difference between the current current average and the previous current average is greater than or equal to the second preset current difference, it is determined that the power storage device is abnormal in the current operation cycle.

5. The system according to claim 1, characterized in that The electromagnetic interference isolation module comprises: an isolation cover, a first gear, a driving frame and a second gear; Wherein, the isolation cover is arranged above the power storage device and the data acquisition module, the first gear, the driving frame and the second gear are all arranged at the top of the isolation cover, and the driving frame is arranged between the first gear and the second gear; The sides of the isolation cover are all set to be open, and at least one rotating shaft is set in each opening, each rotating shaft is fixedly connected to a sealing plate, and each rotating shaft is fixedly connected to a first gear set at the top of the isolation cover; The second gear is used to drive the first gear connected to the driving frame to rotate through the driving frame, and drive the rotating shaft connected to the first gear through the first gear, so as to drive the sealing plate connected to the rotating shaft to rotate through the rotating shaft.

6. The system according to claim 5, characterized in that The driving frame includes a first rack, a second rack and at least two connecting rods; Wherein, the two connecting rods are fixedly arranged between the first rack and the second rack, the first rack is meshedly connected with the first gear, and the second rack is meshedly connected with the second gear; The second rack is used to drive the first rack to rotate through the connecting rod.

7. The system according to claim 5, characterized in that The electromagnetic interference isolation module further includes: a third rack; Wherein, a driving frame is arranged between the second gear and the first gear located on the first side of the isolation cover, and between the second gear and the first gear located on the third side of the isolation cover; A third rack is provided between the second gear and the first gear located on the second side of the isolation cover, and between the second gear and the first gear located on the fourth side of the isolation cover; The first side and the third side are opposite sides, and the second side and the fourth side are opposite sides; One side of the third rack is meshed and connected with the second gear, and the other side of the third rack is meshed and connected with the first gear.

8. A method for monitoring the health status of an electric storage device, characterized in that: The method is applied to the health status monitoring system of the power storage device according to any one of claims 1 to 7, and the method comprises: The data acquisition module is used to obtain the voltage and current values ​​of the power storage device at different time points, and the voltage and current values ​​are sent to the device status analysis module; Through the electromagnetic interference isolation module, when the data acquisition module is working, the power storage device and the data acquisition module are isolated in the electromagnetic interference isolation module to prevent the electromagnetic interference device in the ring network cabinet from affecting the accuracy of the voltage and current values ​​collected by the data acquisition module; Through the equipment status analysis module, according to the current voltage value and the current current value collected by the data acquisition module at the current time point, after determining that the energy storage device is normal at the current time point, the current operation cycle of the current time point is obtained, and according to the current voltage average value and the current current average value in the current operation cycle, the health status of the energy storage device in the current operation cycle is determined.

9. The method according to claim 8, characterized in that According to the current voltage value and the current current value acquired by the data acquisition module at the current time point, it is determined that the power storage device is normal at the current time point, including: After receiving the current voltage value and the current current value collected by the data collection module at the current time point, and determining that the current operation cycle at the current time point is not the initial operation cycle of the power storage device, obtain the previous operation cycle in which the voltage value and the current value closest to the collection time point and the current operation cycle are located; Among them, each operation cycle includes a set number of time points; Acquire a target time point corresponding to the current time point in the previous operation cycle, and acquire a target voltage value and a target current value acquired by a data acquisition module at the target time point; If the difference between the target voltage value and the current voltage value is smaller than the first preset voltage difference, and the difference between the target current value and the current current value is smaller than the first preset current difference, it is determined that the power storage device is normal at the current time point.

10. The method according to claim 9, characterized in that According to the current average voltage and current average current in the current operation cycle, the health status of the power storage device in the current operation cycle is determined, including: When it is determined that the power storage device is normal at the current time point, the current voltage average value and the current current average value in the current operation cycle, and the previous voltage average value and the previous current average value in the previous operation cycle are obtained; If the difference between the current voltage average value and the previous voltage average value is less than the second preset voltage difference value, and the difference between the current current average value and the previous current average value is less than the second preset current difference value, then determine whether each time point in the current operation cycle is greater than any time point in the preset operation cycle; If yes, then obtain the initial voltage average value and the initial current average value corresponding to the initial operation cycle, and if the difference between the current voltage average value and the initial voltage average value is less than the third preset voltage difference, and the difference between the current current average value and the initial current average value is less than the third preset current difference, then determine that the power storage device is normal in the current operation cycle; If the difference between the current voltage average value and the initial voltage average value is greater than or equal to a third preset voltage difference value, and the difference between the current current average value and the initial current average value is greater than or equal to a third preset current difference value, it is determined that the power storage device is abnormal in the current operation cycle; If not, it directly outputs that the power storage device is normal in the current operation cycle.

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