Array sensor, water inlet identification system of battery pack, battery pack, electric equipment, water inlet detection method, device, equipment, medium and program product

Abstract

The invention provides an array sensor, a water inflow recognition system of a battery pack, the battery pack, electric equipment, a water inflow detection method, device and equipment, a medium and a program product. The array sensor comprises a wire array and a wrapping film wrapping the wire array, the wire array comprises n wires, the n wires are arranged at intervals in the water inlet detection direction according to the length sequence from long to short, the first wire is the same as the second wire, and the lengths of the second wire to the nth wire are sequentially decreased. N is an integer greater than or equal to 3. Every two adjacent wires correspond to one site of the sealing interface of the sealing structure of the battery pack and are used for detecting the resistance value of the corresponding site. The resistance value is used for determining whether water enters the site or not. The array sensor provided by the invention can accurately and timely identify whether water enters the battery pack.

Description

Technical Field

[0001] This application relates to the technology of water ingress identification, and particularly to an array sensor, a water ingress identification system for a battery pack, a battery pack, an electrical device, a water ingress detection method, device, equipment, medium, and program product. Background Art

[0002] The battery pack is the main power source of electric vehicles and hybrid electric vehicles. Water ingress into the battery pack may cause it to short-circuit, affecting the safety of using the battery pack, and further affecting the safe use of the entire vehicle of electric vehicles and hybrid electric vehicles. Therefore, detecting the water ingress situation of the battery pack is crucial for the safe use of the battery.

[0003] Currently, mainly a sealing waterproof test is carried out on the battery pack before it leaves the factory to ensure that the sealing performance of the battery pack meets the standard and can effectively block external water from entering. However, the above method cannot identify water ingress into the battery pack during the use of the battery pack.

[0004] Therefore, how to identify whether the battery pack is water ingress during the use of the battery pack is an urgent problem to be solved. Summary of the Invention

[0005] This application provides an array sensor, a water ingress identification system for a battery pack, a battery pack, an electrical device, a water ingress detection method, device, equipment, medium, and program product to solve the problem of being able to identify whether the battery pack is water ingress during the use of the battery pack.

[0006] In a first aspect, this application provides an array sensor, which includes: a wire array and a coating covering the wire array;

[0007] The wire array includes n wires, and the n wires are arranged at intervals along the water ingress detection direction in the order of decreasing length. Among them, the first wire and the second wire are the same, and the lengths of the second to the nth wires decrease in sequence; n is an integer greater than or equal to 3;

[0008] Each adjacent pair of wires corresponds to a site of the sealing interface of the sealing structure of the battery pack, and is used to detect the resistance value of the corresponding site; the resistance value is used to determine whether there is water ingress at the site.

[0009] Optionally, the coating is an insulating coating.

[0010] In a second aspect, this application provides a water ingress identification system for a battery pack, which includes: a data analysis device, a collection device, a connector, and an array sensor as described in any item of the first aspect;

[0011] The array sensor is arranged at the sealing interface of the sealing structure of the battery pack;

[0012] The acquisition device forms a resistance detection path between every two adjacent wires of the array sensor through the connector, and is used to acquire the resistance value of the corresponding site of the sealing interface of the battery pack's sealing structure;

[0013] The data analysis device is connected to the acquisition device and is used to determine whether water enters at the site according to the resistance value of the site.

[0014] Optionally, the array sensor is pasted at the sealing interface.

[0015] Optionally, there are multiple array sensors, and different array sensors are arranged at different positions of the sealing interface.

[0016] Optionally, the data analysis device is further used for:

[0017] When it is determined that water enters at the site according to the resistance value corresponding to the site, an alarm message for water ingress is output.

[0018] Optionally, the alarm message for water ingress includes: the time of water ingress and / or the position of water ingress;

[0019] Wherein, the time of water ingress is the acquisition time when the acquisition device acquires the resistance value corresponding to the site, and the position of water ingress is the position where the site is located.

[0020] Optionally, the data analysis device is further used for:

[0021] When it is determined that water enters at the site according to the resistance value corresponding to the site, the amount of water ingress and / or the type of water ingress at the site is determined according to the change of the resistance value corresponding to the site.

[0022] Optionally, the alarm message for water ingress further includes:

[0023] The amount of water ingress and / or the type of water ingress at the site.

[0024] Optionally, the data analysis device is specifically used to determine whether water enters at the site according to the resistance value of the site when the self-check of the array sensor passes.

[0025] Optionally, the data analysis device is further used to determine the self-check result of the array sensor based on the self-check resistance value of the site during the self-check of the array sensor.

[0026] Optionally, the system further includes: switches arranged on each resistance detection path.

[0027] Optionally, the data analysis device is specifically used for:

[0028] During the self-check of the array sensor, control the switches corresponding to each resistance detection path to conduct in sequence, so as to obtain the self-check resistance values of the sites corresponding to each resistance detection path in sequence;

[0029] After the self-check of the array sensor passes, control the switches corresponding to each resistance detection path to conduct continuously, so as to collect the resistance values of the sites corresponding to the sealing interface of the sealing structure of the battery pack.

[0030] Optionally, the data analysis device is further configured to output a self-check alarm message when the self-check result of the array sensor fails.

[0031] Optionally, the data analysis device is further configured to store the water ingress information of the site into the failure database when it is determined that the site is water ingress according to the resistance value corresponding to the site.

[0032] Optionally, the connector is a waterproof connector.

[0033] In a third aspect, the present application provides a battery pack, which includes: a housing with a sealing structure, and an ingress water identification system as described in any one of the second aspects.

[0034] In a fourth aspect, the present application provides an electrical equipment, which includes: the battery pack as described in the third aspect.

[0035] In a fifth aspect, the present application provides a method for detecting water ingress, and the method includes:

[0036] Obtain the resistance value of the site of the sealing interface of the sealing structure of the battery pack;

[0037] Determine whether water enters at the site according to the resistance value of the site.

[0038] In a sixth aspect, the present application provides a device for detecting water ingress, and the device for detecting water ingress includes:

[0039] An obtaining device, configured to obtain the resistance value of the site of the sealing interface of the sealing structure of the battery pack;

[0040] A processing device, configured to determine whether water enters at the site according to the resistance value of the site.

[0041] In a seventh aspect, the present application provides an electronic device, which includes: a processor, and a memory communicatively connected to the processor;

[0042] The memory stores computer-executable instructions;

[0043] The processor executes the computer-executable instructions stored in the memory to implement the method as described in the fifth aspect.

[0044] In an eighth aspect, the present application provides a computer-readable storage medium storing computer-executable instructions, which are used to implement the method described in the fifth aspect when executed by a processor.

[0045] In a ninth aspect, the present application provides a computer program product including a computer program, which implements the method described in the fifth aspect when executed by a processor.

[0046] For the array sensor, the water ingress recognition system for the battery pack, the battery pack, the electrical device, the water ingress detection method, device, equipment, medium, and program product provided by the present application, water usually enters the battery pack through the sealing interface of its sealing structure. Therefore, by arranging a thin array sensor at the sealing interface of the sealing structure of the battery pack, it is possible to achieve water ingress detection during the use of the battery pack without affecting the original sealing performance of the sealing structure. In addition, when water enters the battery pack, even a small amount of water ingress will change the dielectric constant of the environment around the sensor, causing the wires inside the array sensor to conduct and generating a resistance value. Therefore, the array sensor arranged at the sealing interface of the sealing structure of the battery pack can accurately and timely identify whether water has entered the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The drawings here are incorporated into the description and form a part of this description, showing embodiments consistent with the present application, and are used together with the description to explain the principles of the present application.

[0048] Figure 1 FIG. 1 is a schematic structural diagram of an array sensor provided by an embodiment of the present application;

[0049] Figure 2 FIG. 2 is a cross-sectional view of an array sensor provided by an embodiment of the present application with the upper coating removed;

[0050] Figure 3 FIG. 3 is a left view of an array sensor provided by an embodiment of the present application;

[0051] Figure 4 FIG. 4 is a schematic structural diagram of a water ingress recognition system for a battery pack provided by an embodiment of the present application;

[0052] Figure 5 FIG. 5 is a schematic structural diagram of the positional relationship between an array sensor and the sealing interface of the upper and / or lower box bodies of a battery pack provided by an embodiment of the present application;

[0053] Figure 6 FIG. 6 is a top view of the positional relationship between an array sensor and the sealing interface of the upper and / or lower box bodies of a battery pack provided by an embodiment of the present application;

[0054] Figure 7 A water ingress detection method provided in an embodiment of the present application;

[0055] Figure 8 A schematic diagram of the structure of a water inlet detection device provided in an embodiment of the present application;

[0056] Figure 9 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0057] Reference numerals:

[0058] 21-wire array; 22-encapsulation.

[0059] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0060] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0061] The battery pack is the main power source for electric and hybrid vehicles. Water ingress into the battery pack may cause a short circuit, affecting the safety of the battery pack and further affecting the safe use of the entire electric and hybrid vehicle. Therefore, detecting water ingress into the battery pack is crucial to the safety of the battery pack.

[0062] At present, the battery pack is mainly subjected to a sealing and waterproof test before it leaves the factory to ensure that its sealing performance meets the standards. The purpose of this test is to verify whether the sealing structure of the battery pack can effectively prevent external moisture from entering its interior. Only when the battery pack successfully passes the sealing and waterproof test and proves that its sealing performance is qualified will it be put into actual use.

[0063] However, during the use of the battery pack, its performance may gradually deteriorate. For example, the seal may age or be damaged due to long-term use, or the battery pack may be structurally damaged when subjected to external forces such as collision and extrusion. These factors may damage the sealing of the battery pack and cause water to enter during use.

[0064] Currently, there is no dedicated solution for identifying water ingress into the battery pack during its use.

[0065] When water enters the battery pack, it will enter the interior of the battery pack, causing the insulation resistance of the insulating material to drop sharply, thereby triggering insulation failure. Therefore, currently, in some battery pack usage scenarios, whether the battery pack is waterlogged is judged based on the insulation failure of the battery pack.

[0066] However, there are many reasons for the insulation failure of the battery pack, and it is difficult to accurately judge whether it is caused by water ingress, and there is a certain risk of misjudgment. In addition, when water enters the battery pack, when the water inflow reaches a certain level, causing a micro short circuit at the water ingress position, can insulation failure be triggered, resulting in poor timeliness of identification. When the degree of water ingress into the battery pack is already relatively serious, faults will occur at the vehicle level, and it may already be unable to drive, giving the user relatively short reaction time.

[0067] That is, although this method can identify whether there is water ingress during the use of the battery pack, the identification accuracy is poor and the timeliness is poor.

[0068] The sealing interface of the sealing structure of the battery pack refers to the contact area between two or more components that need to be kept sealed in the battery pack. Water ingress into the battery pack usually enters the interior of the battery pack from the sealing interface of the sealing structure of the battery pack.

[0069] In view of this, in this application, an array sensor is provided at the sealing interface of the sealing structure of the battery pack. When water enters the battery pack, even if it is a small amount of water ingress, it will change the dielectric constant of the environment around the sensor, causing the wires inside the array sensor to conduct and generating a resistance value. Therefore, through the array sensor provided at the sealing interface of the sealing structure of the battery pack, it is possible to accurately and timely identify whether water has entered the battery pack.

[0070] The array sensor involved in the embodiments of this application will be described below.

[0071] Figure 1 It is a schematic structural diagram of an array sensor provided in an embodiment of this application. Figure 2 It is a cross-sectional view of an array sensor provided in an embodiment of this application with the upper coating removed. Figure 3 It is a left view of an array sensor provided in an embodiment of this application. Combining Figures 1 - 3 , the array sensor may include: a wire array 21 and a coating 22 covering the wire array 21.

[0072] Among them, as Figure 2 and Figure 3 shown, the wire array 21 includes n wires. n is an integer greater than or equal to 3.

[0073] n wires are arranged at intervals along the water inlet detection direction in the order of decreasing length. Among them, the first wire and the second wire are the same, and the lengths of the second to the nth wires decrease in sequence. That is, the wires in the wire array 21 are parallel to each other, and adjacent wires are arranged at intervals.

[0074] The arranged at intervals means that the wires in the wire array 21 are arranged at a certain spacing. For example, the wires can be arranged at an equal spacing, or they can be arranged at different spacings. The embodiments of the present application do not limit this.

[0075] The lengths of the second to the nth wires decrease in sequence. Each adjacent pair of wires corresponds to a site on the sealing interface of the battery pack's sealing structure, and is used to detect the resistance value of the corresponding site; this resistance value is used to determine whether water enters at the site.

[0076] Exemplarily, as Figure 2 shown, Figure 2 contains 5 wires, among which two wires have the same length, and the lengths of the remaining three wires are different. That is, the array sensor can detect four sites A, B, C, and D on the sealing interface.

[0077] Wire 1 and wire 2 correspond to site A and are used to detect the resistance value of site A.

[0078] Wire 2 and wire 3 correspond to site B and are used to detect the resistance value of site B. Among them, the length difference between wire 2 and wire 3 determines the position interval covered by site A.

[0079] Wire 3 and wire 4 correspond to site C and are used to detect the resistance value of site C. Among them, the length difference between wire 3 and wire 4 determines the position interval covered by site B.

[0080] Wire 4 and wire 5 correspond to site D and are used to detect the resistance value of site D. Among them, the length difference between wire 4 and wire 5 determines the position interval covered by site C. Wire 5 is the wire with the shortest length in the wire array 21. Therefore, the coverage range of wire 5 is the position interval covered by site D.

[0081] It can be seen from the above description that the length of the position interval covered by each site is positively correlated with the length difference between the corresponding pair of wires. That is, the greater the length difference, the greater the position interval.

[0082] As described above, the number of sites of the sealed interface that the array sensor can detect and the size of the position interval covered by a single site are related to the length, number, and spaced arrangement of the wires in the wire array 21. When covering the same length range, for example, when both cover a range of 10 centimeters (cm), the more wires there are and the smaller the length difference between the wires, the more sites can be recognized, the smaller the position interval represented by a single site, and the higher the accuracy of the water inlet position detection.

[0083] In a specific embodiment, taking the length of the sealed interface to be detected as 100 cm and the length difference between adjacent wires being fixed as an example. When there are 5 wires in the wire array 21, it is possible to detect whether water enters at 4 sites of the sealed interface, and the position interval covered by each site is an interval of 20 cm in length. Therefore, the accuracy of the water inlet position of the sealed interface that the array sensor can detect is 20 cm. When there are 50 wires in the wire array 21, it is possible to detect whether water enters at 49 sites of the sealed interface, and the position interval covered by each site interval is 2.04 cm. Therefore, the accuracy of the water inlet position of the sealed interface that we can detect is 2.04 cm.

[0084] The resistance value refers to the resistance value between adjacent wires in the wire array 21 under specific conditions. Exemplarily, when the sealed interface of the sealed structure is not flooded, the adjacent wires in the wire array 21 are in a short-circuit state and no current flows through. At this time, the resistance value between adjacent wires is infinite. When flooding occurs, since water has conductivity, a conduction path will be formed between two adjacent wires in contact with the water, and the resistance between these two wires will change, resulting in a change in the resistance value of the corresponding site. This resistance value can reflect whether water enters at the corresponding site.

[0085] When the wire array 21 includes n wires, there is a resistance value between two adjacent wires when flooding occurs, that is, the wire array 21 can detect at most n - 1 resistance values, and in this implementation, it corresponds to n - 1 sites.

[0086] Assume the water inlet detection direction is Figure 2 the direction from left to right as shown in, then the 1st and 2nd wires can correspond to site A, and the resistance value between the first wire and the second wire can be called the resistance value of site A. Correspondingly, the resistance value between the second wire and the third wire can be called the resistance value of site 2, and so on, to obtain the resistance values of n - 1 sites.

[0087] Taking the resistance value of site A as an example, it should be understood that when water enters at any position between the first wire and the second wire, the resistance value R1 between the first wire and the second wire will change. That is, the resistance value of site A changes. Therefore, it is necessary to further combine the resistance value of site B to determine whether water enters at site A. That is, further combine the R2 resistance value between the second wire and the third wire to determine whether water enters at site A.

[0088] When the R1 resistance value of site A is not the initial value and the resistance value R2 for judging whether water enters at site B is the initial value, it indicates that no water has entered from site B to site n - 1. Then it can be concluded that water has entered at site A. When the resistance value R1 of site A is not the initial value and the resistance value R2 for judging whether water enters at site B is not the initial value, further judgment is made through the resistance value of site C. That is, further combine the R3 resistance value between the third wire and the fourth wire to judge whether water enters at site B. If the resistance value R3 of site C is the initial value, it indicates that water has entered at site B and water may have entered at site A. The water entry situation at site A can be further judged according to the change rate of the resistance value.

[0089] Exemplarily, if the resistance value change occurs at site A first, that is, the resistance value R1 changes, and after a certain time interval, the resistance value change occurs at site B, that is, the resistance value R2 changes, it indicates that water has entered at site A. And as the water spreads, water also enters at site B. If the resistance value of site A changes while the resistance value of site B also changes, that is, R1 changes while R2 also changes, it indicates that only water has entered at site B.

[0090] For example, the water inflow can also be determined based on the resistance value change of the site.

[0091] Exemplarily, the amount of water inflow is related to the resistance value of the detected site. The greater the amount of water inflow, the smaller the resistance value of the water entry position. When a large amount of water enters at site B, the first wire contacts the second wire, and the second wire contacts the third wire. The resistance values R1 and R2 between the wires quickly drop to a lower level. But the resistance values of other sites do not change, then it is judged that the amount of water inflow at the current site B is large. If, in this case, after a certain time interval, the resistance values of other sites, such as R3 and / or R4, change, it indicates that the amount of water inflow at site B is large and the water has spread to other sites. When a small amount of water enters at site B, the first wire contacts the second wire, and the second wire contacts the third wire. The resistance values R1 and R2 between the wires change but remain at a relatively high level, and other sites do not change, then it is judged that the amount of water inflow at site B is small.

[0092] For another example, when the number of sites is fixed, the type of water entry can be determined based on the speed of the resistance value change of a single site.

[0093] Among them, the types of influent water can include, for example, fresh water, salt water with different concentrations, muddy water, etc. The embodiments of the present application do not limit the types of influent water.

[0094] Exemplarily, when the influent water volume at the same site is the same but the types of influent water are different, the resistance value changes corresponding to this site are also different. Take fresh water and salt water as examples of the types of influent water. When water inflow occurs at site B, since the conductivity of salt water is higher. Therefore, when the influent water volume is the same, the resistance value change caused by salt water will be greater than that caused by fresh water, resulting in the resistance value dropping to a lower level.

[0095] Exemplarily, when the influent water volume at the same site is different and the types of influent water are also different, the type of influent water can be judged based on the resistance value changes between different wires at this site. Take fresh water and salt water as examples of the types of influent water. When water inflow occurs at site B, since the conductivity of salt water is higher, even if the influent water volume of salt water is relatively small, it may still cause the resistance R1 change between the first wire and the second wire to be similar to that of a large amount of fresh water. However, due to the different spreading speeds of water, the resistance R2 changes caused by a small amount of salt water and a large amount of fresh water between the second wire and the third wire will be different. Among them, a large amount of fresh water will cause the resistance R2 to decrease significantly. Therefore, by analyzing the resistance value changes between different wires, the types of influent water can be effectively distinguished even when the influent water volumes are different.

[0096] Therefore, as shown in the above embodiments, the water inflow conditions at each site of the sealing interface of the sealing structure can be detected through the resistance value changes of R1 - Rn - 1. The resistance values detected by the array sensor in the embodiments of the present application can not only be used to judge whether water inflow occurs at the corresponding site, but also further detect the type of influent water and / or the influent water volume.

[0097] The above-mentioned coating film 22 is a thin film material used to wrap and protect a part of the surface of the wire array 21. For example, it can be used to provide insulation protection to prevent short - circuits between wires. It can also be used to isolate the wire array 21 from the outside world to avoid damage to the wire array 21. The coating film 22 can be a single - layer thin film material or a multi - layer thin film material, which specifically depends on the application requirements and performance requirements. The embodiments of the present application do not limit this.

[0098] Exemplarily, the above - mentioned coating film 22 can be an insulating coating film 22 to provide insulation protection. This method can reduce the interference to the detected resistance value when the sealing interface is a conductor, and improve the accuracy of the detection results of the array sensor.

[0099] The embodiments of the present application do not limit the type of the insulating coating film 22. For example, it can be any coating film 22 with insulating effects such as polycarbonate film, silicon oxide film, etc.

[0100] Exemplarily, the encapsulation 22 can be disposed on other surfaces other than the side of the wire array 21 for detecting water ingress.

[0101] As described above, when the wire array 21 in the array sensor is not in contact with water, its resistance is infinite, and only when it is in contact with water will the resistance change occur. Therefore, the change in the resistance of the wire array 21 can be used to detect whether water enters the sealing interface of the sealing structure. Therefore, when setting the encapsulation 22 for the array sensor, a channel allowing water to pass through needs to be reserved so that when water enters the sealing interface of the sealing structure, each wire in the wire array 21 can detect the water ingress situation at the corresponding site.

[0102] Continuing to refer to Figure 3 , still taking the water ingress detection direction as Figure 3 the left-to-right direction shown as an example, a specific implementation manner, for example, a certain channel can be reserved on the left side of the wire array 21 in Figure 3 so that when water enters from the left, the water can flow through the array sensor, and the wires in the wire array 21 at the corresponding water ingress sites can all come into contact with the water. A certain channel is reserved on the right side of the wire array 21 to prevent air pressure from being generated inside the array sensor, thereby ensuring that water can smoothly enter from the left. As for the other sides of the wire array 21, the encapsulation 22 can be provided. This setting method enables the array sensor to achieve insulation protection on the basis of detecting water ingress at the corresponding sites of the sealing structure of the sealing interface.

[0103] As described above, the array sensor includes a wire array 21 and an encapsulation 22. Among them, the thicknesses of the wire array 21 and the encapsulation 22 are relatively thin, so the thickness of the array sensor is also relatively thin. Therefore, in some embodiments, the array sensor can also be referred to as an ultra-thin array sensor.

[0104] The above-described array sensor only exemplarily gives an implementation manner of an array sensor, and appropriate deformations can also be made on the basis of the above-described array sensor, for example, adding other functional components or adjusting the structural design, etc., so that it supports more functions, etc., and no limitation is made thereto.

[0105] It should be noted that the sealing structure itself has a sealing function, and its sealing interface should be able to achieve effective sealing. Since the thickness of the array sensor provided in the present application is relatively thin, when it is installed on the sealing interface of the sealing structure, the influence on the sealing performance of the sealing interface can be ignored. Therefore, the array sensor can detect water ingress without affecting the original sealing performance of the sealing structure.

[0106] The array sensor provided by this application includes: a wire array and a coating film covering the wire array. Each adjacent pair of wires corresponds to a site on the sealing interface of the sealing structure of the battery pack, and is used to detect the resistance value of the corresponding site, and determine whether water enters at the corresponding site based on the change in the resistance value. This sensor can detect the water ingress situation of the sealing interface of the sealing structure based on the change in the resistance value of the corresponding site, such as whether water enters the sealing interface, the water ingress time, the water ingress position, and the water ingress volume.

[0107] In view of this, based on the above array sensor, an embodiment of this application further provides a water ingress recognition system for a battery pack.

[0108] Figure 4 As shown in the structural schematic diagram of a water ingress recognition system for a battery pack provided by an embodiment of this application, Figure 4 as shown, the water ingress recognition system for a battery pack includes: a data analysis device, a collection device, a connector, and an array sensor.

[0109] Among them, the array sensor is arranged at the sealing interface of the housing of the sealing structure of the battery pack.

[0110] The sealing interface of the housing of the above sealing structure refers to the contact area between two or more components that need to be kept sealed. In a battery pack, the sealing interface can include, for example, the connection interface between the upper box body and the lower box body, or any other contact area between two or more components that need to be kept sealed.

[0111] Next, an example will be given to illustrate the positional relationship between the array sensor and the sealing interface of the upper and lower box bodies of the battery pack.

[0112] Figure 5 As shown in the structural schematic diagram of the positional relationship between an array sensor and the sealing interface of the upper and / or lower box bodies of a battery pack provided by an embodiment of this application. Figure 6 As shown in the top view of the positional relationship between an array sensor and the sealing interface of the upper and / or lower box bodies of a battery pack provided by an embodiment of this application ( Figure 6 is Figure 5 the top view of).

[0113] Exemplarily, as Figure 5 shown by the array sensor 1 in, the array sensor can, for example, be directly pasted on the sealing interface of the upper and / or lower box bodies. As Figure 5 shown by the array sensor 2 in, the array sensor can also, for example, be closely attached to the edge of the sealing interface and be pasted on the inner surface of the upper and / or lower box bodies along the vertical direction of the sealing interface.

[0114] In this implementation manner, exemplarily, as Figure 3As shown, for example, an adhesive can be pasted on the encapsulation 22 on the upper side and / or the lower side of the array sensor for pasting at the sealing interface of the upper box body and / or the lower box body.

[0115] Exemplarily, the number, position of the array sensors provided for the sealing interface of a sealing structure, and the length and number of the wires in the wire array 21 in the array sensors can be set according to the actual water ingress detection requirements.

[0116] For example, an array sensor can be provided at the sealing interface. The array sensor surrounds the sealing interface in a circle. The wire length, the number of wires, and the arrangement mode in the array sensor are set based on the structural features at the sealing interface. When water enters at any site of the sealing interface, the array sensor can detect it in time.

[0117] For another example, multiple array sensors can be provided at the sealing interface. The number and the arrangement features of the array sensors are set based on the structural features at the sealing interface. Different array sensors are arranged at different positions of the sealing interface to achieve more precise water ingress detection.

[0118] The embodiments of the present application do not limit the number and the setting mode of the array sensors, and can be specifically set according to the product form of the battery pack sealing structure.

[0119] The present application realizes the detection of the water ingress situation at the sealing interface of the battery pack by providing array sensors at the sealing interface of the sealing structure of the battery pack. And according to the structure of the battery pack sealing interface, the number and the installation mode of the array sensors are adaptively adjusted, so that the water ingress situation of the battery pack can be detected more accurately.

[0120] The acquisition device is connected to the array sensors provided on the battery through connectors for acquiring the resistance values at the corresponding sites.

[0121] Exemplarily, the acquisition device can also save the acquired resistance values and the acquisition time corresponding to the resistance values.

[0122] A connector is an electronic component for realizing signal transmission. Exemplarily, the wire array 21 in the array sensors can be directly welded to the pins of the connector according to the arrangement order of the wires through micro-welding technology. The wire array 21 can also be fixed on the terminals of the connector through a special crimping tool. The wire array 21 can also be bonded to the connector using conductive adhesive. The embodiments of the present application do not limit the connection mode between the connector and the array sensors.

[0123] Exemplarily, the connector can be connected to the acquisition device using a standardized connector, or can be designed as a pluggable connector to connect to the acquisition device. A connector with a threaded connector can also be used, and the connection between the connector and the acquisition device is achieved by tightening the thread. The embodiments of the present application do not limit the connection method between the connector and the acquisition device.

[0124] Among them, the connector can be, for example, a waterproof connector. Therefore, waterproofing the connector can prevent the connector from short-circuiting between the conductive terminals and causing insulation failure due to water ingress when the acquisition device collects the resistance values of the array sensors through the connector, thereby ensuring accurate collection of the resistance values at the site points and preventing missed collection.

[0125] As shown above, when water enters, a conduction path is formed between every two wires in the wire array 21, resulting in a change in the resistance value of the corresponding site. Therefore, the acquisition device can collect and record the change in the resistance value of the site corresponding to the sealing interface. To ensure that the acquisition device can accurately collect and record the resistance values of each site.

[0126] Optionally, in some embodiments, the array sensor, the connector, and the acquisition device can be connected in the following manner.

[0127] Exemplarily, the wire array 21 in the array sensor is connected to the connector in the order of wire arrangement. The acquisition device can, for example, adopt a multi-channel design. The number of its channels is set according to the number of wires in the array sensor to ensure that each channel can independently collect the corresponding resistance value. The connector is then connected to the acquisition device in sequence according to the channel characteristics of the acquisition device, thereby achieving accurate collection of the resistance value of each wire.

[0128] The above data analysis device is connected to the acquisition device and is used to determine whether water enters at the site according to the resistance value of the site. That is, the data analysis device can obtain the resistance value of the site of the sealing interface of the battery pack's sealing structure and determine whether water enters at the site according to the resistance value of the site.

[0129] The embodiments of the present application do not limit the connection method between the data analysis device and the acquisition device. The data analysis device can be, for example, the data analysis device of the battery pack itself, or a device with data analysis capabilities in the electrical equipment to which the battery pack belongs, or the server corresponding to the battery pack. The server mentioned here can be a system or platform that can detect the water ingress situation of the battery pack. For example, a battery pack water ingress identification platform, etc. The server can be deployed in the cloud and obtain the resistance values of each site of the battery pack by remotely communicating with the acquisition device, thereby detecting the water ingress situation of the battery pack and realizing the detection of battery pack water ingress.

[0130] Next, an explanation will be given on how the data analysis device determines whether water has entered at the site based on the resistance value of the site. That is, an explanation will be given on how the data analysis device realizes water ingress detection.

[0131] Exemplarily, the acquisition device obtains the resistance values of different sites of the battery pack sealing structure sealing interface, that is, R1 - Rn-1. Regarding how the data analysis device analyzes the water ingress situation at the corresponding site based on the resistance change of the wire array 21, reference can be made to the foregoing description of confirming the water ingress situation at the site based on the resistance change. Details will not be elaborated here.

[0132] Exemplarily, as shown above, when the resistance values of R1 - R3 change while the resistance value of R4 remains unchanged, it is determined that water has entered at site C.

[0133] Further, when it is determined that water has entered at the site based on the resistance value corresponding to the site, an water ingress alarm message is output. The alarm message is used to remind that water has entered the battery pack.

[0134] Exemplarily, the alarm message may include, for example, the water ingress time and / or the water ingress position.

[0135] Among them, the water ingress time is the acquisition time when the acquisition device records the resistance value corresponding to the site, and the water ingress position is the position where the site is located.

[0136] Exemplarily, the data analysis device is further configured to determine the water ingress volume and / or the water ingress type at the site when it is determined that water has entered at the site based on the resistance value corresponding to the site.

[0137] Among them, the judgment principle of the water ingress volume and / or the water ingress type is as shown above, and details will not be elaborated here.

[0138] Exemplarily, the data analysis device can train the battery pack water ingress situation detection model based on the water ingress data. In subsequent water ingress detection, by inputting the resistance value situation of the wire array 21, the battery pack water ingress situation detection model outputs to determine the water ingress time, the water ingress position, the water ingress volume, and the water ingress type. The data analysis module can also establish a mapping relationship between the change in the resistance value corresponding to the site, the water ingress volume at the site, and the water ingress type. In subsequent water ingress detection, the water ingress volume and / or the water ingress type at the site are determined from this mapping relationship. This mapping relationship can exist in the form of a table or can be represented by a model that has learned this mapping relationship. The embodiments of the present application do not limit the analysis method of the data analysis device.

[0139] The above water ingress alarm message may further include the water ingress volume and / or the water ingress type at the site.

[0140] Among them, for the output of the alarm information, for example, the alarm information can be broadcast by voice, or the alarm information can also be fed back by the color, or brightness, or indicator light displayed by the sound and light device, or the alarm information can also be output. The embodiments of the present application do not limit the form of the alarm information. The alarm output device can be in the water ingress identification system of the battery pack or a device independent of the water ingress identification system of the battery pack. For example, it can be a device on the electrical equipment where the battery pack is located, etc.

[0141] Exemplarily, the data analysis device is specifically configured to determine whether there is water ingress at a site according to the resistance value of the site when the array sensor passes the self-check.

[0142] Among them, the self-check of the array sensor refers to detecting the working state and performance of the array sensor to ensure its normal operation and the accuracy of the data, so as to ensure the accuracy of subsequent water ingress identification.

[0143] Exemplarily, as Figure 4 shown, the water ingress identification system further includes a switch provided on each resistance detection path. For each wire in the wire array 21, the acquisition device forms a resistance detection path with every two adjacent wires in the array sensor through a connector.

[0144] Exemplarily, as shown above, the acquisition device can adopt a multi-channel design, so each channel of the acquisition device can correspond to the switch corresponding to each site.

[0145] For example, during the self-check of the array sensor, the switches corresponding to each resistance detection path are controlled to conduct in sequence to obtain the self-check resistance values of the sites corresponding to each resistance detection path in sequence.

[0146] Exemplarily, the data analysis device obtains the self-check resistance values of the sites corresponding to each resistance detection path during the self-check of the array sensor through the acquisition device, and determines the self-check result of the array sensor based on the self-check resistance values of the sites.

[0147] As Figure 4As shown, for example, switch K1 controls the resistance detection path between wire 1 and wire 2, switch K2 controls the resistance detection path between wire 2 and wire 3, switch K3 controls the resistance detection path between wire 3 and wire 4, and switch K4 controls the resistance detection path between wire 4 and wire 5. When detecting whether the resistance detection path between wire 1 and wire 2 is normal, close switch K1 and open switches K2 - K4. As described above, when there is no water ingress at the sealing interface of the battery pack, wire 1 and wire 2 cannot conduct, and at this time, the resistance value of R1 should be infinite. When there is an abnormality, the resistance value is not infinite. Therefore, the normality of the resistance detection path between wire 1 and wire 2 can be determined by the resistance value of R1. The detection methods for other wires are the same as above and will not be elaborated here.

[0148] When one or more resistance detection paths are abnormal, it is determined that the self - test result is a failed self - test. When all resistance detection paths are normal, it is determined that the self - test result is a passed self - test.

[0149] It should be understood that the above self - test can be an operation performed each time the electrical device where the battery pack is located is powered on, or an operation performed during the initial power - on, or an operation performed periodically, etc., and is not limited thereto.

[0150] Exemplarily, after the array sensor passes the self - test, control the switches corresponding to each resistance detection path to conduct continuously, that is, close all switches, so as to collect the resistance values of the corresponding sites of the sealing interface of the sealing structure of the battery pack during the use of the battery pack.

[0151] In this implementation manner, the data analysis device is further configured to output a self - test alarm message when the self - test result of the array sensor fails.

[0152] The above self - test alarm message may include, for example, the path information of the problems occurring in the array sensor.

[0153] It should be noted that the above embodiments are only one implementation manner of the self - test of the array sensor. The embodiments of the present application do not limit the self - test method of the array sensor, and any method capable of realizing the self - test of the array sensor is acceptable.

[0154] Optionally, the water ingress identification system of the battery pack may further include a failure database for storing relevant information about water ingress, such as water ingress location, water ingress time, water ingress volume, and water ingress type, etc.

[0155] Exemplarily, when the data analysis device identifies the water inlet site, it can store the water inlet information of the site, such as the water inlet site, the water inlet time, the water inlet volume, and the water inlet type, into the failure database. Subsequently, maintenance personnel can use the information in the failure database to diagnose and repair the battery pack. This method helps to more quickly and accurately identify the problem, thereby improving the repair efficiency.

[0156] In specific implementation, the above water inlet recognition system of the battery pack can be integrated into the Battery Management System (BMS). That is, in this implementation manner, by adding the aforementioned acquisition device, connector, and array sensor to the BMS, and using the data analysis device in the BMS for water inlet detection, the BMS can implement the water inlet recognition function provided in the embodiments of the present application. In this implementation manner, the data analysis device can be, for example, the Microcontroller Unit (MCU) of the BMS.

[0157] The water inlet recognition system of the battery pack provided in the embodiments of the present application can timely detect whether the sealing interface of its sealing structure is leaking water, the water inlet volume, the water inlet type, the water inlet time, and / or the water inlet position during use, and can send an alarm message when the battery system is leaking water, reminding the user that the battery system is leaking water, enabling the user to handle it in time, giving the user sufficient reaction time, thereby preventing the failure of the battery system caused by untimely handling, and significantly improving the user experience. At the same time, a battery system failure database can be established based on the resistance data saved by the acquisition device, reducing the after-sales cost.

[0158] The embodiments of the present application also provide a vehicle, which includes: the aforementioned battery system, which can use the battery system mentioned in the foregoing embodiments to detect the water inlet situation of the vehicle battery pack, and details are not described herein again.

[0159] Figure 7 This is a water inlet detection method provided in the embodiments of the present application. As Figure 7 shown, taking the execution subject of the method embodiment as the data analysis device as an example, the method may include the following steps:

[0160] S701. Obtain the resistance value of the site of the sealing interface of the sealing structure of the battery pack.

[0161] Exemplarily, the acquisition device obtains the resistance values R1 - Rn-1 of different sites of the sealing interface of the sealing structure of the battery pack, and the data analysis device obtains the resistance value of the site of the sealing interface of the sealing structure of the battery pack in the acquisition device.

[0162] S702. Determine whether water enters at the site according to the resistance value of the site.

[0163] Exemplarily, the data analysis device determines whether water ingress has occurred at a site by comparing the change in the initial resistance value with the current resistance value.

[0164] Regarding how the data analysis device analyzes the water ingress situation of a corresponding site based on the resistance of the site, reference can be made to the foregoing description of determining the water ingress situation of a site based on the resistance value, which will not be elaborated here.

[0165] Optionally, the data analysis device may also output a water ingress alarm message when it determines that water has entered the site based on the resistance value corresponding to the site.

[0166] For example, the water ingress alarm message includes: the water ingress time and / or the water ingress location; wherein, the water ingress time is the acquisition time when the acquisition device acquires the resistance value corresponding to this site, and the water ingress location is the location where the site is located.

[0167] Optionally, the data analysis device may also determine the water ingress volume and / or the water ingress type of the site according to the change in the resistance value corresponding to the site when it determines that water has entered the site based on the resistance value corresponding to the site. In this example, the water ingress alarm message may also include the water ingress volume and / or the water ingress type of the site.

[0168] Optionally, the data analysis device may determine whether water has entered the site according to the resistance value of the site when the self-check of the array sensor passes.

[0169] Optionally, the data analysis device may also determine the self-check result of the array sensor based on the self-check resistance value of the site during the self-check of the array sensor.

[0170] For example, during the self-check of the array sensor, the data analysis device controls the switches corresponding to each resistance detection path to conduct sequentially to sequentially obtain the self-check resistance values of the sites corresponding to each resistance detection path, and determines the self-check result of the array sensor based on the self-check resistance values of the sites.

[0171] For example, after the self-check of the array sensor passes, the data analysis device controls the switches corresponding to each resistance detection path to conduct continuously to determine whether water has entered the site based on the resistance values of the sites corresponding to the sealing interfaces of the sealing structure of the battery pack collected.

[0172] Optionally, the data analysis device may also output a self-check alarm message when the self-check result of the array sensor fails.

[0173] Optionally, the data analysis device may also store the water ingress information of the site in the failure database when it determines that water has entered the site based on the resistance value corresponding to the site.

[0174] The water inlet detection method provided by this application detects the water inlet situation by obtaining the resistance values of the array sensors, and can realize the prediction of the water inlet volume, water inlet type of the battery pack, and the accurate positioning of the water inlet point.

[0175] Figure 8 It is a schematic structural diagram of a water inlet detection device provided by an embodiment of this application, as Figure 8 shown. The device includes: an acquisition module 801 and a processing module 802.

[0176] The acquisition module 801 is used to obtain the resistance value of the site of the sealing interface of the sealing structure of the battery pack.

[0177] The processing module 802 is used to determine whether water enters at the site according to the resistance value of the site.

[0178] Optionally, the processing module 802 is further used to output a water inlet alarm message when it is determined that water enters at the site according to the resistance value corresponding to the site.

[0179] For example, the water inlet alarm message includes: the water inlet time and / or the water inlet position; wherein, the water inlet time is the acquisition time when the acquisition device acquires the resistance value corresponding to this site, and the water inlet position is the position where this site is located.

[0180] Optionally, the processing module 802 is further used to determine the water inlet volume and / or water inlet type of the site according to the change of the resistance value corresponding to the site when it is determined that water enters at the site according to the resistance value corresponding to the site. In this example, the water inlet alarm message may further include the water inlet volume and / or water inlet type of the site.

[0181] Optionally, the processing module 802 is specifically used to determine whether water enters at the site according to the resistance value of the site when the array sensor passes the self-check.

[0182] Optionally, the processing module 802 is further used to determine the self-check result of the array sensor based on the self-check resistance value of the site during the self-check of the array sensor.

[0183] For example, the processing module 802 is specifically used to control the switches corresponding to each resistance detection path to conduct in sequence during the self-check of the array sensor, so as to sequentially obtain the self-check resistance values of the sites corresponding to each resistance detection path, and determine the self-check result of the array sensor based on the self-check resistance values of the sites.

[0184] For example, the processing module 802 is specifically configured to, after the self-check of the array sensor passes, control the switches corresponding to each resistance detection path to continuously conduct, so as to determine whether water enters the site based on the resistance value of the corresponding site of the sealing interface of the battery pack's sealing structure collected.

[0185] Optionally, the processing module 802 is further configured to output a self-check alarm message when the self-check result of the array sensor fails.

[0186] Optionally, the processing module 802 is further configured to store the water ingress information of the site in the failure database when it is determined that water enters the site according to the resistance value corresponding to the site.

[0187] The water ingress detection device provided by the embodiments of the present application can be used to execute the foregoing water ingress detection method. The implementation principle, process, and beneficial effects can be referred to the foregoing embodiments, and will not be elaborated here.

[0188] Figure 9 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As Figure 9 shown, the electronic device 900 may include: a memory 901 and a processor 902. Optionally, the electronic device may further include a transceiver 903. Among them, the memory 901 and the processor 902 communicate; exemplarily, the memory 901, the processor 902, and the transceiver 903 may communicate through a communication bus 906. The memory 901 is used to store a computer program, and the processor 902 executes the computer program to implement the method of the foregoing embodiments.

[0189] Optionally, the foregoing processor may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), etc. The general-purpose processor may be a microprocessor, or the processor may also be any conventional processor, etc. The steps in the method embodiments disclosed in conjunction with the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

[0190] The embodiments of the present application further provide a battery pack, which includes: a housing having a sealing structure, and the water ingress identification system mentioned above. The water ingress identification system may be, for example, a battery management system. The method mentioned in the foregoing embodiments can be used to detect the water ingress situation of the battery pack, and will not be elaborated here.

[0191] The embodiments of the present application also provide an electrical device, which includes the battery pack mentioned above. The method for detecting the water ingress situation of the battery pack mentioned in the foregoing embodiments can be adopted, and details will not be elaborated here. The electrical device can be, for example, an electric vehicle.

[0192] The embodiments of the present application also provide a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, the above-mentioned water ingress detection method is implemented.

[0193] The embodiments of the present application also provide a computer program product, including a computer program. When the computer program is executed by a processor, the above-mentioned water ingress detection method is implemented.

[0194] All or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a readable memory. When the program is executed, it executes the steps including the above method embodiments; and the foregoing memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid-state drive, magnetic tape, floppy disk, optical disc, and any combination thereof.

[0195] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, and the combination of processes and / or blocks in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processing unit of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing devices generate for implementing in the process Figure 1 one process or multiple processes and / or blocks Figure 1 a device for the function specified in one block or multiple blocks.

[0196] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured product including an instruction device, and the instruction device implements in the process Figure 1 one process or multiple processes and / or blocks Figure 1 a device for the function specified in one block or multiple blocks.

[0197] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are executed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions for implementing the functions specified in one process or a plurality of processes and / or blocks Figure 1 in one block or a plurality of blocks Figure 1 in the steps of the block or blocks.

[0198] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

[0199] Other embodiments of the present application will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0200] It should be understood that the present application is not limited to the exact construction described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. An array sensor, characterized in that: The array sensor comprises: a wire array and a coating covering the wire array; The wire array comprises n wires, and the n wires are arranged in order of length from long to short along the water ingress detection direction, wherein the first wire and the second wire are the same, and the lengths of the second to nth wires decrease in sequence; n is an integer greater than or equal to 3; Every two adjacent wires correspond to a location on the sealing interface of the sealing structure of the battery pack, and are used to detect the resistance value of the corresponding location; the resistance value is used to determine whether water has entered the location.

2. The array sensor according to claim 1, characterized in that: The envelope is an insulating envelope.

3. A water ingress identification system for a battery pack, characterized in that: The water inlet identification system comprises: a data analysis device, a collection device, a connector, and an array sensor as described in any one of claims 1-2; The array sensor is arranged at the sealing interface of the sealing structure of the battery pack; The acquisition device forms a resistance detection path through the connector and between every two adjacent wires in the array sensor, and is used to acquire the resistance value of the corresponding position of the sealing interface of the sealing structure of the battery pack; The data analysis device is connected to the acquisition device and is used to determine whether water has entered the site according to the resistance value of the site.

4. The system according to claim 3, characterized in that The array sensor is adhered to the sealing interface.

5. The system according to claim 3, characterized in that There are multiple array sensors, and different array sensors are arranged at different positions of the sealing interface.

6. The system according to claim 3, characterized in that The data analysis device is further used for: When it is determined that water has entered the site according to the resistance value corresponding to the site, water ingress alarm information is output.

7. The system according to claim 6, characterized in that The water inflow alarm information includes: water inflow time and / or water inflow position; The water inlet time is the time when the collection device collects the resistance value corresponding to the site, and the water inlet position is the location of the site.

8. The system according to claim 7, characterized in that The data analysis device is further used for: In the case where water ingress is determined based on the resistance value corresponding to the site, the amount and / or type of water ingress at the site is determined based on a change in the resistance value corresponding to the site.

9. The system according to claim 8, characterized in that The water inlet alarm information also includes: The amount and / or type of water inflow to the site.

10. The system according to claim 3, characterized in that The data analysis device is specifically used to determine whether water has entered the site according to the resistance value of the site when the array sensor passes the self-test.

11. The system according to claim 10, characterized in that The data analysis device is also used to determine the self-test result of the array sensor based on the self-test resistance value of the site during the self-test of the array sensor.

12. The system according to claim 11, characterized in that The system further includes: a switch disposed on each resistance detection path.

13. The system according to claim 12, characterized in that The data analysis device is specifically used for: During the self-test of the array sensor, the switches corresponding to each resistance detection path are controlled to be turned on in sequence, so as to obtain the self-test resistance value of each point corresponding to the resistance detection path in sequence; After the array sensor passes the self-test, the switch corresponding to each resistance detection path is controlled to be continuously turned on to collect the resistance value of the corresponding position of the sealing interface of the sealing structure of the battery pack.

14. The system according to claim 11, characterized in that The data analysis device is also used to output self-test alarm information when the self-test result of the array sensor is failed.

15. The system according to claim 3, characterized in that The data analysis device is further used to store water ingress information of the site in a failure database when it is determined that water has ingressed the site based on the resistance value corresponding to the site.

16. The system according to claim 3, characterized in that The connector is a waterproof connector.

17. A battery pack, characterized in that: The battery pack includes: a shell with a sealing structure, and a water ingress identification system as described in any one of claims 3-16.

18. An electrical equipment, characterized in that: The electrical device comprises: a battery pack as claimed in claim 17.

19. A water ingress detection method, characterized in that: The method comprises: Obtaining the resistance value of a site of a sealing interface of a sealing structure of a battery pack; Whether water has entered the site is determined based on the resistance value of the site.

20. A water ingress detection device, characterized in that: The water inlet detection device comprises: An acquisition device, used to acquire the resistance value of a site of a sealing interface of a sealing structure of a battery pack; The processing device is used to determine whether water has entered the site according to the resistance value of the site.

21. An electronic device, characterized in that: The electronic device comprises: a processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method as claimed in claim 19.

22. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method as claimed in claim 19 when executed by a processor.

23. A computer program product, characterized in that The invention comprises a computer program which, when executed by a processor, implements the method as claimed in claim 19.

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