Battery, electric device, ingress detection method, storage medium and program product

Abstract

Embodiments of the present application relate to the technical field of batteries, and provide a battery, an electric device, an ingress detection method, a storage medium and a program product. The battery comprises: a sealing member; and a liquid ingress detection module configured to detect whether liquid ingress has occurred at the sealing member, and when it is determined that liquid ingress has occurred at the sealing member, sending a liquid ingress detection result to a target system.

Description

Battery, power consuming device, leakage detection method, storage medium and program product Cross-reference to related applications

[0001] The present disclosure is based on and claims priority to the application with CN application number 202411125944.1 and filing date of August 16, 2024, the disclosure of which is hereby incorporated by reference in its entirety into the present disclosure. TECHNICAL FIELD

[0002] The present application relates to the technical field of batteries, and in particular to a battery, a power consuming device, a leakage detection method, a storage medium and a program product. BACKGROUND

[0003] A battery is installed in a power consuming device such as an electric vehicle. During operation of the power consuming device, the battery can come into contact with water or other liquids. If water or other liquids enter the battery case, the battery cells in the case can short circuit, catch fire, or even explode. To seal the gap at the connection between the case and the case cover, a sealing gasket or other sealing member can be installed at the connection between the case and the case cover to prevent water or other liquids from entering the battery case. However, during use of the battery, the battery can be subjected to different impacts, causing the sealing member to fail. Currently, a water leakage detection rope is often used for liquid leakage detection. Two parallel water leakage detection ropes are arranged around the case in the case of the battery and below the sealing member. The two water leakage detection ropes are attached to the case wall by adhesive and are powered on. A controller detects the current of a detection loop formed by the two water leakage detection ropes. When water or other liquids between the two water leakage detection ropes act as a conductor, the controller detects a large change in the current of the detection loop, determines that the sealing member has leaked liquid, and issues an alarm. However, the temperature in the case of the battery changes greatly, which can cause cooling water to form on the case wall. When the cooling water is located between the two water leakage detection ropes, the controller can issue a false alarm, reducing the accuracy of liquid leakage detection. SUMMARY

[0004] The present disclosure provides a battery, a power consuming device, a leakage detection method, a storage medium and a program product in view of the above problems.

[0005] In some embodiments, according to a first aspect of the present disclosure, a battery is provided, comprising: a sealing member; a liquid leakage detection module configured to detect whether a sealing surface of the sealing member has leaked liquid, and send a liquid leakage detection result to a target system if it is determined that the sealing surface has leaked liquid.

[0006] The battery provided in the embodiments of the present application can detect whether liquid leakage occurs on the sealing surface of the sealing member through the liquid leakage detection module, so that the battery has the capability of liquid leakage detection, can detect whether liquid leakage occurs on the sealing position of the sealing member, avoids false alarm caused by condensed water and the like, and improves the accuracy of liquid leakage detection; and the liquid leakage detection result can be sent to the target system, so that the liquid leakage detection of the sealing member can be monitored.

[0007] In some embodiments, the liquid leakage detection module comprises: a detection circuit unit installed on the sealing surface of the sealing member; a controller electrically connected with the detection circuit unit, configured to collect an electrical parameter of the detection circuit unit, determine whether liquid leakage occurs on the sealing surface based on the electrical parameter, and generate the liquid leakage detection result and send the liquid leakage detection result to the target system in the case of determining that liquid leakage occurs on the sealing surface.

[0008] The battery provided in the embodiments of the present application can detect whether liquid leakage occurs on the sealing surface of the sealing member through the liquid leakage detection module, so that the battery has the capability of liquid leakage detection, can detect whether liquid leakage occurs on the sealing position of the sealing member, avoids false alarm caused by condensed water and the like, and improves the accuracy of liquid leakage detection; and the liquid leakage detection result can be sent to the target system, so that the liquid leakage detection of the sealing member can be monitored.

[0009] In some embodiments, the detection circuit unit comprises at least one detection line, each detection line comprising a detection wire and an induction wire, a first end of the detection wire and a first end of the induction wire being connected, and a second end of the detection wire and a second end of the induction wire being connected with the controller respectively; and the controller is configured to determine whether liquid leakage occurs on the sealing surface based on an electrical parameter of the at least one detection line.

[0010] The battery provided in the embodiments of the present application can detect whether liquid leakage occurs on the sealing surface of the sealing member through the liquid leakage detection module, so that the battery has the capability of liquid leakage detection, can detect whether liquid leakage occurs on the sealing position of the sealing member, avoids false alarm caused by condensed water and the like, and improves the accuracy of liquid leakage detection; and the liquid leakage detection result can be sent to the target system, so that the liquid leakage detection of the sealing member can be monitored.

[0011] In some embodiments, the resistance value per unit length of the induction wire is a constant value.

[0012] The battery provided in the embodiments of the present application can detect whether liquid leakage occurs on the sealing surface of the sealing member through the liquid leakage detection module, so that the battery has the capability of liquid leakage detection, can detect whether liquid leakage occurs on the sealing position of the sealing member, avoids false alarm caused by condensed water and the like, and improves the accuracy of liquid leakage detection; and the liquid leakage detection result can be sent to the target system, so that the liquid leakage detection of the sealing member can be monitored.

[0013] In some embodiments, the number of the detection lines is two; and the two detection lines are installed on the sealing surface, wherein the induction wires of the two detection lines are adjacently arranged.

[0014] The battery provided in the embodiment of the present application can detect whether liquid leakage occurs on the sealing surface and can locate the leakage point by installing two detection circuits on the sealing surface, thereby providing an accurate leakage location result.

[0015] In some embodiments, the liquid leakage detection result comprises first liquid leakage warning information; and the controller is configured to determine that liquid leakage occurs on the sealing surface when the current value of one of the two detection circuits is greater than the current threshold value, generate the first liquid leakage warning information, and send the first liquid leakage warning information to the target system.

[0016] The battery provided in the embodiment of the present application can detect whether liquid leakage occurs on the sealing surface and can locate the leakage point by installing two detection circuits on the sealing surface, thereby providing an accurate leakage location result.

[0017] In some embodiments, the liquid leakage detection result comprises second liquid leakage warning information; and the controller is configured to generate the second liquid leakage warning information and send the second liquid leakage warning information to the target system when the first liquid leakage warning information is sent and the sensing lines of the two detection circuits are turned on.

[0018] The battery provided in the embodiment of the present application can detect whether liquid leakage occurs on the sealing surface and can locate the leakage point by installing two detection circuits on the sealing surface, thereby providing an accurate leakage location result.

[0019] In some embodiments, the controller is configured to determine the location information of the liquid leakage point based on the voltage between the second ends of the sensing lines of the two detection circuits, the voltage between the second ends of the detection lines of the two detection circuits, and the length of the sensing lines, and generate the second liquid leakage warning information based on the location information.

[0020] The battery provided in the embodiment of the present application can detect whether liquid leakage occurs on the sealing surface and can locate the leakage point by installing two detection circuits on the sealing surface, thereby providing an accurate leakage location result.

[0021] In some embodiments, the sealing surface comprises adjacent first and second sealing areas, the height of the first sealing area is higher than the height of the second sealing area, and the detection circuit unit is installed in the second sealing area.

[0022] The battery described in the embodiments of the present application includes a first sealing area and a second sealing area in a stepped shape, which can guide liquid from the first sealing area with a higher height to the second sealing area with a lower height, and the detection circuit unit is installed in the second sealing area, which facilitates the installation of the detection circuit unit and can ensure the sealing effect of the first sealing area, ensuring the reliability of sealing and leakage detection.

[0023] In some embodiments, a transition slope is arranged at the joint between the first sealing area and the second sealing area.

[0024] The battery described in the embodiments of the present application can guide liquid from the first sealing area to the second sealing area by arranging a transition slope between the first sealing area and the second sealing area, which can improve the accuracy and timeliness of liquid leakage detection.

[0025] In some embodiments, the liquid leakage detection module includes a power supply unit for supplying power to the detection circuit unit and the controller, wherein the power supply unit includes a self-generating power supply unit.

[0026] The battery described in the embodiments of the present application can continuously provide power for detection by using a self-generating power supply unit and other power supply units, which can ensure the stability of detection.

[0027] In some embodiments, the communication mode of the liquid leakage detection module for sending the liquid leakage detection result includes a wireless communication mode.

[0028] The battery described in the embodiments of the present application can send the liquid leakage detection result to a target system through a wireless communication mode, without wiring, which facilitates the deployment of the liquid leakage detection module and can ensure the communication quality.

[0029] According to a second aspect of the present disclosure, a battery is provided, which is used to provide power.

[0030] According to a third aspect of the present disclosure, a leakage detection method is provided, which is applied to a battery including a sealing member and a liquid leakage detection module, and is executed in the liquid leakage detection module, including: detecting whether liquid leakage occurs at a sealing position of the sealing member; and sending a liquid leakage detection result to a target system in a case where it is determined that liquid leakage occurs at the sealing position.

[0031] The leakage detection method described in the embodiments of the present application can detect whether liquid leakage occurs at a sealing position of a sealing member, which avoids false alarm caused by condensate water and the like, and improves the accuracy of liquid leakage detection; and by sending a liquid leakage detection result to a target system, the liquid leakage detection of the sealing member can be monitored.

[0032] In some embodiments, the liquid leakage detection module comprises a detection circuit unit and a controller, the detection circuit unit is arranged on the sealing surface of the seal; the liquid leakage detection method is executed in the controller, the detection of whether the seal leaks liquid comprises: collecting an electrical parameter of the detection circuit unit, determining whether the sealing surface leaks liquid based on the electrical parameter; the sending of the liquid leakage detection result to the target system in the case that the seal leaks liquid comprises: generating the liquid leakage detection result in the case that the sealing surface leaks liquid, and sending the liquid leakage detection result to the target system.

[0033] The liquid leakage detection method provided in the embodiments of the present application can accurately detect whether the sealing surface leaks liquid and send a detection result of the liquid leakage detection.

[0034] In some embodiments, the detection circuit unit comprises at least one detection circuit, each detection circuit comprises a detection line and an induction line, a first end of the detection line and a first end of the induction line are connected, a second end of the detection line and a second end of the induction line are connected to the controller, and the electrical resistance value per unit length of the induction line is a constant value; the collecting of the electrical parameter of the detection circuit unit and the determining of whether the sealing surface leaks liquid based on the electrical parameter of the detection circuit unit comprises: collecting the electrical parameter of the at least one detection circuit, and determining whether the sealing surface leaks liquid based on the electrical parameter of the at least one detection circuit.

[0035] The liquid leakage detection method provided in the embodiments of the present application can accurately detect whether the sealing surface leaks liquid and send a detection result of the liquid leakage detection.

[0036] In some embodiments, the number of the detection circuits is two, the two detection circuits are arranged on the sealing surface, and the induction lines of the two detection circuits are arranged adjacently; the liquid leakage detection result comprises first liquid leakage alarm information, the determining of whether the sealing surface leaks liquid based on the electrical parameter of the at least one detection circuit comprises: in the case that the current value of one of the two detection circuits is greater than a current threshold value, it is determined that the sealing surface leaks liquid; and the first liquid leakage alarm information is generated and sent to the target system.

[0037] The liquid leakage detection method provided in the embodiments of the present application can detect whether the sealing surface leaks liquid and send alarm information, thereby realizing a liquid leakage alarm reminding function.

[0038] In some embodiments, the leakage detection result includes second leakage warning information, and the generating the leakage detection result and sending the target system further includes: generating the second leakage warning information and sending the target system in a case that the first leakage warning information is sent and the sensing lines of the two detection lines are turned on.

[0039] The leakage detection method provided in the embodiments of the present application can reduce the occurrence of false leakage reports and improve detection accuracy by generating the second leakage warning information and sending the target system in a case that the sensing lines of the two detection lines are turned on.

[0040] In some embodiments, the generating the second leakage warning information includes: determining position information of a liquid leakage point based on a voltage between the second ends of the sensing lines of the two detection lines, a voltage between the second ends of the detection lines of the two detection lines, and a length of the sensing line; and generating the second leakage warning information based on the position information.

[0041] The leakage detection method provided in the embodiments of the present application can accurately determine the position of the liquid leakage and provide a leakage point positioning report function, thereby improving the work efficiency of leakage point troubleshooting.

[0042] According to a fourth aspect of the present disclosure, a computer readable storage medium is provided, which stores computer instructions, and the instructions are executed by a processor to perform the leakage detection method as described above.

[0043] According to a fifth aspect of the present disclosure, a computer program product is provided, which stores computer instructions, and the instructions are executed by a processor to perform the leakage detection method as described above.

[0044] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of the drawings.

[0046] Fig. 1 is a schematic diagram of a module of some embodiments of the battery of the present disclosure;

[0047] Fig. 2A is a schematic diagram of a module of some embodiments of the liquid leakage detection module of the battery of the present disclosure, and Fig. 2B is a schematic diagram of a module of other embodiments of the liquid leakage detection module of the battery of the present disclosure;

[0048] Fig. 3A is a schematic diagram of a perspective view of some embodiments of the installation detection circuit unit of the present disclosure, and Fig. 3B is a schematic diagram of a top view of some embodiments of the installation detection circuit unit;

[0049] Fig. 4 is a schematic diagram of a transition slope provided for a seal of the battery of the present disclosure;

[0050] Fig. 5 is a schematic diagram of other embodiments of the installation detection circuit unit of the present disclosure;

[0051] Fig. 6A is a schematic diagram of a box of the battery, Fig. 6B is a schematic diagram of the battery of the present disclosure applied to the box of the battery, and Fig. 6C is a schematic diagram of transmission of a detection result information;

[0052] Fig. 7 is a schematic diagram of the detection circuit unit of the present disclosure including one detection line;

[0053] Figs. 8A to 8E are detection schematic diagrams of the detection circuit unit of the present disclosure including two detection lines; Fig. 8A is a detection schematic diagram of the detection circuit unit in the case where no liquid leakage occurs on a sealing surface; Fig. 8B is a detection schematic diagram of one detection line of the detection circuit unit being soaked by liquid; Fig. 8C is a detection schematic diagram of the sensing lines of the two detection lines of the detection circuit unit being soaked by liquid; Fig. 8D is an equivalent circuit schematic diagram of the sensing lines of the two detection lines of the detection circuit unit being soaked by liquid; and Fig. 8E is a detection schematic diagram of the other detection line of the detection circuit unit being soaked by liquid;

[0054] Fig. 9 is a flow schematic diagram of some embodiments of the leakage detection method of the present disclosure;

[0055] Fig. 10 is a flow schematic diagram of other embodiments of the leakage detection method of the present disclosure. DETAILED DESCRIPTION

[0056] The embodiments of the present application will be described in detail below with reference to the drawings. The following examples are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot be used to limit the protection scope of the present application.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising," "comprises" and "including" as used herein are synonymous with and meant to have the same meaning as the term "including"; the term "coupled" as used herein means the joining of two members together with one or more intervening members.

[0058] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0059] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. The skilled person explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0060] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0061] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0062] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0063] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0064] The present disclosure provides a battery 10, which can be various batteries such as lithium batteries and the like. As shown in FIG. 1, the battery 10 includes a sealing member 11 and a liquid leakage detection module 12. The sealing member 11 is used to prevent liquid from entering various devices such as a box, and the liquid can be various liquids such as water. The mounting position of the sealing member 11 can be various, and the mounting position can be determined according to the sealing needs.

[0065] For example, the battery 10 includes a box, and the sealing member 11 can be mounted at the connection position of the upper box and the lower box of the box. The sealing member 11 can be various sealing members such as a sealing strip, a sealing gasket and the like, and the material of the sealing member 11 can be various materials such as rubber and the like.

[0066] The liquid leakage detection module 12 is integrated with the sealing member 11, and the liquid leakage detection module 12 is used to detect whether the sealing member 11 has liquid leakage, and in the case where it is determined that the sealing member has liquid leakage, the liquid leakage detection result is sent to a target system. The target system corresponds to the application of the battery 10, and can be various systems. For example, the target system is a BMS (Battery Management System, battery management system).

[0067] The liquid leakage detection module 12 detects whether the sealing member 11 leaks liquid, so that the battery 10 has the capability of liquid leakage detection, can detect whether the sealing position of the sealing member 11 leaks liquid, avoids false alarm caused by condensed water and the like, and improves the accuracy of liquid leakage detection; by sending the liquid leakage detection result to the target system, the liquid leakage detection can be monitored.

[0068] The communication mode of the liquid leakage detection module 12 sending the liquid leakage detection result can use wired or wireless communication mode. For example, the liquid leakage detection module 12 can send the liquid leakage detection result to the target system through Bluetooth or other wireless communication mode, without wiring, which is convenient for deploying the liquid leakage detection module 12 and can ensure the communication quality.

[0069] The liquid leakage detection module can be various. As shown in FIG. 2A, the liquid leakage detection module includes a detection circuit unit 121 and a controller 122, and the detection circuit unit 121 is installed on the sealing surface of the sealing member 11. The sealing surface of the sealing member 11 is the surface that contacts the part of the device such as the box that needs to be sealed and plays a sealing role, which can prevent liquid such as water from entering the inside of the device from the outside.

[0070] The controller 122 is electrically connected with the detection circuit unit 121, the controller 122 collects the electrical parameters of the detection circuit unit 121, which can be current, voltage, etc. The controller 122 determines whether the sealing surface of the sealing member 11 leaks liquid based on the electrical parameters. If the controller 122 determines that the sealing surface of the sealing member 11 leaks liquid, it generates a liquid leakage detection result and sends it to the target system. The controller 122 can be various controllers.

[0071] By setting the detection circuit unit 121 on the sealing surface of the sealing member 11, the controller 122 collects the electrical parameters of the detection circuit unit 121 to determine whether the sealing surface leaks liquid, which can accurately detect whether the sealing surface leaks liquid; by sending the detection report by the controller 122, the liquid leakage detection of the sealing surface can be monitored.

[0072] As shown in FIG. 2B, the liquid leakage detection module 12' includes a detection circuit unit 121, a controller 122 and a power supply unit 123. The power supply unit 123 can be various power supplies, and can use various power supply modes to supply power to the detection circuit unit 121 and the controller 122. The power supply unit 123 can include a self-power generation power supply unit, etc., which can be a thermocouple self-power generation power supply unit, etc.

[0073] If the detection circuit unit 121 and the controller 122 are powered by an external power source, there may be a situation where the power supply cannot be sustained, and the detection stability is poor. By powering the detection circuit unit 121 and the controller 122 by a power supply unit 123 such as a self-generating power supply unit, the detection can be continuously powered, and the stability of the detection can be ensured.

[0074] The shape of the sealing member 11 can be various, such as a ring shape, a strip shape, etc. The sealing member 11 in a strip shape is described below. As shown in FIGS. 3A and 3B, the sealing surface of the sealing member 11 includes adjacent first sealing areas 111 and second sealing areas 112, the height of the first sealing areas 111 is higher than the height of the second sealing areas 112, and the detection circuit unit 121 is installed in the second sealing areas 112. The detection circuit unit 121 can be various, for example, the detection circuit unit 121 is a FPC (Flexible Printed Circuit).

[0075] The first sealing areas 111 are effective sealing areas, and through holes 113 are provided in the first sealing areas 111, which are used to pass through fastening bolts, etc. The first sealing areas 111 mainly play a sealing role to prevent water and other liquids from entering the device such as a box. The detection circuit unit 121 is installed in the second sealing areas 112, which are sensing areas for liquid leakage sensing.

[0076] When the sealing surface of the sealing member 11 leaks, the leaked liquid can enter the second sealing areas 112 through the first sealing areas 111; when the liquid flows through the detection circuit unit 121, the electrical parameters of the detection circuit unit 121 change, and the controller can determine that the sealing surface has leaked based on the change of the electrical parameters of the detection circuit unit 121.

[0077] The height of the first sealing areas 111 is higher than the height of the second sealing areas 112, which facilitates the flow of the leaked liquid to the second sealing areas 112. The height difference between the first sealing areas 111 and the second sealing areas 112 can be 0.5-2mm, for example, the height difference is 1mm.

[0078] The sealing surface of the sealing member 11 includes the first sealing areas 111 and the second sealing areas 112, which can guide the liquid from the first sealing areas 111 with a higher height to the second sealing areas 112 with a lower height; the installation of the detection circuit unit 121 in the second sealing areas 112 facilitates the installation of the detection circuit unit 121 and can ensure the sealing effect of the first sealing areas 111, ensuring the reliability of the sealing and leakage detection.

[0079] As shown in FIG. 4, a through hole 113 is arranged in the first sealing area 111, and the through hole 113 is used to pass through a fastening bolt or the like. The distance between the end of the through hole 113 and the edge of the second sealing area 112 is L, and by setting the minimum value of L, the sealing effect of the first sealing area 111 can be guaranteed. L can be 6-10 mm, for example, 8 mm. For example, experiments are conducted on the seal, and when the minimum value of L is controlled to be 8 mm±0.5 mm, the sealing effect of the first sealing area 111 of the seal can be guaranteed.

[0080] As shown in FIG. 4, the height of the first sealing area 111 is higher than the height of the second sealing area 112, and a transition slope 114 is arranged at the joint between the first sealing area 111 and the second sealing area 112. The inclination angle of the transition slope 114 can be 10-45 degrees, for example, 10 degrees. The transition slope 114 can be arranged to achieve better drainage. For example, the conventional thickness of the seal is generally 3 mm, and through experiments, when the inclination angle of the transition slope 114 is 10 degrees, the minimum requirement for drainage can be met.

[0081] By arranging the transition slope 114 between the first sealing area 111 and the second sealing area 112, the liquid can be guided from the first sealing area 111 to the second sealing area 112, and the accuracy and timeliness of the liquid leakage detection can be improved.

[0082] As shown in FIG. 5, the detection circuit unit 121 is an FPC, and a liquid leakage hole 124 is arranged on the surface of the FPC. The liquid leakage hole 124 can be a honeycomb through hole or the like, and the FPC can be pasted in the second sealing area 112. The length of the FPC can be set according to the length of the second sealing area 112. The width and thickness of the FPC can be set according to the detection requirement. For example, the width of the FPC is 0.8-1.2 mm, and the thickness of the FPC is 0.01-0.02 mm. The leaked liquid can enter the FPC through the liquid leakage hole 124 and contact the circuit in the FPC. The size and layout of the liquid leakage hole 124 can be set according to the detection requirement.

[0083] The battery in the embodiments of the present disclosure can be applied in a box or the like, and the box can be a battery box or the like. As shown in FIGS. 6A and 6B, the battery box includes an upper box 010 and a lower box 020. The lower edge of the upper box 010 is provided with a first connecting part 011, the upper edge of the lower box 020 is provided with a second connecting part 021, and the cavity 022 of the lower box 020 is used to install a battery cell module or the like.

[0084] In the state that the first connecting part 011 of the upper box 010 and the second connecting part 021 of the lower box 020 are connected by a bolt, the seal of the battery in the embodiments of the present disclosure can be arranged between the first connecting part 011 and the second connecting part 021, and the seal can play a role of waterproofing and sealing.

[0085] A plurality of battery cell modules are arranged in the cavity 022, which can be lithium battery cell modules. A BMS can be arranged in the cavity 022. The sealing member 11 can be a ring-shaped sealing gasket, which is installed on the second connecting portion 021 before the first connecting portion 011 of the upper box body 010 and the second connecting portion 021 of the lower box body 020 are bolted together. A through hole 113 is arranged on the sealing member 11, and the bolt passes through the through hole 113 in the state that the upper box body 010 and the lower box body 020 are bolted together. The sealing member 11 is used to seal the gap at the connecting position of the upper box body 010 and the lower box body 020, so as to prevent water and other liquids from entering the upper box body 010 and / or the lower box body 020.

[0086] The sealing surface of the sealing member 11 is the surface that contacts the first connecting portion 011 and plays a sealing role. The sealing surface of the sealing member 11 includes a first sealing area 111 and a second sealing area, and a detection circuit unit 121 is installed on the second sealing area. A controller 122 is electrically connected to the detection circuit unit 121, and a power supply unit 123 supplies power to the detection circuit unit 121 and the controller 122. The controller 122 collects the electrical parameters of the detection circuit unit 121 and determines whether the first sealing area 111 leaks based on the electrical parameters.

[0087] As shown in FIG. 6C, when the first sealing area 111 leaks, water and other liquids outside the box body of the battery enter the detection circuit unit 121 installed on the second sealing area through the first sealing area 111, and the controller 122 determines that the liquid leakage occurs according to the change of the electrical parameters of the detection circuit unit 121, generates a liquid leakage detection result and sends it to the BMS 03.

[0088] The controller 122 can send the liquid leakage detection result to the BMS 03 by using a wireless communication method such as Bluetooth, and the BMS 03 can transmit the liquid leakage detection result to the vehicle system 04, which can instruct relevant personnel to perform detection and other operations.

[0089] The detection circuit unit can include one or more detection circuits, which can be various circuits. As shown in FIG. 7, the detection circuit unit includes one detection circuit, which includes a detection line 1211 and an induction line 1212. The first end of the detection line 1211 is connected to the first end of the induction line 1212, and the second end of the detection line 1211 and the second end of the induction line 1212 are connected to the controller 122, forming a detection loop.

[0090] The inductive wire 1212 is a uniformly distributed wire, and the resistance value per unit length of the inductive wire 1212 is a constant value. For example, the resistance per centimeter of the inductive wire 1212 is a constant value r constant, which corresponds to the material of the inductive wire 1212. For inductive wires 1212 of different materials, r constant is different. The detection wire 1211 can be a copper wire or the like, and the resistance of the detection wire 1211 is close to zero.

[0091] The liquid leakage detection of the sealing surface is performed through the detection circuit, and whether the liquid leakage occurs on the sealing surface can be accurately detected. The position of the leakage point can be located through the inductive wire.

[0092] The controller 122 can be electrically connected with the one or more detection circuits, and is configured to determine whether the liquid leakage occurs on the sealing surface based on the electrical parameter of the one or more detection circuits. As shown in FIG. 7, the controller 122 acquires the electrical parameter of the detection circuit composed of the detection wire 1211 and the inductive wire 1212. The electrical parameter can be a current or the like. The controller 122 can set an electrical parameter threshold value corresponding to the electrical parameter, such as a current threshold value or the like. The controller 122 determines whether the liquid leakage occurs on the sealing surface based on the electrical parameter.

[0093] For example, the electrical signal threshold value can be a current threshold value. When the liquid leakage occurs on the sealing surface of the sealing member, the liquid leakage makes the detection wire 1211 and the inductive wire 1212 conductive. When the controller 122 determines that the current of the detection circuit composed of the detection wire 1211 and the inductive wire 1212 is greater than the current threshold value, it is determined that the liquid leakage occurs on the sealing surface, and the first liquid leakage warning information is generated and sent to the target system.

[0094] In some embodiments, the number of detection circuits is two. The two detection circuits are installed on the sealing surface, and the inductive wires of the two detection circuits are arranged adjacent to each other. For example, the detection circuit unit is an FPC, and the FPC includes two detection circuits. The two detection circuits have four wires, and the gap between the wires can be 1 mm-2 mm, which can ensure the sensitivity of detection and can avoid false positives. The four wires are wrapped in a resin material to protect the four wires. The surface of the FPC is a film with honeycomb-shaped through holes. The honeycomb-shaped through holes can make the liquid leakage contact the wires, and the size and pitch of the honeycomb-shaped through holes can be determined based on experiments.

[0095] The liquid leakage detection of the sealing surface is performed through the two detection circuits installed on the sealing surface, and whether the liquid leakage occurs on the sealing surface can be accurately detected, and the position of the leakage point can be located.

[0096] As shown in FIG. 8A, the first detection circuit includes a detection line 1213 and an induction line 1214, and a first end A1 of the detection line 1213 is connected to a first end B1 of the induction line 1214; a second end A2 of the detection line 1211 and a second end B2 of the induction line 1214 are connected to the controller 122, forming a first loop. The power supply unit and the controller 122 can apply a voltage, for example, 5V, to the second end A2 of the detection line 1211 and the second end B2 of the induction line 1214.

[0097] The second detection circuit includes a detection line 1216 and an induction line 1215, and the induction line 1214 and the induction line 1215 are arranged adjacent to each other; a first end D1 of the detection line 1216 is connected to a first end C1 of the induction line 1215; a second end D2 of the detection line 1216 and a second end C2 of the induction line 1215 are respectively connected to the controller 122, forming a second loop; the power supply unit and the controller 122 can apply a voltage, for example, 5V, to the second end D2 of the detection line 1216 and the second end C2 of the induction line 1215.

[0098] The controller 122 detects the electrical parameters of the first detection circuit and the second detection circuit, which can be current, etc. In the case that the sealing surface does not leak liquid, there is no liquid from the outside leaking on the sealing surface, the current 1 of the first detection circuit detected by the controller 122 is the ratio of 5V voltage to the total resistance of the first detection circuit, and the current 2 of the second detection circuit detected by the controller 122 is the ratio of 5V voltage to the total resistance of the second detection circuit.

[0099] Since the total resistance of the first detection circuit and the total resistance of the second detection circuit are basically the same or have a small difference, the current 1 and the current 2 are also basically the same or have a small difference. The controller 122 can pre-set a current threshold, and in the case that the current 1 and the current 2 are both less than the current threshold, it is determined that the sealing surface does not leak liquid, and the current threshold can be set according to experimental data.

[0100] The liquid leakage detection result includes first liquid leakage warning information, etc. The controller 122 determines that the sealing surface leaks liquid in the case that the electrical parameter of one of the first detection circuit and the second detection circuit is greater than an electrical parameter threshold, generates the first liquid leakage warning information, and sends it to the target system.

[0101] For example, as shown in FIG. 8B, when the sealing surface leaks external liquid, the liquid seeps into the sealing surface and wets the first detection circuit, and the liquid short-circuits the detection line 1213 and the induction line 1214 of the first detection circuit, so that the total resistance of the first detection circuit changes and the current of the first detection circuit increases significantly.

[0102] The controller 122 determines that the sealing surface has liquid leakage when the current of the first detection circuit is greater than the current threshold value, and generates and sends the first liquid leakage warning information to the target system. By generating and sending the first liquid leakage warning information to the target system when the electrical parameter of one of the two detection circuits is greater than the electrical parameter threshold value, the controller 122 can detect whether the sealing surface has liquid leakage, and can send the warning information, thereby realizing the leakage warning reminding function.

[0103] The unit length resistance value of the sensing line of the first detection circuit is a constant value, and the resistance of the detection line of the first detection circuit is usually close to 0; when the current of the first detection circuit is greater than the current threshold value, the controller 122 detects the voltage and the current of the first detection circuit, and by calculating the quotient of the voltage and the current, the resistance value corresponding to the first detection circuit can be determined; by calculating the quotient of the resistance value and the unit length resistance value of the sensing line, the length of the sensing line can be obtained, which can be regarded as the distance between the position of the first detection circuit wetted by the liquid and the controller 122, and based on the length of the sensing line, the position of the liquid leakage can be determined.

[0104] As shown in FIG. 8C, when the liquid seeps into the sealing surface and wets the first detection circuit, the liquid can continue to flow, and when the liquid flows between the first detection circuit and the second detection circuit, the first detection circuit and the second detection circuit are wetted by the liquid, and the liquid short-circuits the sensing line 1214 and the sensing line 1215, so that the sensing line 1214 and the sensing line 1215 are turned on.

[0105] The first liquid leakage warning information sent by the controller 122 can be false information. The liquid leakage detection result includes the second liquid leakage warning information, and the controller 122 generates and sends the second liquid leakage warning information to the target system when the first liquid leakage warning information is sent and it is determined that the sensing line 1214 and the sensing line 1215 are turned on. When the sensing lines of the two detection circuits are turned on, it can be determined that the liquid continues to leak, and the controller 122 generates and sends the second liquid leakage warning information to the target system, which can reduce the occurrence of false liquid leakage and improve the detection accuracy.

[0106] The controller 122 can also generate and send the second liquid leakage warning information to the target system when the first liquid leakage warning information is sent and it is determined that the voltage change of the second detection circuit exceeds the voltage change threshold value, and the voltage change threshold value can be set according to the results of the liquid leakage detection experiment.

[0107] The controller 122 can determine the position information of the liquid leakage point based on the voltage between the second end B2 of the induction line 1214 and the second end C2 of the induction line 1215, the voltage between the second end A2 of the detection line 1213 and the second end D2 of the detection line 1216, the lengths of the induction line 1214 and the induction line 1215; the controller 122 generates second liquid leakage warning information based on the position information and sends it to the target system.

[0108] By determining the position information of the liquid leakage point by the controller 122, generating the second liquid leakage warning information based on the position and sending it to the target system, the liquid leakage position can be accurately determined, and the leakage point positioning report function can be provided, which can improve the work efficiency of the leakage point troubleshooting.

[0109] The controller 122 sets multiple detection circuits or detection units to detect whether the induction line 1214 and the induction line 1215 are conductive, and in the case that the induction line 1214 and the induction line 1215 are determined to be conductive, the point of short circuit, i.e. the position information of the liquid leakage, is calculated according to the resistance voltage distribution relationship.

[0110] When the liquid wets the induction line 1214 and the induction line 1215, the wetting points E1 and E2 of the liquid will divide the induction line 1214 or the induction line 1215 into two parts, and the original parallel circuit becomes a series circuit; the series circuit includes two circuits, the first circuit is B2-E1-E2-C2, and the second circuit is A2-A1-B1-E1-E2-C1-D1-D2, and the two circuits are considered to be connected in series.

[0111] The controller 122 can detect the voltage of the first circuit B2-E1-E2-C2 and the voltage of the second circuit A2-A1-B1-E1-E2-C1-D1-D2, and determine the resistance ratio of the first circuit B2-E1-E2-C2 and the second circuit A2-A1-B1-E1-E2-C1-D1-D2 according to the voltage ratio of the first circuit B2-E1-E2-C2 and the second circuit A2-A1-B1-E1-E2-C1-D1-D2.

[0112] The lengths of the induction line 1214 and the induction line 1215 are the same, and the resistance value per unit length of the induction line 1214 and the induction line 1215 is a constant value, and the resistance of the detection line 1213 and the detection line 1216 is usually close to 0, so the length ratio of the two parts of the induction line 1214 (or the induction line 1215) can be determined according to the resistance ratio of the first circuit B2-E1-E2-C2 and the second circuit A2-A1-B1-E1-E2-C1-D1-D2. For example, the length ratio between the length of the B2-E1 part in the induction line 1214 and the length of the E1-B1 part is determined, and based on this length ratio, the position information of the liquid leakage point can be determined.

[0113] When the liquid wets the sensing line 1214 and the sensing line 1215, the simplified circuit of the two detection lines is shown in FIG. 8D, RA0 is the resistance of the first circuit B2-E1-E2-C2, and RB0 is the resistance of the second circuit A2-A1-B1-E1-E2-C1-D1-D2. The ratio of RA0 to RB0 is 1:1, which determines that the length ratio between the length of the B2-E1 part in the sensing line 1214 and the length of the E1-B1 part is 1:1, and the position of the liquid leakage point is determined to be the center position of the sensing line 1214.

[0114] In some embodiments, in the case where the controller 122 detects that the value of the current detected by one of the two detection lines is greater than the current threshold value, it is determined that the liquid such as water causes the sensing line and the detection line of this detection line to be short-circuited, a first liquid leakage warning information is generated and sent to the BMS. The first liquid leakage warning information is a first-level alarm information, the first-level alarm information is a primary alarm, which realizes the reminding function, and the first-level alarm information can also be a false alarm information.

[0115] If a real liquid leakage occurs, there will usually be continuous liquid leakage at the leakage position. After the controller 122 sends the first liquid leakage warning information, it is determined that the sensing lines of the two detection lines are turned on, it is determined that the liquid such as water causes the circuit of the two detection lines to change, according to the resistance-voltage distribution relationship, the position information of the liquid leakage point is calculated, so as to trigger the alarm, generate a second liquid leakage warning information, and send it to the target system. The second liquid leakage warning information is a second-level alarm information.

[0116] A variety of other methods can be used to determine the position information of the liquid leakage point. For example, the unit length resistance value of the sensing line of the first detection line and the second detection line is a constant value, and the resistance of the detection line of the first detection line and the second detection line is usually close to 0; the controller 122 can detect the voltage and current of the first circuit B2-E1-E2-C2, and by calculating the quotient of the current and the voltage, the resistance of the first circuit B2-E1-E2-C2 can be obtained. By calculating the quotient of this resistance value and the unit length resistance value of the sensing line, the total length of the sensing line B2-E1 and the sensing line E2-C2 (the length of the sensing line B2-E1 and the length of the sensing line E2-C2 can be considered the same) can be obtained. Half of the total length is taken as the length of the sensing line B2-E1 and the length of the sensing line E2-C2. The length of the sensing line B2-E1 and the length of the sensing line E2-C2 can be considered as the distance between the position wetted by the liquid and the controller 122, and the position of the liquid leakage can be determined.

[0117] The second liquid leakage warning information is a second-level warning signal that can be located. The second liquid leakage warning information is transmitted to the BMS, and the BMS transmits the second liquid leakage warning information to the vehicle controller, so that relevant personnel can determine the liquid leakage position and perform corresponding inspection, repair and other operations, thereby improving the work efficiency of the leakage point investigation.

[0118] As shown in FIG. 8E, when the first detection circuit and the second detection circuit are wetted by the liquid, the liquid can continue to flow. When the second detection circuit is wetted by the liquid, the detection line 1216 and the sensing line 1215 are short-circuited, so that the total resistance of the second detection circuit changes, and the current of the second detection circuit significantly increases. In the case where the current of the second detection circuit is greater than the current threshold, since the controller 122 has sent the liquid leakage warning information, the second liquid leakage warning information, etc., the controller 122 can send the liquid leakage warning information or other indication information to the BMS, or can not send information to the BMS.

[0119] In some embodiments, the present disclosure provides a power-using device, which includes the battery in any of the above embodiments, and the battery is used to provide electric energy. The power-using device can be a car or the like.

[0120] In some embodiments, the present disclosure provides a leakage detection method, which is applied to the battery in any of the above embodiments, the battery includes a sealing member and a liquid leakage detection module, and the leakage detection method is executed in the liquid leakage detection module. FIG. 9 is a flowchart of some embodiments of the leakage detection method of the present disclosure, as shown in FIG. 9:

[0121] In step S901, it is detected whether the sealing member has liquid leakage.

[0122] In step S902, in the case where it is determined that the sealing member has liquid leakage, a liquid leakage detection result is sent to a target system.

[0123] The liquid leakage detection module includes a detection circuit unit and a controller, and the detection circuit unit is arranged on the sealing surface of the sealing member. The electric parameters of the detection circuit unit are collected, and it is determined whether the sealing surface has liquid leakage based on the electric parameters. In the case where it is determined that the sealing surface has liquid leakage, a liquid leakage detection result is generated and sent to a target system.

[0124] The detection circuit unit includes at least one detection circuit, and each detection circuit includes a detection line and a sensing line. The first end of the detection line and the first end of the sensing line are connected, and the second end of the detection line and the second end of the sensing line are connected to the controller. The unit length resistance value of the sensing line is a constant value. The electric parameters of the at least one detection circuit are collected, and it is determined whether the sealing surface has liquid leakage based on the electric parameters of the at least one detection circuit.

[0125] In some embodiments, two detection lines are installed on the sealing surface, and the sensing lines of the two detection lines are arranged adjacently; the liquid leakage detection result comprises first liquid leakage warning information and second liquid leakage warning information. In a case where the current value of one of the two detection lines is greater than the current threshold, it is determined that the sealing surface has liquid leakage; the first liquid leakage warning information is generated and sent to the target system; in a case where the first liquid leakage warning information is sent and it is determined that the sensing lines of the two detection lines are turned on, the second liquid leakage warning information is generated and sent to the target system.

[0126] FIG. 10 is a flowchart of another embodiment of the leakage detection method of the present disclosure, as shown in FIG. 10:

[0127] In step S1001, in a case where the value of the electrical parameter of one of the two detection lines is greater than the electrical parameter threshold, it is determined that the sealing surface has liquid leakage.

[0128] In step S1002, the first liquid leakage warning information is generated and sent to the target system.

[0129] In step S1003, in a case where the first liquid leakage warning information is sent and it is determined that the sensing lines of the two detection lines are turned on, the position information of the liquid leakage point is determined based on the voltage between the second ends of the sensing lines of the two detection lines, the voltage between the second ends of the detection lines of the two detection lines, and the length of the sensing lines.

[0130] In step S1004, the second liquid leakage warning information is generated based on the position information and sent to the target system.

[0131] In some embodiments, the present disclosure provides a computer readable storage medium storing computer instructions, which are executed by a processor to perform the leakage detection method in any of the above embodiments.

[0132] The computer readable storage medium can employ any combination of one or more of readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium, for example, can include but is not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or apparatus, or any combination of the above. More specific examples (a non-exhaustive list) of the readable storage medium can include an electrical connection having one or more wires, a portable disc, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0133] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions specified in the flowchart block or blocks or in conjunction with the flowcharts described in the exemplary methods section of this specification.

[0134] Embodiments of the present disclosure can also be a computer program product, which includes a computer program instruction, which, when executed by a processor, causes the processor to perform the steps of the leakage detection method according to various embodiments of the present disclosure described in the above "Exemplary Methods" section of this specification.

[0135] The steps of the methods of the present disclosure are not limited to the order described above specifically unless otherwise specified. Furthermore, in some embodiments, the present disclosure can also be implemented as programs recorded in recording media, which include machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers recording media storing programs for executing the methods according to the present disclosure.

[0136] Although the present application has been described with reference to preferred embodiments, various modifications can be made to it without departing from the scope of the application. In particular, the technical features mentioned in each of the embodiments can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, comprising: a seal; a liquid leakage detection module configured to detect whether a sealing surface of the seal leaks liquid, and send a liquid leakage detection result to a target system if it is determined that the sealing surface leaks liquid.

2. The battery of claim 1, wherein, The liquid leakage detection module comprises: a detection circuit unit installed on the sealing surface; a controller electrically connected to the detection circuit unit, configured to collect an electrical parameter of the detection circuit unit, determine whether the sealing surface leaks liquid based on the electrical parameter, and generate the liquid leakage detection result and send it to the target system if it is determined that the sealing surface leaks liquid. 3.The battery of claim 2, wherein: the detection circuit unit comprises at least one detection line, each of the detection lines comprising a detection wire and an induction wire; a first end of the detection wire and a first end of the induction wire are connected, and a second end of the detection wire and a second end of the induction wire are connected to the controller respectively; the controller is configured to determine whether the sealing surface leaks liquid based on an electrical parameter of the at least one detection line. 4.The battery of claim 3, wherein: a unit length of the induction wire has a constant resistance value.

5. The battery of claim 4, wherein, the number of the detection lines is two; two of the detection lines are installed on the sealing surface, and the induction wires of the two detection lines are arranged adjacently.

6. The battery of claim 5, wherein, the liquid leakage detection result comprises first liquid leakage warning information; the controller is configured to determine that the sealing surface leaks liquid if a current value of one of the two detection lines is greater than a current threshold, generate the first liquid leakage warning information, and send it to the target system.

7. The battery of claim 6, wherein, the liquid leakage detection result comprises second liquid leakage warning information; the controller is configured to generate the second liquid leakage warning information and send it to the target system if the first liquid leakage warning information is sent and it is determined that the induction wires of the two detection lines are turned on. 8.The battery of claim 7, wherein: the controller is configured to determine position information of a liquid leakage point based on a voltage between the second ends of the induction wires of the two detection lines, a voltage between the second ends of the detection wires of the two detection lines, and a length of the induction wire; and generate the second liquid leakage warning information based on the position information. 9.The battery of any one of claims 2 to 7, wherein: the sealing surface comprises adjacent first and second sealing areas, the first sealing area has a height higher than that of the second sealing area, and the detection circuit unit is installed in the second sealing area. 10.The battery of claim 9, wherein: a transition slope is arranged at a joint between the first and second sealing areas. the liquid leakage detection module comprises:

11. The battery of any one of claims 2 to 10, wherein, a power supply unit configured to supply power to the detection circuit unit and the controller, wherein the power supply unit comprises a self-generating power supply unit. 12.The battery of any one of claims 1 to 11, wherein: a communication mode of the liquid leakage detection module for sending the liquid leakage detection result comprises a wireless communication mode. 13.A power consumption device, comprising: ​ The battery of any one of claims 1-12, wherein the battery is configured to provide electrical energy.

14. A method of leak detection applied in a battery, wherein, The battery comprises a sealing member and a liquid leakage detection module, and the liquid leakage detection method is performed in the liquid leakage detection module, comprising: detecting whether the sealing surface of the sealing member is liquid leakage; in the case of determining that the sealing surface is liquid leakage, sending a liquid leakage detection result to a target system.

15. The leak detection method of claim 14, wherein, The liquid leakage detection module comprises a detection circuit unit and a controller, and the detection circuit unit is arranged on the sealing surface; The liquid leakage detection method is performed in the controller, and the detection of whether the sealing member is liquid leakage comprises: collecting an electrical parameter of the detection circuit unit, and determining whether the sealing surface is liquid leakage based on the electrical parameter; in the case of determining that the sealing surface is liquid leakage, generating the liquid leakage detection result and sending it to the target system. The detection circuit unit comprises at least one detection line, each detection line comprising a detection line and an induction line, the first end of the detection line and the first end of the induction line being connected, the second end of the detection line and the second end of the induction line being connected with the controller respectively, and the resistance value per unit length of the induction line being a constant value; 16. The leak detection method of claim 15, wherein, The collection of the electrical parameter of the detection circuit unit and the determination of whether the sealing surface is liquid leakage based on the electrical parameter comprise: collecting the electrical parameter of the at least one detection line, and determining whether the sealing surface is liquid leakage based on the electrical parameter of the at least one detection line. The number of detection lines is two, two detection lines are installed on the sealing surface, and the induction lines of the two detection lines are arranged adjacent to each other; 17. The leak detection method of claim 16, wherein, The liquid leakage detection result comprises first liquid leakage warning information, and the determination of whether the sealing surface is liquid leakage based on the electrical parameter of the at least one detection line comprises: in the case that the current value of one of the two detection lines is greater than a current threshold value, it is determined that the sealing surface is liquid leakage; The generation of the liquid leakage detection result and the sending to the target system comprise: generating the first liquid leakage warning information and sending it to the target system. The liquid leakage detection result comprises second liquid leakage warning information; and the generation of the liquid leakage detection result and the sending to the target system comprise:

18. The leak detection method of claim 17, wherein, in the case that the first liquid leakage warning information is sent and it is determined that the induction lines of the two detection lines are turned on, generating second liquid leakage warning information and sending it to the target system. The generation of second liquid leakage warning information comprises:

19. The leak detection method of claim 18, wherein, based on the voltage between the second ends of the induction lines of the two detection lines, the voltage between the second ends of the detection lines of the two detection lines, and the length of the induction line, determining the position information of the liquid leakage point; generating the second liquid leakage warning information based on the position information.

20. A computer readable storage medium, the computer readable storage medium storing computer instructions, the instructions being executed by a processor to perform the liquid leakage detection method of any one of claims 14-19. ​ 21. A computer program product storing computer instructions for execution by a processor to perform the leak detection method of any one of claims 14 to 19.

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