Battery damage detection method, detection circuit, electronic device and storage medium

Abstract

The present application discloses a battery damage detection method, a detection circuit, an electronic device and a storage medium. The method is applied to a detection circuit for damage detection of a soft-pack battery. The soft-pack battery includes an aluminum-plastic film and a tab. The aluminum-plastic film includes a first insulating layer, an aluminum layer and a second insulating layer stacked in sequence. The first insulating layer is wrapped around the tab. The detection circuit includes a first circuit. The first circuit is connected between the tab and the aluminum layer. The method includes detecting a first current of the first circuit when the first circuit is in a conducting state; and determining whether the first insulating layer is damaged according to the first current. In this method, when the first insulating layer is damaged, the tab, the aluminum layer and the first circuit form a loop, the first circuit generates a first current, and based on the detection of the first current of the first circuit, the first insulating layer is damaged, thereby improving the detection accuracy of damage detection of the soft-pack battery.

Description

Technical Field

[0001] The present application relates to the technical field of battery detection, and in particular to a battery damage detection method, a detection circuit, an electronic device and a storage medium. Background Art

[0002] Soft-pack batteries are widely used in various electronic equipment products. Soft-pack batteries use aluminum-plastic film as the shell material, which is very easy to be damaged. Damaged soft-pack batteries have great safety hazards. Therefore, damage detection of soft-pack batteries is essential.

[0003] At present, the damage detection of soft-pack batteries mainly relies on the manual visual inspection of the soft-pack batteries by inspectors. The detection results are easily affected by the subjective experience of the inspectors, resulting in low detection accuracy of the damage detection of soft-pack batteries. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a battery damage detection method, a detection circuit, an electronic device and a storage medium to overcome the above problems of the prior art.

[0005] In a first aspect, an embodiment of the present application provides a battery damage detection method, which is applied to a detection circuit for damage detection of a soft-pack battery. The soft-pack battery includes an aluminum-plastic film and a tab. The aluminum-plastic film includes a first insulating layer, an aluminum layer and a second insulating layer stacked in sequence. The first insulating layer is wrapped around the tab. The detection circuit includes a first circuit, which is connected between the tab and the aluminum layer. The battery damage detection method includes: when the first circuit is in a conducting state, detecting a first current of the first circuit; and determining whether the first insulating layer is damaged according to the first current.

[0006] According to the solution provided by the present application, when the first insulating layer is damaged, the tab, the aluminum layer and the first circuit form a loop, the first circuit generates a first current, and based on the detection of the first current of the first circuit, the first insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection for soft-pack batteries due to the subjective experience of detection personnel, and improving the detection accuracy of damage detection for soft-pack batteries.

[0007] Among them, in some optional embodiments, determining whether the first insulating layer is damaged is based on the first current, including: when a first current change value of the first current is greater than or equal to a first current change threshold, determining that the first insulating layer is damaged, the first current change value is calculated based on the first current detected at different times; when the first current change value is less than the first current change threshold, determining that the first insulating layer is not damaged.

[0008] In the solution provided in this embodiment, when the first insulating layer is damaged, a certain current change value can be detected in the first circuit, and the damage of the first insulating layer is judged based on the change value of the first current, which is conducive to improving the accuracy of the judgment on the damage of the first insulating layer.

[0009] Among them, in some optional embodiments, the first circuit is provided with a first electronic switch and a first Hall current sensor. When the first circuit is in an on state, before detecting the first current of the first circuit, the battery damage detection method also includes: controlling the first electronic switch to be in a closed state to make the first circuit in an on state; when the first circuit is in an on state, detecting the first current of the first circuit, including: when the first circuit is in an on state, controlling the first Hall current sensor to perform current detection on the first circuit to obtain the first current.

[0010] The solution provided in this embodiment controls the first circuit to be in an on state based on the first electronic switch, and detects the first current based on the first Hall current sensor, thereby improving the detection accuracy of the first current.

[0011] Among them, in some optional embodiments, the electrode tab includes a positive electrode tab, the first circuit includes a first sub-circuit, the first sub-circuit is connected between the positive electrode tab and the aluminum layer, the first electronic switch includes a first sub-electronic switch, the first sub-electronic switch is arranged in the first sub-circuit, and the first current includes a first sub-current; controlling the first electronic switch to be in a closed state so that the first circuit is in a conductive state, including: controlling the first sub-electronic switch to be in a closed state so that the first sub-circuit is in a conductive state; when the first circuit is in the conductive state, controlling the first Hall current sensor to perform current detection on the first circuit to obtain the first current, including: when the first sub-circuit is in the conductive state, controlling the first Hall current sensor to perform current detection on the first sub-circuit to obtain the first sub-current.

[0012] The solution provided in this embodiment controls the first sub-circuit to be in an on state based on the first sub-electronic switch, and detects the first sub-current based on the first Hall current sensor, thereby improving the detection accuracy of the first sub-current.

[0013] Among them, in some optional embodiments, determining whether the first insulating layer is damaged is based on the first current, including: when a first sub-current change value of the first sub-current is greater than or equal to a first current change threshold, determining that the first insulating layer is damaged, the first sub-current change value is calculated based on the first sub-current detected at different times; when the first sub-current change value of the first sub-current is less than the first current change threshold, determining that the first insulating layer is not damaged.

[0014] In the solution provided in this embodiment, when the first insulating layer is damaged, a certain current change value can be detected in the first sub-circuit, and the damage of the first insulating layer is judged based on the change value of the first sub-current, which is conducive to improving the accuracy of the judgment on the damage of the first insulating layer.

[0015] Among them, in some optional embodiments, the electrode tab includes a negative electrode tab, the first circuit includes a second sub-circuit, the second sub-circuit is connected between the negative electrode tab and the aluminum layer, the first electronic switch includes a second sub-electronic switch, the second sub-electronic switch is arranged in the second sub-circuit, and the first current includes the second sub-current; controlling the first electronic switch to be in a closed state so that the first circuit is in a conductive state, including: controlling the second sub-electronic switch to be in a closed state so that the second sub-circuit is in a conductive state; when the first circuit is in the conductive state, controlling the first Hall current sensor to perform current detection on the first circuit to obtain the first current, including: when the second sub-circuit is in the conductive state, controlling the first Hall current sensor to perform current detection on the second sub-circuit to obtain the second sub-current.

[0016] The solution provided in this embodiment controls the second sub-circuit to be in an on state based on the second sub-electronic switch, and detects the second sub-current based on the first Hall current sensor, thereby improving the detection accuracy of the second sub-current.

[0017] Among them, in some optional embodiments, determining whether the first insulating layer is damaged is based on the first current, including: when the second sub-current change value of the second sub-current is greater than or equal to the first current change threshold, determining that the first insulating layer is damaged, the second sub-current change value is calculated based on the second sub-current detected at different times; when the second sub-current change value of the second sub-current is less than the first current change threshold, determining that the first insulating layer is not damaged.

[0018] In the solution provided in this embodiment, when the first insulating layer is damaged, a certain current change value can be detected in the second sub-circuit, and the damage of the first insulating layer is judged based on the change value of the second sub-current, which is conducive to improving the accuracy of the judgment on the damage of the first insulating layer.

[0019] Among them, in some optional embodiments, the soft-pack battery also includes an electrolyte, and the electrolyte is partially filled between the tab and the first insulating layer. The battery damage detection method also includes: when it is determined that the first insulating layer is damaged, determining the damage position of the first insulating layer; when it is determined that the damage position is a non-electrolyte contact position, controlling the first circuit to switch to an open circuit state.

[0020] In the solution provided in this embodiment, when the damaged position of the first insulating layer is a non-electrolyte contact position, the aluminum layer contacts the pole ear and causes a short circuit, and the first current in the first circuit increases sharply, resulting in a great safety risk for the soft-pack battery. At this time, the first circuit is controlled to switch to an open circuit state, reducing the safety risk of the soft-pack battery.

[0021] Among them, in some optional embodiments, when it is determined that the first insulating layer is damaged, the damaged position of the first insulating layer is determined, including: when it is determined that the first insulating layer is damaged, and the first current change value is greater than or equal to the second current change threshold, the damaged position is determined to be a non-electrolyte contact position, and the second current change threshold is greater than the first current change threshold; when it is determined that the first insulating layer is damaged, and the first current change value is less than the second current change threshold, the damaged position is determined to be an electrolyte contact position.

[0022] In the solution provided in this embodiment, when the damaged position of the first insulating layer is a non-electrolyte contact position, the aluminum layer contacts the electrode ear and causes a short circuit, and the first current change value is large. The damaged position of the first insulating layer is judged based on the first current change value, thereby improving the accuracy of judging the damaged position of the first insulating layer.

[0023] Among them, in some optional embodiments, the battery damage detection method further includes: when it is determined that the first insulating layer is damaged according to the first current, sending a first warning message to the client.

[0024] The solution provided in this embodiment sends a first warning message to the client when it is determined that the first insulating layer is damaged, so that the user can handle the soft-pack battery according to the first warning message to avoid the damaged soft-pack battery from being continued to be used, which will increase the safety risk and help reduce the safety risk during the use of the soft-pack battery.

[0025] Among them, in some optional embodiments, the soft-pack battery also includes a graphite layer, the graphite layer is wrapped on the side of the second insulating layer away from the pole ear, the detection circuit also includes a second circuit, and the second circuit is connected between the aluminum layer and the graphite layer; the battery damage detection method also includes: when the second circuit is in a conductive state, detecting a second current of the second circuit; determining whether the second insulating layer is damaged according to the second current.

[0026] In the solution provided by this embodiment, when the second insulating layer is damaged, the aluminum layer, the graphite layer and the second circuit form a loop, and the second circuit generates a second current. Based on the second current detected in the second circuit, the second insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection of soft-pack batteries due to subjective experience of detection personnel, and improving the detection accuracy of damage detection of soft-pack batteries. Furthermore, the second insulating layer is detected for damage in real time based on the second current, thereby avoiding the increase in safety risks of the soft-pack battery during use due to the failure to promptly discover the damage of the second insulating layer, and reducing the safety risks of the soft-pack battery during use.

[0027] Among them, in some optional embodiments, determining whether the second insulating layer is damaged is based on the second current, including: when the second current change value of the second current is greater than or equal to a third current change threshold, determining that the second insulating layer is damaged, the second current change value is calculated based on the second current detected at different times; when the second current change value of the second current is less than the third current change threshold, determining that the second insulating layer is not damaged.

[0028] In the solution provided in this embodiment, when the second insulating layer is damaged, the second circuit can detect a certain current change value, and judge the damage of the second insulating layer based on the change value of the second current, which is conducive to improving the accuracy of judging the damage of the second insulating layer.

[0029] Among them, in some optional embodiments, the second circuit is provided with a second electronic switch and a second Hall current sensor. When the second circuit is in the on state, before detecting the second current of the second circuit, the battery damage detection method also includes: controlling the second electronic switch to be in a closed state to put the second circuit in the on state; when the second circuit is in the on state, detecting the second current of the second circuit, including: when the second circuit is in the on state, controlling the second Hall current sensor to perform current detection on the second circuit to obtain the second current.

[0030] The solution provided in this embodiment controls the second circuit to be in an on state based on the second electronic switch, and detects the second current based on the second Hall current sensor, thereby improving the detection accuracy of the second current.

[0031] Among them, in some optional embodiments, the battery damage detection method further includes: when it is determined that the second insulating layer is damaged according to the second current, sending a second warning message to the client.

[0032] The solution provided in this embodiment sends a second warning message to the client when it is determined that the second insulating layer is damaged, so that the user can handle the soft-pack battery according to the second warning message to avoid the damaged soft-pack battery from being continued to be used, which will increase the safety risk and help reduce the safety risk during the use of the soft-pack battery.

[0033] In the second aspect, an embodiment of the present application provides a battery damage detection method, which is applied to a detection circuit for damage detection of a soft-pack battery. The soft-pack battery includes an aluminum-plastic film, a pole ear and a graphite layer. The aluminum-plastic film includes a first insulating layer, an aluminum layer and a second insulating layer stacked in sequence. The first insulating layer is wrapped around the pole ear, and the graphite layer is wrapped around a side of the second insulating layer away from the pole ear. The detection circuit includes a second circuit, and the second circuit is connected between the aluminum layer and the graphite layer. The battery damage detection method includes: when the second circuit is in a conducting state, detecting a second current of the second circuit; and determining whether the second insulating layer is damaged according to the second current.

[0034] In the solution provided by this embodiment, when the second insulating layer is damaged, the aluminum layer, the graphite layer and the second circuit form a loop, and the second circuit generates a second current. Based on the second current detected in the second circuit, the second insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection of soft-pack batteries due to subjective experience of detection personnel, and improving the detection accuracy of damage detection of soft-pack batteries. Furthermore, the second insulating layer is detected for damage in real time based on the second current, thereby avoiding the increase in safety risks of the soft-pack battery during use due to the failure to promptly discover the damage of the second insulating layer, and reducing the safety risks of the soft-pack battery during use.

[0035] Among them, in some optional embodiments, the detection circuit also includes a first circuit, the first circuit is connected between the tab and the aluminum layer, and the battery damage detection method also includes: when the first circuit is in an on state, detecting a first current of the first circuit; determining whether the first insulating layer is damaged based on the first current.

[0036] In the solution provided by this embodiment, when the first insulating layer is damaged, the tab, the aluminum layer and the first circuit form a loop, the first circuit generates a first current, and based on the detection of the first current of the first circuit, the first insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection for soft-pack batteries due to the subjective experience of detection personnel, and improving the detection accuracy of damage detection for soft-pack batteries.

[0037] In a third aspect, an embodiment of the present application provides a battery damage detection device, which is applied to a detection circuit for damage detection of a soft-pack battery. The soft-pack battery includes an aluminum-plastic film and a tab. The aluminum-plastic film includes a first insulating layer, an aluminum layer and a second insulating layer stacked in sequence. The first insulating layer is wrapped around the tab. The detection circuit includes a first circuit, which is connected between the tab and the aluminum layer. The battery damage detection device includes: a first current detection module, which is used to detect a first current in the first circuit when the first circuit is in a conducting state; and a first damage determination module, which is used to determine whether the first insulating layer is damaged according to the first current.

[0038] In a fourth aspect, an embodiment of the present application provides a battery damage detection device, which is applied to a detection circuit for damage detection of a soft-pack battery. The soft-pack battery includes an aluminum-plastic film, a pole ear and a graphite layer. The aluminum-plastic film includes a first insulating layer, an aluminum layer and a second insulating layer stacked in sequence. The first insulating layer is wrapped around the pole ear, and the graphite layer is wrapped around the side of the second insulating layer away from the pole ear. The detection circuit includes a second circuit, and the second circuit is connected between the aluminum layer and the graphite layer. The battery damage detection device includes: a second current detection module, which is used to detect a second current of the second circuit when the second circuit is in a conducting state; and a second damage determination module, which is used to determine whether the first insulating layer is damaged according to the second current.

[0039] In a fifth aspect, an embodiment of the present application provides a detection circuit, which includes a first circuit, the first circuit includes a first sub-circuit and a second sub-circuit, the first sub-circuit is connected to the positive pole tab of the soft-pack battery and the aluminum layer of the aluminum-plastic film of the soft-pack battery, the aluminum-plastic film also includes a first insulating layer and a second insulating layer, the first insulating layer, the aluminum layer and the second insulating layer are stacked in sequence, the first insulating layer is wrapped around the positive pole tab, and the first sub-circuit is used to determine whether the first insulating layer is damaged based on a first sub-current detected in the first sub-circuit; the second sub-circuit is connected to the negative pole tab and the aluminum layer of the soft-pack battery, and the second sub-circuit is used to determine whether the first insulating layer is damaged based on a second sub-current detected in the second sub-circuit.

[0040] Among them, in some optional embodiments, the soft-pack battery also includes a graphite layer, which is wrapped on the side of the second insulating layer away from the positive electrode ear, and the detection circuit also includes a second circuit, which is connected between the aluminum layer and the graphite layer, and the second circuit is used to determine whether the second insulating layer is damaged based on the second current detected in the second circuit.

[0041] In a sixth aspect, an embodiment of the present application provides an electronic device, the electronic device comprising: one or more processors, and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code comprises computer instructions, and one or more processors call the computer instructions to enable the electronic device to execute the battery damage detection method provided in the first aspect or the second aspect above.

[0042] In a seventh aspect, an embodiment of the present application provides an electronic device, the electronic device comprising the detection circuit provided in the fifth aspect above.

[0043] In an eighth aspect, an embodiment of the present application provides a chip system, which is applied to an electronic device. The chip system includes one or more processors, and the one or more processors are used to call computer instructions to enable the electronic device to execute the battery damage detection method provided in the first or second aspect above.

[0044] In some optional embodiments, the chip system also includes a memory, and the memory is connected to one or more processors through circuits or wires.

[0045] In some optional embodiments, the chip system also includes a communication interface.

[0046] In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium, which includes instructions. When the instructions are executed on an electronic device, the electronic device executes the battery damage detection method provided in the first or second aspect above.

[0047] In a tenth aspect, an embodiment of the present application provides a computer program product. When the computer program product is run on an electronic device, the electronic device executes the battery damage detection method provided in the first aspect or the second aspect above.

[0048] It can be understood that the beneficial effects of the third to tenth aspects mentioned above can be found in the relevant descriptions in the first or second aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0050] Figure 1 A schematic diagram of a scenario of a battery damage detection system provided in an embodiment of the present application is shown.

[0051] Figure 2 Shows Figure 1 A schematic diagram of the structure of the aluminum-plastic film in the soft-pack battery shown.

[0052] Figure 3 A schematic diagram of a flow chart of a battery damage detection method provided in an embodiment of the present application is shown.

[0053] Figure 4 A schematic diagram of a detection scenario of the first current in the battery damage detection method provided in an embodiment of the present application is shown.

[0054] Figure 5 A schematic diagram of a scenario flow of a battery damage detection method provided in an embodiment of the present application is shown.

[0055] Figure 6 Another schematic flow chart of a battery damage detection method provided in an embodiment of the present application is shown.

[0056] Figure 7 Another schematic flow chart of the battery damage detection method provided in the embodiment of the present application is shown.

[0057] Figure 8 A schematic diagram of a detection scenario of the second current in the battery damage detection method provided in an embodiment of the present application is shown.

[0058] Fig. 9 Another scenario flow diagram of the battery damage detection method provided in an embodiment of the present application is shown.

[0059] Fig.10 A schematic diagram of a detection scenario of a first sub-current, a second sub-current, and a second current in a battery damage detection method provided in an embodiment of the present application is shown.

[0060] Fig.11 A schematic cross-sectional structure diagram of a soft-pack battery in a battery damage detection method provided in an embodiment of the present application is shown.

[0061] Fig.12 Another schematic flow chart of the battery damage detection method provided in the embodiment of the present application is shown.

[0062] Fig.13 Another schematic flow chart of the battery damage detection method provided in the embodiment of the present application is shown.

[0063] Fig.14 A structural block diagram of a battery damage detection device provided in an embodiment of the present application is shown.

[0064] Fig.15 Another structural block diagram of a battery damage detection device provided in an embodiment of the present application is shown.

[0065] Fig.16 A structural diagram of a software system of an electronic device provided in an embodiment of the present application is shown.

[0066] Fig.17 A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application is shown.

[0067] Fig.18 A functional block diagram of an electronic device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0068] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0069] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0070] Soft-pack batteries are widely used in various electronic equipment products. Soft-pack batteries use aluminum-plastic film as the shell material, which is very easy to be damaged. Damaged soft-pack batteries have great safety hazards. Therefore, damage detection of soft-pack batteries is essential.

[0071] At present, the damage detection of soft-pack batteries mainly relies on the manual visual inspection of the soft-pack batteries by inspectors. The detection results are easily affected by the subjective experience of the inspectors, resulting in low detection accuracy of the damage detection of soft-pack batteries.

[0072] In view of the above problems, the embodiments of the present application provide a battery damage detection method, a detection circuit, an electronic device and a storage medium. The battery damage detection method is applied to a detection circuit for damage detection of a soft-pack battery. The soft-pack battery includes an aluminum-plastic film and a pole ear. The aluminum-plastic film includes a first insulating layer, an aluminum layer and a second insulating layer stacked in sequence. The first insulating layer is wrapped around the pole ear. The detection circuit includes a first circuit, and the first circuit is connected between the pole ear and the aluminum layer. The battery damage detection method includes: when the first circuit is in an on state, detecting a first current of the first circuit, and determining whether the first insulating layer is damaged according to the first current. When the first insulating layer is damaged, the pole ear, the aluminum layer and the first circuit form a loop, and the first circuit generates a first current. Based on the detection of the first current of the first circuit, the first insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection of the soft-pack battery due to the subjective experience of the detection personnel, and improving the detection accuracy of damage detection of the soft-pack battery.

[0073] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0074] See also Figure 1, which shows a schematic diagram of an application scenario of the battery damage detection system provided in an embodiment of the present application. The battery damage detection system may include a soft-pack battery 110 and a detection circuit 120. The detection circuit 120 is connected to the soft-pack battery 110. The detection circuit 120 can be used to detect damage to the soft-pack battery 110.

[0075] The soft-pack battery 110 may include an aluminum-plastic film 111 , a tab 112 and an electrolyte 113 . The aluminum-plastic film 111 is disposed on the tab 112 , and the electrolyte 113 is partially filled between the aluminum-plastic film 111 and the tab 112 .

[0076] The aluminum-plastic film 111 may include a first insulating layer 1111 , an aluminum layer 1112 and a second insulating layer 1113 stacked in sequence. The first insulating layer 1111 is wrapped around the tab 112 , and the electrolyte 113 is partially filled between the first insulating layer 1111 and the tab 112 .

[0077] The material of the first insulating layer 1111 has good chemical stability and electrolyte resistance. The first insulating layer 1111 is used to isolate the aluminum layer 1112 from contact with the electrolyte 113 to prevent the aluminum layer 1112 from being corroded by the electrolyte 113 .

[0078] The thickness of the first insulating layer 1111 is generally 25 micrometers (μm) to 65 μm. The material of the first insulating layer 1111 can be polypropylene (PP), polyethylene (PE), ethylene acrylic acid copolymer (EAA) or ion-cross-linked polymer resin, etc., which is not limited here.

[0079] The aluminum layer 1112 is used to prevent water vapor in the environment from penetrating into the inside of the soft-pack battery 110 . The thickness of the aluminum layer 1112 is generally 35 μm to 40 μm.

[0080] The material of the second insulating layer 1113 has good heat resistance, wear resistance, puncture resistance and bending resistance. The thickness of the second insulating layer 1113 is generally 15μm~25μm. The material of the second insulating layer 1113 can be polyester (Polyethylene Terephthalate, PET) or nylon (Polyamide, PA) without limitation here.

[0081] The tabs 112 may include a positive tab 1121 and a negative tab 1122 . The material of the positive tab 1121 is aluminum (Al), and the material of the negative tab 1122 is nickel (Ni) or nickel-plated copper (Ni—Cu).

[0082] The main components of the electrolyte 113 include polyvinyl alcohol (PVA), ionic liquid and lithium salt.

[0083] The detection circuit 120 may include a first circuit 121 . The first circuit 121 may be connected between the tab 112 and the aluminum layer 1112 . The first circuit 121 may be used to detect damage to the first insulating layer 1111 .

[0084] In some embodiments, the first circuit 121 can be provided with a first electronic switch 1211 and a first Hall current sensor 1212, and the first electronic switch 1211 and the first Hall current sensor 1212 are connected between the pole ear 112 and the aluminum layer 1112. The first electronic switch 1211 can be used to control the conduction or disconnection of the first circuit 121, and the first Hall current sensor 1212 can be used to perform current detection on the first circuit 121 when the first circuit 121 is in the on state.

[0085] The first circuit 121 may include a first subcircuit 1213 and a second subcircuit 1214. The first subcircuit 1213 may be connected between the positive electrode tab 1121 and the aluminum layer 1112, and the first subcircuit 1213 may be used to detect damage to the first insulating layer 1111. The second subcircuit 1214 may be connected between the negative electrode tab 1122 and the aluminum layer 1112, and the second subcircuit 1214 may be used to detect damage to the first insulating layer 1111.

[0086] The first electronic switch 1211 may include a first sub-electronic switch 12111 and a second sub-electronic switch 12112. The first sub-electronic switch 12111 may be disposed in the first sub-circuit 1213, and the first sub-electronic switch 12111 may be used to control the conduction or disconnection of the first sub-circuit 1213, and the first Hall current sensor 1212 may be used to detect the current of the first sub-circuit 1213 when the first sub-circuit 1213 is in the conduction state.

[0087] The second sub-electronic switch 12112 can be set in the second sub-circuit 1214, and the second sub-electronic switch 12112 can be used to control the conduction or disconnection of the second sub-circuit 1214. The first Hall current sensor 1212 can be used to detect the current of the second sub-circuit 1214 when the second sub-circuit 1214 is in the on state.

[0088] In some embodiments, the soft-pack battery 110 may further include a graphite layer 114 , and the detection circuit 120 may further include a second circuit 122 , the second circuit 122 is connected between the graphite layer 114 and the aluminum layer 1112 , and the second circuit 122 may be used to detect damage to the second insulating layer 1113 .

[0089] In some embodiments, the second circuit 122 can be provided with a second electronic switch 1221 and a second Hall current sensor 1222. The second electronic switch 1221 is connected between the graphite layer 114 and the second Hall current sensor 1222. The second Hall current sensor 1222 is also connected between the aluminum layer 1112. The second electronic switch 1221 can be used to control the conduction or disconnection of the second circuit 122. The second Hall current sensor 1222 can be used to perform current detection on the second circuit 122 when the second circuit 122 is in the on state.

[0090] In some embodiments, the second circuit 122 may also be provided with a voltage regulator 1223, which may be used to stabilize the voltage in the second circuit 122 to prevent voltage fluctuations in the second circuit 122 from damaging the soft-pack battery 110, thereby improving the stability of the soft-pack battery 110.

[0091] In one application scenario, such as Figure 2 As shown, the first insulating layer 1111 is a PP layer with a thickness of 30 μm, the aluminum layer 1112 has a thickness of 40 μm, and the second insulating layer 1113 is a nylon layer with a thickness of 25 μm.

[0092] See also Figure 3 , which shows a flow chart of a battery damage detection method provided by an embodiment of the present application. In a specific embodiment, the battery damage detection method can be applied to Figure 1 The detection circuit 120 in the battery damage detection system shown in FIG. 1 is taken as an example below. Figure 3 The process shown is described in detail, and the battery damage detection method may include the following steps S110 to S120.

[0093] Step S110: when the first circuit is in the on state, detecting a first current of the first circuit.

[0094] In an embodiment of the present application, when a user needs to perform damage detection on a soft-pack battery, a detection instruction can be sent to a controller in the detection circuit. The controller receives and responds to the detection instruction and detects the first current of the first circuit when the first circuit is in an on state.

[0095] Specifically, the first circuit may be provided with a first electronic switch and a first Hall current sensor, and the controller is communicatively connected to the first electronic switch and the first Hall current sensor, and performs data exchange with the first electronic switch and the first Hall current sensor.

[0096] When the user needs to perform damage detection on the soft-pack battery, a detection instruction can be sent to the controller. The controller receives and responds to the detection instruction, controls the first electronic switch to be in a closed state to put the first circuit in an on state, and when the first circuit is in the on state, controls the first Hall current sensor to perform current detection on the first circuit to obtain the first current. Based on the first electronic switch, the first circuit is controlled to be in an on state, and the first current is detected based on the first Hall current sensor, thereby improving the detection accuracy of the first current.

[0097] In some embodiments, the first circuit may include a first sub-circuit connected between the positive electrode tab and the aluminum layer, the first electronic switch may include a first sub-electronic switch, the first sub-electronic switch may be arranged in the first sub-circuit, and the first current may include a first sub-current.

[0098] When the user needs to perform damage detection on the soft-pack battery, a detection instruction can be sent to the controller. The controller receives and responds to the detection instruction, controls the first sub-electronic switch to close, so that the first sub-circuit is in the on state, and when the first sub-circuit is in the on state, controls the first Hall current sensor to perform current detection on the first sub-circuit to obtain the first sub-current. Based on the first sub-electronic switch, the first sub-circuit is controlled to be in the on state, and the first sub-current is detected based on the first Hall current sensor, thereby improving the detection accuracy of the first sub-current.

[0099] In some embodiments, the first circuit may further include a second sub-circuit connected between the negative electrode tab and the aluminum layer, the first electronic switch may include a second sub-electronic switch, the second sub-electronic switch may be arranged in the second sub-circuit, and the first current may include the second sub-current.

[0100] When the user needs to perform damage detection on the soft-pack battery, a detection instruction can be sent to the controller. The controller receives and responds to the detection instruction, controls the second sub-electronic switch to close, so that the second sub-circuit is in the on state, and when the second sub-circuit is in the on state, controls the first Hall current sensor to perform current detection on the second sub-circuit to obtain the second sub-current. Based on the second sub-electronic switch, the second sub-circuit is controlled to be in the on state, and the second sub-current is detected based on the first Hall current sensor, thereby improving the detection accuracy of the second sub-current.

[0101] In some embodiments, the controller may be provided with an input panel. When a user needs to perform damage detection on a soft-pack battery, the user may input a detection instruction on the input panel of the controller, for example, by handwriting the detection instruction on the input panel of the controller, or by pressing a button on the input panel of the controller. The controller receives the detection instruction through the input panel.

[0102] In some embodiments, the controller may be provided with a voice recognition module. When the user needs to perform damage detection on the soft-pack battery, the user may send a voice message within the voice collection range of the voice recognition module. The voice recognition module collects the voice message sent by the user, and performs voice recognition on the collected voice message to obtain a voice recognition result. When it is determined that the voice recognition result contains a keyword for indicating damage detection of the soft-pack battery, for example, the keyword is "damage detection soft-pack battery", and for another example, the keywords are "soft-pack battery" and "damage detection", etc., it is determined that the detection instruction has been received.

[0103] As an example, the voice message sent by the user is: perform damage detection on the soft-pack battery, and the voice recognition result of the voice recognition includes the keywords "soft-pack battery" and "damage detection", then it is determined that the detection instruction has been received.

[0104] In some embodiments, when a user needs to perform damage detection on a soft-pack battery, a detection instruction can be sent to a client, the client receives and responds to the detection instruction, forwards the detection instruction to a controller via a network, and the controller receives the detection instruction forwarded by the client.

[0105] The client is connected to the controller through a network and exchanges data with the controller through the network. The client can be any of a mobile client (for example, a mobile client, a PDA client, a Tablet PC client, a laptop client, a smart watch client, a smart bracelet client, or a wearable client) or a fixed client (for example, a desktop client, a smart panel client, etc.). The type of client is not limited here and can be set according to actual needs.

[0106] The network can be any of ZigBee network, Bluetooth (BT) network, Wireless Fidelity (Wi-Fi) network, Thread network, Long Range Radio (LoRa) network, Low-Power Wide-Area Network (LPWAN), Infrared network, Narrow Band Internet of Things (NB-IoT), Controller Area Network (CAN), Digital Living Network Alliance (DLNA) network, Wide Area Network (WAN), Local Area Network (LAN), Metropolitan Area Network (MAN) or Wireless Personal Area Network (WPAN), etc. The type of network is not limited here and can be set according to actual needs.

[0107] Step S120: determining whether the first insulating layer is damaged according to the first current.

[0108] In an embodiment of the present application, when the first circuit is in an on state, the controller can determine whether the first insulating layer is damaged based on the first current after detecting the first current of the first circuit. When the first insulating layer is damaged, the tab, the aluminum layer and the first circuit form a loop, and the first circuit generates a first current. Based on the detection of the first current of the first circuit, the first insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection for soft-pack batteries due to the subjective experience of the detection personnel, and improving the detection accuracy of damage detection for soft-pack batteries.

[0109] Specifically, when the first circuit is in an on state, the controller can calculate a first current change value of the first current within a first preset time period after detecting the first current of the first circuit, and determine whether the first insulating layer is damaged based on the first current change value and the first current change threshold. When the first insulating layer is damaged, a certain current change value can be detected in the first circuit, and the first insulating layer is judged to be damaged based on the change value of the first current, which is conducive to improving the accuracy of the judgment on the damage of the first insulating layer.

[0110] The first preset time period may be any time period. For example, the first preset time period may be from 9:01 to 9:05, which is not limited here.

[0111] The controller may calculate a current difference between a first current corresponding to an end time moment of the first preset time period and a first current corresponding to a start time moment, and determine the current difference as a first current change value of the first current.

[0112] The first current change threshold can be used to characterize the minimum current change value of the first current when the first insulating layer is damaged. The first current change threshold can be a current change value pre-set by the user, or it can be a current change value automatically generated by the controller according to the process of multiple damage detections on the soft-pack battery, etc., which is not limited here.

[0113] When the first current change value is greater than or equal to the first current change threshold, it is determined that the first insulating layer is damaged; when the first current change value is less than the first current change threshold, it is determined that the first insulating layer is not damaged.

[0114] As an example, Figure 4 As shown, the initial time t 1 The first current detected is 0, t 2 The first current detected at the moment is I 11 , t 3 The first current detected at the moment is I 12 , we can use t 1 Time to t 2 The current difference I in the time period at time 12 -I 11 As the first current change value △I 1 , or t 2 Time to t 3 The current difference I in the time period at time 13 -I 12 As the first current change value △I 1 .

[0115] In some embodiments, the first current may include a first sub-current, and the first current change value may include a first sub-current change value.

[0116] When the first sub-circuit is in the on state, the controller controls the first Hall current sensor to perform current detection on the first sub-circuit. After obtaining the first sub-current, the first sub-current change value of the first sub-current within the first preset time period can be calculated, and according to the first sub-current change value and the first current change threshold, it is determined whether the first insulating layer is damaged. When the first insulating layer is damaged, a certain current change value can be detected in the first sub-circuit, and the first insulating layer is judged to be damaged based on the change value of the first sub-current, which is conducive to improving the accuracy of the judgment on the damage of the first insulating layer.

[0117] The controller may calculate a current difference between a first sub-current corresponding to an end time moment and a first sub-current corresponding to a start time moment of the first preset time period, and determine the current difference as a first sub-current change value.

[0118] When the first sub-current change value is greater than or equal to the first current change threshold, it is determined that the first insulating layer is damaged; when the first sub-current change value is less than the first current change threshold, it is determined that the first insulating layer is not damaged.

[0119] In some implementations, the first current may further include a second sub-current, and the first current change value may further include a second sub-current change value.

[0120] When the second sub-circuit is in the on state, the controller controls the first Hall current sensor to perform current detection on the second sub-circuit. After obtaining the second sub-current, the second sub-current change value of the second sub-current within the first preset time period can be calculated, and according to the second sub-current change value and the first current change threshold, it is determined whether the first insulating layer is damaged. When the first insulating layer is damaged, a certain current change value can be detected in the second sub-circuit, and the first insulating layer is judged to be damaged based on the change value of the second sub-current, which is conducive to improving the accuracy of the judgment on the damage of the first insulating layer.

[0121] The controller may calculate a current difference between the second sub-current corresponding to the end time of the first preset time period and the second sub-current corresponding to the start time, and determine the current difference as the second sub-current change value.

[0122] When the second sub-current change value is greater than or equal to the first current change threshold, it is determined that the first insulating layer is damaged; when the second sub-current change value is less than the first current change threshold, it is determined that the first insulating layer is not damaged.

[0123] In some embodiments, when the controller determines that the first insulating layer is damaged based on the first current, a first warning message can be sent to the client so that the user can handle the soft-pack battery according to the first warning message to avoid the damaged soft-pack battery from being continued to be used, resulting in increased safety risks, which is conducive to reducing safety risks during the use of soft-pack batteries.

[0124] Among them, the first warning information can be used to remind the user to replace the soft-pack battery. The first warning information can be at least any one of a text warning information, a sound warning information or a light warning information. The type of the first warning information is not limited here and can be set according to actual needs.

[0125] In one application scenario, such as Figure 5 As shown, the battery damage detection method may include steps S210 to S230. It should be noted that: Figure 5 It is a combination Figure 1 The detection circuit given is used to schematically illustrate a battery damage detection method in an application scenario.

[0126] Step S210: controlling the first Hall current sensor to detect the current of the first sub-circuit to obtain the first sub-current, or controlling the first Hall current sensor to detect the current of the second sub-circuit to obtain the second sub-current.

[0127] Step S220 : determining whether the first insulating layer is damaged according to a first sub-current change value of the first sub-current and a second sub-current change value of the second sub-current.

[0128] When the first sub-current change value is greater than or equal to the first current change threshold, it is determined that the first insulating layer is damaged;

[0129] When the second sub-current change value is greater than or equal to the first current change threshold, it is determined that the first insulating layer is damaged;

[0130] When the first sub-current change value is greater than or equal to the first current change threshold, and the second sub-current change value is greater than or equal to the first current change threshold, it is determined that the first insulating layer is damaged;

[0131] When the first sub-current change value is smaller than the first current change threshold, and the second sub-current change value is smaller than the first current change threshold, it is determined that the first insulating layer is not damaged.

[0132] Step S230: When it is determined that the first insulating layer is damaged, a first warning message is sent to the client.

[0133] The solution provided by the present application detects a first current of the first circuit when the first circuit is in an on state, and determines whether the first insulating layer is damaged based on the first current. When the first insulating layer is damaged, the tab, the aluminum layer and the first circuit form a loop, and the first circuit generates a first current. Based on the detection of the first current of the first circuit, the first insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection for soft-pack batteries due to the subjective experience of detection personnel, and improving the detection accuracy of damage detection for soft-pack batteries.

[0134] See also Figure 6 , which shows a flow chart of a battery damage detection method provided by another embodiment of the present application. In a specific embodiment, the battery damage detection method can be applied to Figure 1 The detection circuit 120 in the battery damage detection system shown in FIG. 1 is taken as an example below. Figure 6 The process shown is described in detail, and the battery damage detection method may include the following steps S310 to S340.

[0135] Step S310: when the first circuit is in the on state, detecting a first current of the first circuit.

[0136] Step S320: determining whether the first insulating layer is damaged according to the first current.

[0137] In this embodiment, step S310 and step S320 may refer to the contents of the corresponding steps in the aforementioned embodiments, which will not be described in detail here.

[0138] Step S330: When it is determined that the first insulating layer is damaged, determine the damaged position of the first insulating layer.

[0139] In this embodiment, the electrolyte is partially filled between the pole ear and the first insulating layer. When the controller determines that the first insulating layer is damaged, the damaged position of the first insulating layer can be determined according to the first current change value. The damaged position of the first insulating layer may include an electrolyte contact position and a non-electrolyte contact position. When the damaged position of the first insulating layer is a non-electrolyte contact position, the aluminum layer contacts the pole ear, causing a short circuit, and the first current change value is large. Judging the damaged position of the first insulating layer according to the first current change value is conducive to improving the accuracy of judging the damaged position of the first insulating layer.

[0140] When the controller determines that the first insulating layer is damaged and the first current change value is greater than or equal to the second current change threshold, the damaged position of the first insulating layer is determined to be a non-electrolyte contact position; when the controller determines that the first insulating layer is damaged and the first current change value is less than the second current change threshold, the damaged position of the first insulating layer is determined to be an electrolyte contact position.

[0141] Among them, the second current change threshold is greater than the first current change threshold. The second current change threshold can be used to characterize the minimum current change value of the first current when the damaged position of the first insulating layer is a non-electrolyte contact position. The second current change threshold can be a current change value pre-set by the user, or it can be a current change value automatically generated by the controller according to the process of multiple damage detections of the soft-pack battery, etc., which is not limited here.

[0142] In some embodiments, the first current change value may include a first sub-current change value, and when the controller determines that the first insulating layer is damaged, the damaged position of the first insulating layer may be determined according to the first sub-current change value.

[0143] When the controller determines that the first insulating layer is damaged and the first sub-current change value is greater than or equal to the second current change threshold, the damaged position of the first insulating layer is determined to be a non-electrolyte contact position; when the controller determines that the first insulating layer is damaged and the first sub-current change value is less than the second current change threshold, the damaged position of the first insulating layer is determined to be an electrolyte contact position.

[0144] In some embodiments, the first current change value may include a second sub-current change value, and when the controller determines that the first insulating layer is damaged, the damaged position of the first insulating layer may be determined according to the second sub-current change value.

[0145] When the controller determines that the first insulating layer is damaged and the second sub-current change value is greater than or equal to the second current change threshold, the damaged position of the first insulating layer is determined to be a non-electrolyte contact position; when the controller determines that the first insulating layer is damaged and the second sub-current change value is less than the second current change threshold, the damaged position of the first insulating layer is determined to be an electrolyte contact position.

[0146] Step S340: When it is determined that the damaged position is a non-electrolyte contact position, the first circuit is controlled to switch to an open circuit state.

[0147] In this embodiment, when the controller determines that the damaged position of the first insulating layer is a non-electrolyte contact position, the first circuit can be controlled to switch to an open circuit state. When the damaged position of the first insulating layer is a non-electrolyte contact position, the aluminum layer contacts the pole ear and causes a short circuit, resulting in a great safety risk for the soft-pack battery. At this time, the first circuit is controlled to switch to an open circuit state, reducing the safety risk of the soft-pack battery.

[0148] The solution provided in this embodiment detects the first current of the first circuit when the first circuit is in the on state, and determines whether the first insulating layer is damaged based on the first current, and when it is determined that the first insulating layer is damaged, determines the damaged position of the first insulating layer, and when it is determined that the damaged position is a non-electrolyte contact position, controls the first circuit to switch to an open circuit state. When the damaged position of the first insulating layer is a non-electrolyte contact position, the aluminum layer contacts the pole ear, causing a short circuit, resulting in a great safety risk for the soft-pack battery. At this time, the first circuit is controlled to switch to the open circuit state, reducing the safety risk of the soft-pack battery.

[0149] See also Figure 7 , which shows a flow chart of a battery damage detection method provided by another embodiment of the present application. In a specific embodiment, the battery damage detection method can be applied to Figure 1 The detection circuit 120 in the battery damage detection system shown in FIG. 1 is taken as an example below. Figure 7 The process shown is described in detail, and the battery damage detection method may include the following steps S410 to S440.

[0150] Step S410: when the first circuit is in the on state, detecting a first current of the first circuit.

[0151] Step S420: determining whether the first insulating layer is damaged according to the first current.

[0152] In this embodiment, step S410 and step S420 may refer to the contents of the corresponding steps in the aforementioned embodiments, which will not be described in detail here.

[0153] Step S430: when the second circuit is in the on state, detecting a second current of the second circuit.

[0154] In this embodiment, the soft-pack battery may further include a graphite layer, which is wrapped around a side of the second insulating layer away from the tab and serves as a shell of the soft-pack battery. The detection circuit may further include a second circuit, which may be connected between the aluminum layer and the graphite layer. When the second circuit is in a conducting state, the controller may detect a second current of the second circuit.

[0155] Specifically, the second circuit is provided with a second electronic switch and a second Hall current sensor. The controller can control the second electronic switch to be in a closed state so that the second circuit is in an on state, and when the second circuit is in the on state, control the second Hall current sensor to perform current detection on the second circuit to obtain the second current. Based on the second electronic switch, the second circuit is controlled to be in an on state, and the second current is detected based on the second Hall current sensor, thereby improving the detection accuracy of the second current.

[0156] Step S440: determining whether the second insulating layer is damaged according to the second current.

[0157] In this embodiment, when the second circuit is in the on state, the controller can determine whether the second insulating layer is damaged according to the second current after detecting the second current of the second circuit. When the second insulating layer is damaged, the aluminum layer, the graphite layer and the second circuit form a loop, and the second circuit generates a second current. Based on the second current detected in the second circuit, the second insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection of soft-pack batteries due to subjective experience of detection personnel, and improving the detection accuracy of damage detection of soft-pack batteries. Furthermore, the second insulating layer is detected for damage in real time according to the second current, thereby avoiding the increase of safety risks of the soft-pack battery during use due to the failure to timely discover the damage of the second insulating layer, and reducing the safety risks of the soft-pack battery during use.

[0158] Specifically, when the second circuit is in the on state, the controller can calculate the second current change value of the second current within a second preset time period after detecting the second current of the second circuit, and determine whether the second insulating layer is damaged based on the second current change value and the third current change threshold. When the second insulating layer is damaged, the second circuit can detect a certain current change value, and judge the damage of the second insulating layer based on the change value of the second current, which is conducive to improving the accuracy of judging the damage of the second insulating layer.

[0159] The second preset time period may be any time period. For example, the second preset time period may be between 16:10 and 16:25, which is not limited here.

[0160] The controller may calculate a current difference between the second current corresponding to an end time moment and a start time moment of the second preset time period, and determine the current difference as a second current change value of the second current.

[0161] The third current change threshold can be used to characterize the minimum current change value of the second current when the second insulating layer is damaged. The third current change threshold can be a current change value pre-set by the user, or it can be a current change value automatically generated by the controller based on multiple damage detection processes of the soft-pack battery, etc., which is not limited here.

[0162] When the second current change value is greater than or equal to the third current change threshold, it is determined that the second insulating layer is damaged; when the second current change value is less than the third current change threshold, it is determined that the second insulating layer is not damaged.

[0163] As an example, Figure 8 As shown, the starting time of the second preset time period is recorded as time 0, and the second current is detected to be I at time 0. 21 , the moment when the arbitrary set time length has passed is recorded as the end time of the second preset time period, and the second current is detected to be I at the end time. 22 , the current difference I from time 0 to the end time can be 22 -I 21 As the second current change value △I 2 .

[0164] In some embodiments, when the controller determines that the second insulating layer is damaged based on the second current, a second warning message can be sent to the client so that the user can handle the soft-pack battery according to the second warning message to avoid the damaged soft-pack battery from being continued to be used, resulting in increased safety risks, which is conducive to reducing safety risks during the use of soft-pack batteries.

[0165] Among them, the second warning information can be used to remind the user to replace the soft-pack battery. The second warning information can be at least any one of a text warning information, a sound warning information or a light warning information. The type of the second warning information is not limited here and can be set according to actual needs.

[0166] In one application scenario, the first insulating layer is a PP layer, the second insulating layer is a nylon layer, the positive electrode ear is an aluminum ear, and the negative electrode ear is a nickel ear. Fig. 9 As shown, the battery damage detection method may include steps S510 to S550. It should be noted that: Fig. 9 It is a combination Figure 1 The detection circuit given is used to schematically illustrate a battery damage detection method in an application scenario.

[0167] Step S510: controlling the first sub-electronic switch to close, and controlling the first Hall current sensor to detect the current of the first sub-circuit to obtain the first sub-current.

[0168] Step S520: controlling the second sub-electronic switch to close, and controlling the first Hall current sensor to detect the current of the second sub-circuit to obtain a second sub-current.

[0169] Step S530: controlling the second electronic switch to close, and controlling the second Hall current sensor to detect the current of the second circuit to obtain a second current.

[0170] Step S540: judging whether the PP layer is damaged and / or whether the nylon layer is damaged according to the first sub-current change value of the first sub-current, the second sub-current change value of the second sub-current and the second current change value of the second current.

[0171] Specifically, the first sub-current, the second sub-current and the second current detected at different times may be recorded respectively, such as Fig.10 As shown, the first sub-current change value can be calculated according to the first sub-current detected at different times, the second sub-current change value can be calculated according to the second sub-current detected at different times, and the second current change value can be calculated according to the second current detected at different times.

[0172] When the first sub-current change value is greater than or equal to the first current change threshold, and the second current change value is greater than or equal to the third current change threshold, it is determined that the PP layer is damaged and the nylon layer is damaged;

[0173] When the first sub-current change value is greater than or equal to the first current change threshold, and the second current change value is less than the third current change threshold, it is determined that the PP layer is damaged and the nylon layer is not damaged;

[0174] When the first sub-current change value is less than the first current change threshold, and the second current change value is greater than or equal to the third current change threshold, it is determined that the PP layer is not damaged and the nylon layer is damaged;

[0175] When the first sub-current change value is less than the first current change threshold, and the second current change value is less than the third current change threshold, it is determined that the PP layer is not damaged and the nylon layer is not damaged;

[0176] When the second sub-current change value is greater than or equal to the first current change threshold, and the second current change value is greater than or equal to the third current change threshold, it is determined that the PP layer is damaged and the nylon layer is damaged;

[0177] When the second sub-current change value is greater than or equal to the first current change threshold, and the second current change value is less than the third current change threshold, it is determined that the PP layer is damaged and the nylon layer is not damaged;

[0178] When the second sub-current change value is less than the first current change threshold, and the second current change value is greater than or equal to the third current change threshold, it is determined that the PP layer is not damaged and the nylon layer is damaged;

[0179] When the second sub-current change value is less than the first current change threshold, and the second current change value is less than the third current change threshold, it is determined that the PP layer is not damaged and the nylon layer is not damaged;

[0180] When the first sub-current change value is greater than or equal to the first current change threshold, and the second sub-current change value is greater than or equal to the first current change threshold, and the second current change value is greater than or equal to the third current change threshold, it is determined that the PP layer is damaged and the nylon layer is damaged;

[0181] When the first sub-current change value is greater than or equal to the first current change threshold, and the second sub-current change value is greater than or equal to the first current change threshold, and the second current change value is less than the third current change threshold, it is determined that the PP layer is damaged and the nylon layer is not damaged;

[0182] When the first sub-current change value is less than the first current change threshold, and the second sub-current change value is less than the first current change threshold, and the second current change value is greater than or equal to the third current change threshold, it is determined that the PP layer is not damaged and the nylon layer is damaged;

[0183] When the first sub-current change value is less than the first current change threshold, and the second sub-current change value is less than the first current change threshold, and the second current change value is less than the third current change threshold, it is determined that the PP layer is not damaged and the nylon layer is not damaged.

[0184] Step S550: When it is determined that the PP layer is damaged and / or the nylon layer is damaged, a third warning message is sent to the client.

[0185] When it is determined that the PP layer is damaged and the nylon layer is damaged, the third warning information includes the first warning information and the second warning information;

[0186] When it is determined that the PP layer is damaged and the nylon layer is not damaged, the third warning information includes the first warning information;

[0187] When it is determined that the PP layer is not damaged and the nylon layer is damaged, the third warning information includes the second warning information.

[0188] The above process can further determine the PP layer damage position according to the first sub-current change value and / or the second sub-current change value when determining that the PP layer is damaged.

[0189] When the first sub-current change value is greater than or equal to the first current change threshold, and the first sub-current change value is less than the second current change threshold, the PP layer damage position is determined to be the electrolyte contact position, such as Fig.11 The first PP layer position in;

[0190] When the second sub-current change value is greater than or equal to the first current change threshold, and the second sub-current change value is less than the second current change threshold, determining that the PP layer damage position is the first PP layer position;

[0191] When the first sub-current change value is greater than or equal to the second current change threshold, it is determined that the PP layer damage position is a non-electrolyte contact position, such as Fig.11 The position of the second PP layer in;

[0192] When the second sub-current change value is greater than or equal to the second current change threshold, determining the PP layer damage position as the second PP layer position;

[0193] When the first sub-current change value is greater than or equal to the first current change threshold, and the first sub-current change value is less than the second current change threshold, and the second sub-current change value is greater than or equal to the second current change threshold, the PP layer damage position is determined to be the first PP layer position and the second PP layer position;

[0194] When the second sub-current change value is greater than or equal to the first current change threshold, and the second sub-current change value is less than the second current change threshold, and the first sub-current change value is greater than or equal to the second current change threshold, the PP layer damage position is determined to be the first PP layer position and the second PP layer position.

[0195] The solution provided in this embodiment detects a first current of the first circuit when the first circuit is in an on state, and determines whether the first insulating layer is damaged based on the first current; and detects a second current of the second circuit when the second circuit is in an on state, and determines whether the second insulating layer is damaged based on the second current. When the first insulating layer is damaged, the tab, the aluminum layer and the first circuit form a loop, and the first circuit generates a first current. Based on the detection of the first current of the first circuit, the first insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection for soft-pack batteries due to the subjective experience of detection personnel, and improving the detection accuracy of damage detection for soft-pack batteries.

[0196] Furthermore, when the second insulating layer is damaged, the aluminum layer, the graphite layer and the second circuit form a loop, and the second circuit generates a second current. Based on the detection of the second current of the second circuit, the second insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection for soft-pack batteries due to the subjective experience of detection personnel, and improving the detection accuracy of damage detection for soft-pack batteries.

[0197] Furthermore, the second insulating layer is detected for damage in real time according to the second current, thereby avoiding the increase in the safety risk of the soft-pack battery during use due to the failure to discover the damage of the second insulating layer in time, and reducing the safety risk of the soft-pack battery during use.

[0198] See also Fig.12 , which shows a flow chart of a battery damage detection method provided by another embodiment of the present application. In a specific embodiment, the battery damage detection method can be applied to Figure 1 The detection circuit 120 in the battery damage detection system shown in FIG. 1 is taken as an example below. Fig.12 The process shown is described in detail, and the battery damage detection method may include the following steps S610 to S620.

[0199] Step S610: when the second circuit is in the on state, detecting a second current of the second circuit.

[0200] In this embodiment, the second circuit is provided with a second electronic switch and a second Hall current sensor. When the user needs to perform damage detection on the soft-pack battery, a detection instruction can be sent to the controller. The controller receives and responds to the detection instruction, controls the second electronic switch to be in a closed state, so that the second circuit is in a conductive state, and when the second circuit is in the conductive state, controls the second Hall current sensor to perform current detection on the second circuit to obtain the second current. Based on the second electronic switch, the second circuit is controlled to be in a conductive state, and the second current is detected based on the second Hall current sensor, thereby improving the detection accuracy of the second current.

[0201] Step S620: determining whether the second insulating layer is damaged according to the second current.

[0202] In this embodiment, when the second circuit is in the on state, the electronic device can determine whether the second insulating layer is damaged according to the second current after detecting the second current of the second circuit. When the second insulating layer is damaged, the aluminum layer, the graphite layer and the second circuit form a loop, and the second circuit generates a second current. Based on the detection of the second current of the second circuit, the second insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection of soft-pack batteries due to subjective experience of detection personnel, and improving the detection accuracy of damage detection of soft-pack batteries. Furthermore, the second insulating layer is detected for damage in real time according to the second current, thereby avoiding the increase of safety risks of soft-pack batteries during use due to failure to timely discover damage to the second insulating layer, and reducing the safety risks of soft-pack batteries during use.

[0203] The solution provided in this embodiment detects the second current of the second circuit when the second circuit is in the on state, and determines whether the second insulating layer is damaged based on the second current. When the second insulating layer is damaged, the aluminum layer, the graphite layer and the second circuit form a loop, and the second circuit generates a second current. Based on the second current detected in the second circuit, the second insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection for soft-pack batteries due to subjective experience of detection personnel, and improving the detection accuracy of damage detection for soft-pack batteries. Furthermore, the second insulating layer is detected for damage in real time based on the second current, thereby avoiding the increase in safety risks of the soft-pack battery during use due to the failure to timely discover the damage of the second insulating layer, and reducing the safety risks of the soft-pack battery during use.

[0204] See also Fig.13 , which shows a flow chart of a battery damage detection method provided by another embodiment of the present application. In a specific embodiment, the battery damage detection method can be applied to Figure 1 The detection circuit 120 in the battery damage detection system shown in FIG. 1 is taken as an example below. Fig.13 The process shown is described in detail, and the battery damage detection method may include the following steps S710 to S740.

[0205] Step S710: when the second circuit is in the on state, detecting a second current of the second circuit.

[0206] Step S720: determining whether the second insulating layer is damaged according to the second current.

[0207] In this embodiment, step S710 and step S720 may refer to the contents of the corresponding steps in the aforementioned embodiments, which will not be described in detail here.

[0208] Step S730: When the first circuit is in the on state, detecting a first current of the first circuit.

[0209] In this embodiment, the first circuit can be provided with a first electronic switch and a first Hall current sensor. The controller can control the first electronic switch to be in a closed state so that the first circuit is in an on state, and when the first circuit is in the on state, control the first Hall current sensor to perform current detection on the first circuit to obtain the first current. Based on the first electronic switch controlling the first circuit to be in the on state, and based on the first Hall current sensor detecting the first current, the detection accuracy of the first current is improved.

[0210] Step S740: determining whether the first insulating layer is damaged according to the first current.

[0211] In this embodiment, when the first circuit is in an on state, the controller can determine whether the first insulating layer is damaged based on the first current after detecting the first current of the first circuit. When the first insulating layer is damaged, the tab, the aluminum layer and the first circuit form a loop, and the first circuit generates a first current. Based on the detection of the first current of the first circuit, the first insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection for soft-pack batteries due to the subjective experience of detection personnel, and improving the detection accuracy of damage detection for soft-pack batteries.

[0212] The solution provided in this embodiment detects the second current of the second circuit when the second circuit is in an on state, and determines whether the second insulating layer is damaged based on the second current; and detects the first current of the first circuit when the first circuit is in an on state, and determines whether the first insulating layer is damaged based on the first current. When the second insulating layer is damaged, the aluminum layer, the graphite layer and the second circuit form a loop, and the second circuit generates a second current. Based on the detection of the second current of the second circuit, the second insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection for soft-pack batteries due to the subjective experience of detection personnel, and improving the detection accuracy of damage detection for soft-pack batteries.

[0213] Furthermore, the second insulating layer is detected for damage in real time according to the second current, thereby avoiding the increase in the safety risk of the soft-pack battery during use due to the failure to discover the damage of the second insulating layer in time, and reducing the safety risk of the soft-pack battery during use.

[0214] Furthermore, when the first insulating layer is damaged, the tab, the aluminum layer and the first circuit form a loop, the first circuit generates a first current, and based on the detection of the first current of the first circuit, the first insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection for soft-pack batteries due to the subjective experience of detection personnel, and improving the detection accuracy of damage detection for soft-pack batteries.

[0215] See also Fig.14 , which shows a battery damage detection device 800 provided by an embodiment of the present application. The battery damage detection device 800 can be applied to Figure 1 The detection circuit 120 in the battery damage detection system shown in FIG. 1 is taken as an example below. Fig.14 The battery damage detection device 800 shown is described in detail. The battery damage detection device 800 may include a first current detection module 810 and a first damage determination module 820.

[0216] The first current detection module 810 may be used to detect a first current of the first circuit when the first circuit is in an on state; the first damage determination module 820 may be used to determine whether the first insulating layer is damaged according to the first current.

[0217] In some embodiments, the first damage determination module 820 may further include a first determination unit and a second determination unit.

[0218] The first determination unit can be used to determine that the first insulating layer is damaged when the first current change value of the first current is greater than or equal to the first current change threshold, and the first current change value can be calculated based on the first current detected at different times; the second determination unit can be used to determine that the first insulating layer is not damaged when the first current change value of the first current is less than the first current change threshold.

[0219] In some embodiments, the first circuit may be provided with a first electronic switch and a first Hall current sensor, and the battery damage detection device 800 may further include a first control module.

[0220] The first control module may be configured to control the first electronic switch to be in a closed state when the first circuit is in an on state and before the first current detection module 810 detects the first current of the first circuit, so as to put the first circuit in an on state.

[0221] In some embodiments, the first current detection module 810 may include a first detection unit.

[0222] The first detection unit can be used to control the first Hall current sensor to perform current detection on the first circuit to obtain the first current when the first circuit is in the on state.

[0223] In some embodiments, the tab may include a positive tab, the first circuit may include a first sub-circuit, the first sub-circuit may be connected between the positive tab and the aluminum layer, the first electronic switch may include a first sub-electronic switch, the first sub-electronic switch may be arranged in the first sub-circuit, and the first current may include a first sub-current; the first control module may include a first control unit.

[0224] The first control unit may be used to control the first sub-electronic switch to be in a closed state, so that the first sub-circuit is in a conducting state.

[0225] In some embodiments, the first detection unit may include a first detection subunit.

[0226] The first detection subunit may be used to control the first Hall current sensor to perform current detection on the first subcircuit to obtain a first sub-current when the first subcircuit is in an on state.

[0227] In some embodiments, the first damage determination module 820 may include a third determination unit and a fourth determination unit.

[0228] The third determination unit can be used to determine that the first insulating layer is damaged when the first sub-current change value of the first sub-current is greater than or equal to the first current change threshold, and the first sub-current change value is calculated based on the first sub-current detected at different times; the fourth determination unit can be used to determine that the first insulating layer is not damaged when the first sub-current change value of the first sub-current is less than the first current change threshold.

[0229] In some embodiments, the tab may include a negative tab, the first circuit may include a second sub-circuit, the second sub-circuit may be connected between the negative tab and the aluminum layer, the first electronic switch may include a second sub-electronic switch, the second sub-electronic switch may be arranged in the second sub-circuit, and the first current may include the second sub-current; the first control module may also include a second control unit.

[0230] The second control unit may be used to control the second sub-electronic switch to be in a closed state, so that the second sub-circuit is in a conducting state.

[0231] In some embodiments, the first detection unit may further include a second detection subunit.

[0232] The second detection subunit may be used to control the first Hall current sensor to perform current detection on the second subcircuit to obtain a second sub-current when the second subcircuit is in the on state.

[0233] In some implementations, the first damage determination module 820 may further include a fifth determination unit and a sixth determination unit.

[0234] The fifth determination unit can be used to determine that the first insulating layer is damaged when the second sub-current change value of the second sub-current is greater than or equal to the first current change threshold; the sixth determination unit can be used to determine that the first insulating layer is not damaged when the second sub-current change value of the second sub-current is less than the first current change threshold.

[0235] In some embodiments, the soft-pack battery may further include an electrolyte, and the electrolyte may be partially filled between the tab and the first insulating layer. The battery damage detection device 800 may further include a position determination module and a second control module.

[0236] The position determination module can be used to determine the damaged position of the first insulating layer when it is determined that the first insulating layer is damaged; the second control module can be used to control the first circuit to switch to an open circuit state when it is determined that the damaged position is a non-electrolyte contact position.

[0237] In some implementations, the location determination module may include a seventh determination unit and an eighth determination unit.

[0238] The seventh determination unit can be used to determine that the damaged position is a non-electrolyte contact position when it is determined that the first insulating layer is damaged and the first current change value is greater than or equal to the second current change threshold, and the second current change threshold can be greater than the first current change threshold; the eighth determination unit can be used to determine that the internal damaged position is an electrolyte contact position when it is determined that the first insulating layer is damaged and the first current change value is less than the second current change threshold.

[0239] In some embodiments, the battery damage detection device 800 may further include a first sending module.

[0240] The first sending module can be used to send a first warning message to the client when it is determined that the first insulating layer is damaged according to the first current.

[0241] In some embodiments, the soft-pack battery may further include a graphite layer, which may be wrapped on a side of the second insulating layer away from the pole ear. The electronic device may further include a second circuit, which may be connected between the aluminum layer and the graphite layer. The battery damage detection device 800 may further include a second current detection module and a second damage determination module.

[0242] The second current detection module may be used to detect a second current of the second circuit when the second circuit is in an on state; the second damage determination module may be used to determine whether the second insulating layer is damaged according to the second current.

[0243] In some implementations, the second damage determination module may include a ninth determination unit and a tenth determination unit.

[0244] The ninth determination unit can be used to determine that the second insulation layer is damaged when the second current change value of the second current is greater than or equal to the third current change threshold, and the second current change value can be calculated based on the second current detected at different times; the tenth determination unit can be used to determine that the second insulation layer is not damaged when the second current change value of the second current is less than the third current change threshold.

[0245] In some embodiments, the second circuit may be provided with a second electronic switch and a second Hall current sensor, and the battery damage detection device 800 may further include a third control module.

[0246] The third control module may be configured to control the second electronic switch to be in a closed state when the second circuit is in an on state and before the second current detection module detects the second current of the second circuit, so as to put the second circuit in an on state.

[0247] In some embodiments, the second current detection module may include a second detection unit.

[0248] The second detection unit can be used to control the second Hall current sensor to perform current detection on the second circuit to obtain a second current when the second circuit is in a conducting state.

[0249] In some embodiments, the battery damage detection device 800 may further include a second sending module.

[0250] The second sending module can be used to send a second warning message to the client when it is determined that the second insulating layer is damaged according to the second current.

[0251] The solution provided in this embodiment detects the first current of the first circuit when the first circuit is in an on state, and determines whether the first insulating layer is damaged based on the first current. When the first insulating layer is damaged, the tab, the aluminum layer and the first circuit form a loop, and the first circuit generates a first current. Based on the detection of the first current of the first circuit, the first insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection for soft-pack batteries due to the subjective experience of detection personnel, and improving the detection accuracy of damage detection for soft-pack batteries.

[0252] See also Fig.15 , which shows a battery damage detection device 900 provided in an embodiment of the present application. The battery damage detection device 900 can be applied to Figure 1 The detection circuit 120 in the battery damage detection system shown in FIG. 1 is taken as an example below. Fig.15 The battery damage detection device 900 shown is described in detail. The battery damage detection device 900 may include a second current detection module 910 and a second damage determination module 920 .

[0253] The second current detection module 910 may be used to detect a second current of the second circuit when the second circuit is in a conducting state; the second damage determination module 920 may be used to determine whether the second insulating layer is damaged according to the second current.

[0254] In some embodiments, the battery damage detection device 900 may further include a first current detection module and a first damage determination module.

[0255] The first current detection module may be used to detect a first current of the first circuit when the first circuit is in an on state; the first damage determination module may be used to determine whether the first insulating layer is damaged according to the first current.

[0256] The solution provided in this embodiment detects the second current of the second circuit when the second circuit is in the on state, and determines whether the second insulating layer is damaged based on the second current. When the second insulating layer is damaged, the aluminum layer, the graphite layer and the second circuit form a loop, and the second circuit generates a second current. Based on the second current detected in the second circuit, the second insulating layer is detected for damage, thereby avoiding the problem of low detection accuracy of damage detection for soft-pack batteries due to subjective experience of detection personnel, and improving the detection accuracy of damage detection for soft-pack batteries. Furthermore, the second insulating layer is detected for damage in real time based on the second current, thereby avoiding the increase in safety risks of the soft-pack battery during use due to the failure to timely discover the damage of the second insulating layer, and reducing the safety risks of the soft-pack battery during use.

[0257] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. Any processing method described in the method embodiment can be implemented by the corresponding processing module in the device embodiment, and will not be repeated one by one in the device embodiment.

[0258] In addition, each functional module in each embodiment of the present application can be integrated into a processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or software functional modules.

[0259] The battery damage detection method provided in the embodiment of the present application can be applied to electronic devices including a battery damage detection system. The electronic devices can include various terminal devices, which can also be called terminals, user equipment (UE), mobile stations (MS), mobile terminals (MT), etc.

[0260] The terminal device may be a mobile phone, a sweeping robot, a drone, a smart TV, a wearable device, a PDA, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The type of terminal device is not limited here, and it can be set according to actual needs.

[0261] The software system of the electronic device may adopt a layered architecture, an event-driven architecture, a micro-core architecture, a micro-service architecture, or a cloud architecture. The embodiment of the present application takes the Android system of the layered architecture as an example to illustrate the software structure of the electronic device.

[0262] See also Fig.16 , which shows a schematic diagram of the structure of the software system of an electronic device provided by an embodiment of the present application. The software system includes several layers, each layer has a clear role and division of labor, and the layers communicate with each other through software interfaces. In some embodiments, the Android system is divided into four layers, namely, the application layer, the application framework layer, the system library, and the kernel layer from top to bottom.

[0263] The application layer may include a series of applications. For example, the application layer may include a camera application, a gallery application, a call application, a wireless local area network (Wireless Local Area Networks, WLAN) application, a video application, a media provider (MediaProvider) application, a user space file system (Filesystem in Userspace, FUSE) application, etc.

[0264] The media provider is used to create multimedia files in FUSE or access multimedia files in FUSE. Each application in the application layer can create multimedia files in FUSE through the media provider MediaProvider or access multimedia files in FUSE through the media provider MediaProvider.

[0265] FUSE is used to store the multimedia files that the media provider creates. Of course, in other embodiments, FUSE also can be used to store other data.

[0266] The application framework layer provides an application programming interface (API) and a programming framework for the applications in the application layer. The application framework layer includes some predefined functions. For example, the application framework layer may include a window manager, a content provider, a resource manager, and a view system.

[0267] The window manager is used to manage window programs. The window manager can obtain the display screen size, determine whether there is a status bar, lock the screen, capture the screen, etc.

[0268] Content providers are used to store and retrieve data and make it accessible to applications. The data can include videos, images, audio, calls made and received, browsing history and bookmarks, phone books, etc.

[0269] The view system includes visual controls, such as controls for displaying text, controls for displaying images, etc. The view system can be used to build applications. A display interface can be composed of one or more views. For example, a display interface including a text notification icon can include a view for displaying text and a view for displaying images.

[0270] The resource manager provides various resources for applications, such as localized strings, icons, images, layout files, video files, and so on.

[0271] System libraries may include Surface Manager, Media Libraries, Android Rruntime, etc.

[0272] The Android runtime consists of a core library and a virtual machine. The Android runtime is responsible for scheduling and management of the Android system. The core library consists of two parts: one is the function that the Java language needs to call, and the other is the Android core library. The application layer and the application framework layer run in the virtual machine. The virtual machine executes the Java files of the application layer and the application framework layer as binary files. The virtual machine is used to perform object life cycle management, stack management, thread management, security and exception management, and garbage collection.

[0273] The surface manager is used to manage the display subsystem and provide the fusion of 2D and 3D layers for multiple applications.

[0274] The media library supports playback and recording of a variety of commonly used audio and video formats, as well as static image files, etc. The media library can support a variety of audio and video encoding formats, such as MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, etc.

[0275] The kernel layer may include modules such as camera driver, display driver, Wi-Fi driver, Bluetooth driver, and audio driver.

[0276] Understandably, Fig.16 The layers in the software structure shown and the components contained in each layer do not constitute a specific limitation on the electronic device. In other embodiments of the present application, the electronic device may include more or fewer layers than shown in the figure, and each layer may include more or fewer components, which is not limited in the present application.

[0277] See also Fig.17 , which shows a hardware structure diagram of an electronic device 1000 provided by an embodiment of the present application. Fig.17 As shown, the electronic device 1000 may include a processor 1010, an external memory interface 1020, an internal memory 1021, a Universal Serial Bus (USB) interface 1030, a charging management module 1040, a power management module 1041, a battery 1042, an antenna 1, an antenna 2, a mobile communication module 1050, a wireless communication module 1060, an audio module 1070, a speaker 1070A, a receiver 1070B, a microphone 1070C, an earphone interface 1070D, a sensor module 1080, a button 1090, a motor 1091, an indicator 1092, a camera 1093, a display screen 1094, and a Subscriber Identification Module (SIM) card interface 1095, etc. Among them, the sensor module 1080 may include a pressure sensor 1080A, a gyroscope sensor 1080B, an air pressure sensor 1080C, a magnetic sensor 1080D, an acceleration sensor 1080E, a distance sensor 1080F, a proximity light sensor 1080G, a fingerprint sensor 1080H, a temperature sensor 1080J, a touch sensor 1080K, an ambient light sensor 1080L, a bone conduction sensor 1080M, etc.

[0278] It is understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the electronic device 1000. In other embodiments of the present application, the electronic device 1000 may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0279] For example, Fig.17 The processor 1010 shown may include one or more processing units, for example, the processor 1010 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a memory, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processor (NPU), etc. Among them, different processing units may be independent devices or integrated in one or more processors.

[0280] The controller may be the nerve center and command center of the electronic device 1000. The controller may generate an operation control signal according to the instruction operation code and the timing signal to complete the control of fetching and executing instructions.

[0281] The processor 1010 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the processor 1010 is a cache memory. The memory may store instructions or data that the processor 1010 has just used or cyclically used. If the processor 1010 needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the processor 1010, and thus improves the efficiency of the system.

[0282] In some embodiments, the processor 1010 may include one or more interfaces. The interface may include an Inter-Integrated Circuit (I2C) interface, an Inter-Integrated Circuit Sound (I2S) interface, a Pulse Code Modulation (PCM) interface, a Universal Asynchronous Receiver / Transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a General Purpose Input / Output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and / or a Universal Serial Bbus (USB) interface, etc.

[0283] The external memory interface 1020 may be used to connect an external memory card, such as a Secure Digital (SD) card, to expand the storage capacity of the electronic device 1000. The external memory card communicates with the processor 1010 via the external memory interface 1020 to implement a data storage function.

[0284] The internal memory 1021 can be used to store computer executable program codes, and the executable program codes include instructions. The processor 1010 executes various functional applications and data processing of the electronic device 1000 by running the instructions stored in the internal memory 1021. The internal memory 1021 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system, an application required for at least one function (such as an image capture function, a video recording function, etc.), etc. The data storage area may store data (such as image data, video data, etc.) created during the use of the electronic device 1000, etc. In addition, the internal memory 1021 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (Universal Flash Storage, UFS), etc.

[0285] It is understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the electronic device 1000. In other embodiments of the present application, the electronic device 1000 may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0286] See also Fig.18 , which shows a functional block diagram of an electronic device 1100 according to an embodiment of the present application. Fig.18 As shown, the electronic device 1100 includes: one or more processors 1110 ( Fig.18 Only one processor is shown in the figure) and a memory 1120, the memory 1120 is coupled to one or more processors 1110, the memory 1120 is used to store computer program code 1130, the computer program code 1130 includes computer instructions, and one or more processors 1110 call the computer instructions to enable the electronic device 1100 to implement the steps in any one of the above methods.

[0287] Those skilled in the art will understand that Fig.18This is only an example of the electronic device 1100 and does not constitute a limitation on the electronic device 1100. In practice, the electronic device 1100 may include more or fewer components than shown in the figure, or combine certain components, or different components, for example, it may also include input and output devices, network access devices, etc. The electronic device 1100 may also be the same device as the electronic device 1000 described in the above embodiment.

[0288] The processor 1110 may be a central processing unit (CPU), other general-purpose processors, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0289] In some embodiments, the memory 1120 may be an internal storage unit of the electronic device 1100, such as a hard disk or memory of the electronic device 1100. In other embodiments, the memory 1120 may also be an external storage device of the electronic device 1100, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 1100. Optionally, the memory 1120 may also include both an internal storage unit of the electronic device 1100 and an external storage device. The memory 1120 is used to store an operating system, an application program, a boot loader, data, and other programs, such as program codes of a computer program, etc. The memory 1120 may also be used to temporarily store data that has been output or is to be output.

[0290] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0291] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the above-mentioned device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0292] An embodiment of the present application also provides a chip system, which is applied to an electronic device. The chip system includes one or more processors, and the one or more processors are used to call computer instructions so that the electronic device implements the steps in any one of the above methods.

[0293] In some embodiments, the chip system also includes a memory, and the memory is connected to one or more processors through circuits or wires.

[0294] In some embodiments, the chip system also includes a communication interface.

[0295] An embodiment of the present application further provides a computer-readable medium, which includes instructions. When the instructions are executed on an electronic device, the electronic device implements the methods described in the above-mentioned various method embodiments.

[0296] The embodiments of the present application also provide a computer program product. When the computer program product is run on an electronic device, the electronic device executes the above-mentioned related steps to implement the methods described in the above-mentioned various method embodiments.

[0297] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device that can carry the computer program code to the camera / electronic device, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0298] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0299] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0300] In the embodiments provided in the present application, it should be understood that the disclosed devices / equipment and methods can be implemented in other ways. For example, the device / equipment embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0301] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0302] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0303] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0304] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0305] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some implementations", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0306] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery damage detection method, characterized in that: A detection circuit for detecting damage of a soft-pack battery, wherein the soft-pack battery comprises an aluminum-plastic film, an electrolyte and a tab, wherein the aluminum-plastic film comprises a first insulating layer, an aluminum layer and a second insulating layer stacked in sequence, wherein the first insulating layer is wrapped around the tab, and the electrolyte is partially filled between the tab and the first insulating layer. The detection circuit comprises a first circuit, and the first circuit is connected between the tab and the aluminum layer. The battery damage detection method comprises: When the first circuit is in a conducting state, detecting a first current of the first circuit; When a first current change value of the first current is greater than or equal to a first current change threshold, determining that the first insulating layer is damaged, the first current change value being calculated based on the first current detected at different times; When it is determined that the first insulating layer is damaged, and the first current change value is greater than or equal to a second current change threshold, determining that the damaged position of the first insulating layer is a non-electrolyte contact position, and the second current change threshold is greater than the first current change threshold; When it is determined that the damaged position is the non-electrolyte contact position, the first circuit is controlled to switch to an open circuit state, and the damage of the non-electrolyte contact position is used to indicate that the aluminum layer is in contact with the tab.

2. The battery damage detection method according to claim 1, characterized in that: Also includes: When the first current change value is less than the first current change threshold, it is determined that the first insulating layer is not damaged.

3. The battery damage detection method according to claim 2, characterized in that: The first circuit is provided with a first electronic switch and a first Hall current sensor. When the first circuit is in a conducting state, before detecting the first current of the first circuit, the battery damage detection method further includes: Controlling the first electronic switch to be in a closed state so that the first circuit is in the conducting state; When the first circuit is in a conducting state, detecting a first current of the first circuit includes: When the first circuit is in the on state, the first Hall current sensor is controlled to perform current detection on the first circuit to obtain the first current.

4. The battery damage detection method according to claim 3, characterized in that: The tab includes a positive tab, the first circuit includes a first sub-circuit, the first sub-circuit is connected between the positive tab and the aluminum layer, the first electronic switch includes a first sub-electronic switch, the first sub-electronic switch is arranged in the first sub-circuit, and the first current includes a first sub-current; The controlling the first electronic switch to be in a closed state so that the first circuit is in the conducting state comprises: Controlling the first sub-electronic switch to be in a closed state so that the first sub-circuit is in the conducting state; When the first circuit is in the on state, controlling the first Hall current sensor to detect the current of the first circuit to obtain the first current includes: When the first sub-circuit is in the on state, the first Hall current sensor is controlled to detect the current of the first sub-circuit to obtain the first sub-current.

5. The battery damage detection method according to claim 4, characterized in that: When the first current change value of the first current is greater than or equal to a first current change threshold, determining that the first insulating layer is damaged includes: When a first sub-current change value of the first sub-current is greater than or equal to the first current change threshold, determining that the first insulating layer is damaged, the first sub-current change value being calculated based on the first sub-current detected at different times; When the first current change value is less than a first current change threshold, determining that the first insulating layer is not damaged includes: When the first sub-current change value of the first sub-current is smaller than the first current change threshold, it is determined that the first insulating layer is not damaged.

6. The battery damage detection method according to claim 3, characterized in that: The tab includes a negative tab, the first circuit includes a second sub-circuit, the second sub-circuit is connected between the negative tab and the aluminum layer, the first electronic switch includes a second sub-electronic switch, the second sub-electronic switch is arranged in the second sub-circuit, and the first current includes a second sub-current; The controlling the first electronic switch to be in a closed state so that the first circuit is in the conducting state comprises: Controlling the second sub-electronic switch to be in a closed state so that the second sub-circuit is in the conducting state; When the first circuit is in the on state, controlling the first Hall current sensor to detect the current of the first circuit to obtain the first current includes: When the second sub-circuit is in the on state, the first Hall current sensor is controlled to detect the current of the second sub-circuit to obtain the second sub-current.

7. The battery damage detection method according to claim 6, characterized in that: When the first current change value of the first current is greater than or equal to a first current change threshold, determining that the first insulating layer is damaged includes: When a second sub-current change value of the second sub-current is greater than or equal to the first current change threshold, determining that the first insulating layer is damaged, the second sub-current change value being calculated based on the second sub-current detected at different times; When the first current change value is less than a first current change threshold, determining that the first insulating layer is not damaged includes: When the second sub-current change value of the second sub-current is smaller than the first current change threshold, it is determined that the first insulating layer is not damaged.

8. The battery damage detection method according to claim 1, characterized in that: Also includes: When it is determined that the first insulating layer is damaged and the first current change value is less than the second current change threshold, the damaged position is determined to be an electrolyte contact position.

9. The battery damage detection method according to claim 1, characterized in that: Also includes: When it is determined that the first insulating layer is damaged, a first warning message is sent to the client.

10. The battery damage detection method according to any one of claims 1 to 9, characterized in that: The soft-pack battery further includes a graphite layer, which is wrapped around a side of the second insulating layer away from the tab, and the detection circuit further includes a second circuit, which is connected between the aluminum layer and the graphite layer; The battery damage detection method further includes: When the second circuit is in the on state, detecting a second current of the second circuit; Whether the second insulating layer is damaged is determined according to the second current.

11. The battery damage detection method according to claim 10, characterized in that: The determining whether the second insulating layer is damaged according to the second current includes: When a second current change value of the second current is greater than or equal to a third current change threshold, determining that the second insulating layer is damaged, the second current change value being calculated based on the second current detected at different times; When the second current change value is less than a third current change threshold, it is determined that the second insulating layer is not damaged.

12. The battery damage detection method according to claim 10, characterized in that: The second circuit is provided with a second electronic switch and a second Hall current sensor. When the second circuit is in the on state, before detecting the second current of the second circuit, the battery damage detection method further includes: Controlling the second electronic switch to be in a closed state so that the second circuit is in the conducting state; When the second circuit is in the on state, detecting a second current of the second circuit includes: When the second circuit is in the on state, the second Hall current sensor is controlled to detect the current of the second circuit to obtain the second current.

13. The battery damage detection method according to claim 10, characterized in that: Also includes: When it is determined according to the second current that the second insulating layer is damaged, a second warning message is sent to the client.

14. A detection circuit, characterized in that: The detection circuit includes a first circuit, the first circuit includes a first subcircuit and a second subcircuit, the first subcircuit is connected to the positive electrode tab of the soft-pack battery and the aluminum layer of the aluminum-plastic film of the soft-pack battery, the aluminum-plastic film also includes a first insulating layer and a second insulating layer, the first insulating layer, the aluminum layer and the second insulating layer are stacked in sequence, the first insulating layer is wrapped around the positive electrode tab, the soft-pack battery also includes an electrolyte, the electrolyte is partially filled between the positive electrode tab and the first insulating layer, and the electrolyte is partially filled between the negative electrode tab of the soft-pack battery and the first insulating layer; The first sub-circuit is used to determine whether the first insulating layer is damaged according to a first sub-current detected in the first sub-circuit, and determine that the first insulating layer is damaged when a first sub-current change value of the first sub-current is greater than or equal to a first current change threshold, wherein the first sub-current change value is calculated based on the first sub-current detected at different times; The second sub-circuit is connected to the negative electrode tab and the aluminum layer, and the second sub-circuit is used to determine whether the first insulating layer is damaged according to a second sub-current detected in the second sub-circuit, and when a second sub-current change value of the second sub-current is greater than or equal to the first current change threshold, it is determined that the first insulating layer is damaged, and the second sub-current change value is calculated based on the second sub-current detected at different times; The first subcircuit and / or the second subcircuit is also used to determine the damage position of the first insulating layer when it is determined that the first insulating layer is damaged, and control the first circuit to switch to an open circuit state when it is determined that the damage position is a non-electrolyte contact position, and the damage of the non-electrolyte contact position is used to indicate that the aluminum layer is in contact with the tab; wherein, When it is determined that the first insulating layer is damaged, and the first sub-current change value is greater than or equal to a second current change threshold, the damaged position is determined to be the non-electrolyte contact position, and the second current change threshold is greater than the first current change threshold; and / or, When it is determined that the first insulating layer is damaged and the second sub-current change value is greater than or equal to the second current change threshold, the damaged position is determined to be the non-electrolyte contact position.

15. The detection circuit according to claim 14, characterized in that: The soft-pack battery also includes a graphite layer, which is wrapped around a side of the second insulating layer away from the positive electrode tab. The detection circuit also includes a second circuit, which is connected between the aluminum layer and the graphite layer. The second circuit is used to determine whether the second insulating layer is damaged based on a second current detected in the second circuit.

16. An electronic device, characterized in that: The electronic device includes: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program code, wherein the computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the electronic device to execute the battery damage detection method as described in any one of claims 1 to 13.

17. An electronic device, characterized in that: The electronic device comprises the detection circuit according to claim 14 or 15.

18. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes instructions, and when the instructions are executed on an electronic device, the electronic device executes the battery damage detection method according to any one of claims 1 to 13.

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