Battery, flexible humidity acquisition assembly, humidity monitoring device and electric equipment

Abstract

The utility model provides a battery, a flexible humidity acquisition assembly, a humidity monitoring device and electric equipment. The flexible humidity acquisition assembly is attached to at least one outer surface of a battery module of the battery; the flexible humidity acquisition assembly comprises a first flexible layer; a second flexible layer; the water absorption conducting layer is arranged between the first flexible layer and the second flexible layer; two opposite ends of the water-absorbing conductive layer are respectively connected with a first signal detection end and a second signal detection end; after the water-absorbing conductive layer absorbs water, the resistance value of the water-absorbing conductive layer changes, the change of the resistance value of the water-absorbing conductive layer can be reflected through signals detected by the first signal detection end and the second signal detection end, and then the humidity of the surrounding environment can be determined. The first flexible layer and the second flexible layer which have the flexible characteristics of free bending and the like are adopted to clamp the water absorption conductive layer, so that the flexible humidity acquisition assembly has the flexible characteristics of free bending and the like, humidity monitoring in a relatively large area can be realized, and the monitoring accuracy is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery, a flexible humidity collection component, a humidity monitoring device and an electrical device. Background Art

[0002] For the safe operation of electrical equipment, batteries are usually required to work in a dry environment. However, since the battery will generate heat during operation, water vapor will be formed under the repeated action of heating and cooling, which will cause the working environment of the battery to become humid. A humid working environment may cause the battery to short-circuit and other faults. In addition, there is also a risk of water entering the internal part of the electrical equipment during use. If water enters the internal part, the battery will also short-circuit and other faults.

[0003] Therefore, it is very necessary to use a humidity sensor to monitor the humidity of the battery's working environment and issue an abnormal alarm when the humidity in the working environment is abnormal.

[0004] However, current humidity sensors have a small detection range and cannot be randomly deployed, resulting in low humidity monitoring accuracy. Summary of the invention

[0005] The embodiments of the present application provide a battery, a flexible humidity collection component, a humidity monitoring device and electrical equipment, which can realize regional humidity monitoring and improve the accuracy of humidity monitoring.

[0006] In a first aspect, a battery is provided, the battery comprising a plurality of battery modules and a battery management unit;

[0007] A flexible humidity collection component is attached to at least one outer surface of the battery module;

[0008] The first signal detection end or the second signal detection end of the flexible humidity collection component is connected to a first power source, and the first power source is a constant current source;

[0009] The battery management unit is connected to the first signal detection end and the second signal detection end respectively.

[0010] In this embodiment, by attaching the flexible humidity collection component to the outer surface of the battery module, a regional layout of humidity monitoring is achieved, and the flexible humidity collection component can be used to detect the ambient humidity of the battery module.

[0011] In some embodiments, the battery may further include a high-voltage distribution box. A flexible humidity collection component is attached to at least one outer surface of the high-voltage distribution box.

[0012] In the embodiment of the present application, the operating safety of the electrical equipment is improved by monitoring the ambient humidity of the high-voltage distribution box.

[0013] In a second aspect, a flexible humidity collection component is provided, comprising:

[0014] a first flexible layer;

[0015] a second flexible layer;

[0016] and, a water-absorbing conductive layer disposed between the first flexible layer and the second flexible layer;

[0017] The opposite ends of the water-absorbing conductive layer are respectively connected to the first signal detection end and the second signal detection end; and the second flexible layer is insulated on a side away from the water-absorbing conductive layer.

[0018] In a flexible humidity collection component provided in an embodiment of the present application, after the water-absorbing conductive layer absorbs water, the resistance of the water-absorbing conductive layer will change. The signals detected by the first signal detection end and the second signal detection end can reflect the resistance change of the water-absorbing conductive layer, and then the humidity of the surrounding environment can be determined. The water-absorbing conductive layer is clamped by a first flexible layer and a second flexible layer with flexible properties such as free bending, so that the flexible humidity collection component also has a flexible property of free bending. In this way, when humidity monitoring is required, the flexible humidity collection component can be arranged at a position where humidity monitoring is required, and can be attached to any position of the battery. Humidity monitoring of a larger area can also be achieved, thereby improving the accuracy of monitoring.

[0019] In some embodiments, the first flexible layer is a flexible circuit board; the flexible circuit board includes an insulating layer and a circuit substrate;

[0020] The insulating layer of the flexible circuit board is the first surface of the first flexible layer, and the circuit substrate of the flexible circuit board is the second surface of the first flexible layer; wherein the second surface of the first flexible layer is bonded to the water-absorbing conductive layer.

[0021] In the embodiment of the present application, a flexible circuit board is directly used as the first flexible layer, so that the above-mentioned flexible humidity collection component is easier to implement, and in this way, a signal detection end can be led out from the circuit substrate of the flexible circuit board, which is convenient for setting the signal detection end.

[0022] In the embodiment of the present application, the second flexible layer is a flexible circuit board; the flexible circuit board includes an insulating layer and a circuit substrate;

[0023] The insulating layer of the flexible circuit board is the first surface of the second flexible layer, the circuit substrate of the flexible circuit board is the second surface of the second flexible layer, and the second surface of the second flexible layer is bonded to the water-absorbing conductive layer.

[0024] In the embodiment of the present application, the second flexible layer directly adopts a flexible printed circuit board, which is also convenient for setting the signal detection end.

[0025] In some embodiments, a plurality of hollow areas are disposed at intervals on the first surface of the first flexible layer.

[0026] In the embodiment of the present application, by setting a hollow area on the first surface of the first flexible layer, water vapor from the surrounding environment can better enter the conductive layer, effectively improving the water absorption of the flexible humidity collection component, thereby improving the accuracy of humidity measurement.

[0027] In a third aspect, an embodiment of the present application provides a humidity monitoring device, which is applied to a battery. The battery includes a battery module. The humidity monitoring device includes:

[0028] The flexible humidity collection component as described in any one of the second aspects; the flexible humidity collection component is attached to at least one outer surface of the battery module;

[0029] A first power source, the first power source is connected to the first signal detection end or the second signal detection end of the flexible humidity collection component; the first power source is a constant current source;

[0030] A collection unit, wherein the first voltage collection terminal of the collection unit is connected to the first signal detection terminal, and the second voltage collection terminal of the collection unit is connected to the second signal detection terminal; the collection unit collects the signal between the first signal detection terminal and the second signal detection terminal;

[0031] And, a control unit, wherein the control unit is communicatively connected with the acquisition unit.

[0032] In the embodiment of the present application, a regional layout of humidity monitoring is achieved by attaching a flexible humidity collection component to the outer surface of the battery module, and a constant current source is used to keep the current constant. When there is water vapor in the surrounding environment, the resistance of the conductive layer in the flexible humidity collection component will change, and the signal monitored between the first signal detection end and the second signal detection end will also change. Therefore, the humidity of the surrounding environment can be monitored through the signal changes collected by the collection unit, thereby improving the accuracy of humidity monitoring.

[0033] In some embodiments, the battery includes a battery management unit, and the battery management unit includes a constant current chip; the acquisition unit is the battery management unit, and the first power supply is a power supply output by the constant current chip.

[0034] In the embodiments of the present application, existing devices in the battery are directly used to implement voltage acquisition and voltage monitoring, which can effectively simplify the circuit and save costs.

[0035] In some embodiments, the acquisition unit is communicatively connected to the control unit via an integrated circuit bus.

[0036] In a fourth aspect, an electrical device is provided, the electrical device comprising a battery as described in any one of the first aspect and / or a humidity monitoring device as described in any one of the third aspect.

[0037] It can be understood that the beneficial effects that can be achieved by the fourth aspect can refer to the beneficial effects of the first to third aspects provided above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of a flexible humidity collection component provided in an embodiment of the present application is shown.

[0039] Figure 2 A connection diagram of a signal detection end of a flexible humidity collection component provided in an embodiment of the present application is shown.

[0040] Figure 3 A schematic top view of a flexible humidity collection component provided in an embodiment of the present application is shown.

[0041] Figure 4 A schematic structural diagram of a humidity monitoring device provided in an embodiment of the present application is shown.

[0042] Figure 5 A schematic diagram of an application scenario of the humidity monitoring device provided in an embodiment of the present application is shown.

[0043] Figure 6 A schematic diagram of the circuit structure of the humidity monitoring device provided in the present application is shown.

[0044] Figure 7 A schematic diagram of another application scenario of a humidity monitoring device provided in an embodiment of the present application is shown.

[0045] Figure 8 A schematic structural diagram of a battery provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0046] The technical solution in the present application will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0047] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0048] The term "comprising" herein indicates the presence of the 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 their collections. The terms "comprising", "including", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized. Below, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0049] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0050] In order to more clearly explain the technical solution of this application, the concepts involved in this application are explained as follows:

[0051] A battery cell is a basic unit device that directly converts chemical energy into electrical energy, and usually includes: electrodes, diaphragms, electrolytes, casings and terminals.

[0052] A battery module is a device that consists of one or more battery cells connected in series, parallel, or series-parallel, and has only one pair of positive and negative output terminals.

[0053] The battery may include a housing, a battery module housed inside the housing, and a battery management unit (BMU) to realize electrical components for electrical connection of the battery and an interface for external connection.

[0054] Of course, the battery box may also include a high-voltage distribution box, a DC / DC converter, etc.

[0055] For the safe operation of electrical equipment, batteries are usually required to work in a dry environment. However, since the battery will generate heat during operation, water vapor will be formed under the repeated action of heating and cooling, which will cause the working environment of the battery to become humid. A humid working environment may cause the battery to short-circuit and other faults. In addition, there is also a risk of water entering the internal part of the electrical equipment during use. If water enters the internal part, the battery will also short-circuit and other faults.

[0056] Currently, in order to determine the humidity of the working environment of the battery, a humidity sensor is used to monitor the humidity of the working environment of the battery, and an abnormal alarm is issued when the humidity of the working environment is abnormal.

[0057] However, current humidity sensors have the problem of small detection range and cannot be arbitrarily deployed.

[0058] In order to solve the above technical problems, the embodiments of the present application provide a battery, a flexible humidity collection component, a humidity monitoring device and an electrical equipment, wherein after the water-absorbing conductive layer of the flexible humidity collection component absorbs water, the resistance of the water-absorbing conductive layer will change, and the signals detected by the first signal detection end and the second signal detection end can reflect the resistance change of the water-absorbing conductive layer, and then the humidity of the surrounding environment can be determined. The water-absorbing conductive layer is clamped by a first flexible layer and a second flexible layer with flexible characteristics such as free bending, so that the flexible humidity collection component also has a flexible characteristic of free bending. In this way, when humidity monitoring is required, the flexible humidity collection component can be arranged at the position where humidity monitoring is required, and can be attached to any position of the battery, and humidity monitoring of a larger area can also be achieved.

[0059] The following will first describe the flexible humidity collection component, humidity monitoring device and electrical equipment provided in the embodiments of the present application in conjunction with the accompanying drawings:

[0060] See also Figure 1 , Figure 1 FIG. 1 is a schematic diagram of a flexible humidity collection component provided in an embodiment of the present application. Figure 1 As shown, the flexible humidity collection component 10 includes a first flexible layer 11 , a second flexible layer 12 and a water-absorbing conductive layer 13 .

[0061] The water-absorbing conductive layer 13 is disposed between the first flexible layer 11 and the second flexible layer 12 .

[0062] The first flexible layer 11 and the second flexible layer 12 are made of flexible materials, and the flexible materials include but are not limited to polyvinyl alcohol film, polyester film, polyimide, polyethylene naphthalate, etc.

[0063] The side of the second flexible layer 12 away from the water-absorbing conductive layer 13 (ie, the bottom surface of the flexible humidity collection component 10 ) is insulated. During application, the bottom surface with good insulation can be applied to the area that needs to be detected.

[0064] The water-absorbing conductive layer 13 can be made of a water-absorbing material and a conductive material. After the water-absorbing material in the water-absorbing conductive layer absorbs water, the resistance of the water-absorbing conductive layer 13 will change.

[0065] The above-mentioned water-absorbing materials may include but are not limited to water-absorbing resins, water-absorbing fibers, water-absorbing cotton, etc.

[0066] The above conductive materials include but are not limited to conductive metals, composite polymer conductive materials, structural polymer conductive materials, etc. Among them, conductive metals include but are not limited to copper, aluminum, silver, copper alloys, aluminum alloys, etc.; composite polymer conductive materials include but are not limited to conductive plastics, conductive rubbers, conductive fiber fabrics, conductive coatings, conductive adhesives, and transparent conductive films, etc.; the above structural polymer conductive materials include but are not limited to electronic conductive polymer materials and ion conductive polymer materials.

[0067] For example, taking the absorbent material as absorbent cotton and the conductive material as conductive metal as an example, the absorbent conductive layer 13 can be prepared by doping the conductive metal into the absorbent cotton.

[0068] The doping ratio of the water-absorbing material and the conductive material can be set according to actual application requirements.

[0069] In some embodiments, when the water-absorbing conductive layer is dry, the resistance of the water-absorbing material may be 0 or close to 0.

[0070] The first flexible layer 11, the water-absorbing conductive layer 13 and the second flexible layer 12 can be pressed together by a pressing process to form the flexible humidity collection component.

[0071] The opposite ends of the water absorbing conductive layer 13 are connected to a first signal detection end 14 and a second signal detection end 15 respectively.

[0072] In a specific implementation, the first signal detection terminal 14 and the second signal detection terminal 15 can be wires, or other devices such as signal terminals. The following will take the first signal detection terminal 14 and the second signal detection terminal 15 as wires as an example for exemplary description.

[0073] For example, Figure 2 FIG. 1 shows a schematic diagram of the connection of the wires of the flexible humidity collection assembly provided in an embodiment of the present application. Figure 2 As shown in (a), the first signal detection terminal 14 is connected to any position of the A side of the water-absorbing conductive layer 13, and the A side of the conductive layer is the side where the water-absorbing conductive layer 13 contacts the first flexible layer 11, while the second signal detection terminal 15 is connected to any position of the B side of the water-absorbing conductive layer 13, and the B side of the conductive layer is the side opposite to the A side, where the water-absorbing conductive layer 13 contacts the second flexible layer 12.

[0074] Another example Figure 2As shown in (b), the first signal detection terminal 14 is connected to any position of the C side of the water-absorbing conductive layer 13, and the C side of the conductive layer is the side adjacent to the A side of the conductive layer, while the second signal detection terminal 15 is connected to any position of the D side of the water-absorbing conductive layer 13, and the D side is the side opposite to the C side.

[0075] From the above, it can be seen that in a flexible humidity collection component provided by an embodiment of the present application, after the water-absorbing conductive layer absorbs water, the resistance of the conductive layer will change. The signals detected by the first signal detection end and the second signal detection end can reflect the resistance change of the water-absorbing conductive layer, and then the humidity of the surrounding environment can be determined. The conductive layer is clamped by a first flexible layer and a second flexible layer having flexible properties such as free bending, so that the flexible humidity collection component also has a flexible property of free bending. In this way, when humidity monitoring is required, the flexible humidity collection component can be arranged at the position where humidity monitoring is required, can be attached to any position of the battery, and humidity monitoring of a larger area can be achieved.

[0076] In some embodiments, the first flexible layer 11 is a flexible printed circuit board (hereinafter referred to as the first FPC to distinguish it from the second flexible layer).

[0077] Flexible Printed Circuit (FPC) is a highly reliable and freely bendable printed circuit board made of polyimide or polyester film. FPC has the characteristics of high wiring density, light weight, thin thickness and good bendability.

[0078] The above-mentioned flexible circuit board generally comprises an insulating layer and a circuit substrate, wherein the insulating layer forms the base layer of the circuit, and the circuit substrate can be bonded to the insulating layer using an adhesive.

[0079] In some embodiments, the circuit substrate may be a copper foil substrate, which may be prepared by electrodeposition (ED) or plating. The copper foil substrate has flexibility and can be used as a conductor in a flexible circuit. Of course, the circuit substrate may also be made of other metals.

[0080] The insulating layer of the first FPC is the first surface of the first flexible layer 11, and the circuit substrate of the first FPC is the second surface of the first flexible layer 11. The first surface of the first flexible layer is insulating, and the second surface is conductive, and the second surface is in contact with the water-absorbing conductive layer 13. In this way, the first signal detection terminal 14 can be led out from the circuit substrate of the first FPC to connect with the A side of the water-absorbing conductive layer 13, and the first signal detection terminal 14 and the second signal detection terminal 15 can also be led out from the circuit substrate of the first FPC, respectively, and the first signal detection terminal 14 is connected to the C side of the water-absorbing conductive layer 13, and the second signal detection terminal 15 is connected to the D side of the water-absorbing conductive layer 13.

[0081] It can be seen from the above that directly using a flexible circuit board as the first flexible layer can make the flexible humidity collection component provided in the embodiment of the present application easier to implement, and can also directly lead out the signal detection end from the circuit substrate of the flexible circuit board, thereby facilitating the setting of the signal detection end.

[0082] In an embodiment of the present application, the second flexible layer 12 may also be a flexible printed circuit board (referred to as the second FPC for short).

[0083] The insulating layer of the second FPC is the first surface of the second flexible layer 12, the circuit substrate of the second FPC is the second surface of the second flexible layer 12, the first surface of the second flexible layer is insulating, the second surface is conductive, and the second surface is in contact with the water-absorbing conductive layer 13. In this way, the second signal detection terminal 15 can be led out from the circuit substrate of the second FPC to connect with the B side of the water-absorbing conductive layer 13, and the first signal detection terminal 14 and the second signal detection terminal 15 can also be led out from the circuit substrate of the second FPC, respectively, the first signal detection terminal 14 is connected to the C side of the water-absorbing conductive layer 13, and the second signal detection terminal 15 is connected to the D side of the water-absorbing conductive layer 13.

[0084] In this embodiment, the second flexible layer also uses a flexible circuit board, which makes the flexible humidity collection component easier to implement. At the same time, the signal detection end can be directly led out from the circuit substrate of the flexible circuit board, which is convenient for setting the signal detection end.

[0085] See also Figure 3 , Figure 3 Schematic diagram of a top view of a flexible humidity collection component provided in one embodiment of the present application. In one embodiment of the present application, Figure 3 As shown, a plurality of hollow areas 16 are arranged at intervals on the first surface of the first flexible layer 11 .

[0086] The number, shape and size of the hollowed-out areas 16 can be set according to actual application requirements.

[0087] Exemplarily, the hollowed-out area may be a round hole, a square hole or the like, and may also be hollowed out into other shapes.

[0088] By opening a plurality of hollow areas on the first surface of the first flexible layer, water vapor in the surrounding environment can better enter the conductive layer, so that the water-absorbing material in the conductive layer can better absorb water vapor in the surrounding environment, thereby improving the accuracy of humidity measurement.

[0089] A flexible humidity collection component 10 provided in an embodiment of the present application is introduced above. The humidity monitoring device 20 using the flexible humidity collection component 10 is described below in conjunction with the accompanying drawings as follows:

[0090] See also Figure 4 , Figure 4 FIG. 2 shows a schematic diagram of the structure of a humidity monitoring device 20 provided in an embodiment of the present application. Figure 4 As shown, the humidity monitoring device 20 may include the flexible humidity collection component 10 , a first power source 21 , a collection unit 22 and a control unit 23 .

[0091] The first power source 21 is a constant current source, and the first power source 21 is connected to the first signal detection end 14 or the second signal detection end 15 of the flexible humidity collection component 10 .

[0092] The first voltage collection terminal IN1 of the collection unit 22 is connected to the first signal detection terminal 14 , and the second voltage collection terminal IN2 is connected to the second signal detection terminal 15 , for collecting signals between the first signal detection terminal 14 and the second signal detection terminal 15 .

[0093] The control unit 23 is in communication connection with the acquisition unit 22 .

[0094] The control unit 23 is used to receive the signal between the first signal detection terminal 14 and the second signal detection terminal 15 collected by the collection unit 22, and determine the humidity of the working environment of the battery according to the signal between the first signal detection terminal 14 and the second signal detection terminal 15.

[0095] In a specific application, the above signal is a voltage signal, that is, the acquisition unit 23 acquires the voltage value between the first signal detection terminal 14 and the second signal detection terminal 15. The control unit 24 determines the humidity change of the battery environment according to the change of the voltage value between the first signal detection terminal 14 and the second signal detection terminal 15, thereby realizing real-time monitoring of the humidity of the battery environment.

[0096] In the embodiment of the present application, the flexible humidity collection component 10 is attached to at least one outer surface of the battery module.

[0097] In a specific application, the flexible humidity collection component 10 may be attached only to one outer surface of the battery module, or partially attached to the outer surface of the battery module, or completely attached to the outer surface of the battery module.

[0098] For example, see Figure 5 , Figure 5 Schematic diagram of application scenario of the humidity monitoring device 20 provided in an embodiment of the present application.

[0099] like Figure 5 As shown in (a) of FIG. 1 , the battery 30 may include a plurality of battery modules 31, and the outer surface of each battery module 31 is partially surrounded by the above-mentioned flexible humidity collection component 10. Figure 5 As shown in (b) , taking a single battery module 31 as an example, the flexible humidity collection component 10 is completely attached to the outer surface of the battery module 31 .

[0100] In some embodiments, the acquisition unit 22 and the control unit 23 may be integrated into one chip, for example, integrated into a control chip such as a microcontroller unit (MCU) or a central processing unit (CPU).

[0101] For example, see Figure 6 , Figure 6 FIG. 2 shows a schematic diagram of the circuit structure of the humidity monitoring device 20 provided in the present application. Figure 6 As shown, the output pin out of the above-mentioned first power supply 21 is connected to the first end of the first resistor R1, the second end of the first resistor R1 is connected to the first end of the second resistor R2, the second end of the second resistor R2 is connected to the above-mentioned first signal detection end 14, the above-mentioned second signal detection end 15 is connected to the second end of the third resistor R3, the second end of the third resistor R3 is grounded, the above-mentioned first signal detection end 14 is also connected to the first end of the fourth resistor R4, the second end of the fourth resistor R4 is connected to the GPIO1 pin of the MCU, the second signal detection end 15 is also connected to the first end of the fifth resistor R5, the second end of the fifth resistor R5 is connected to the GPIO2 pin of the MCU, the first capacitor C1 is connected to the first end of the first resistor R1, the second end of the first capacitor C1 is grounded, the first end of the second capacitor C2 is connected to the second end of the fourth resistor R4, the second end of the second capacitor C2 is grounded, the first end of the third capacitor C3 is connected to the second end of the fifth resistor R5, and the second end of the third capacitor C3 is grounded.

[0102] exist Figure 6In the humidity monitoring device 20 shown, the above-mentioned acquisition unit 22 and the above-mentioned control unit 23 are integrated into an MCU, and the MCU is used to collect the voltage between the first signal detection terminal 14 and the second signal detection terminal 15. The MCU determines the humidity of the working environment of the battery based on the voltage between the first signal detection terminal 14 and the second signal detection terminal 15.

[0103] In other embodiments, the acquisition unit 22 and the control unit 23 may also be respectively arranged in different chips, for example, the acquisition unit 22 is arranged in the battery management unit of the battery module, and the control unit 23 is arranged in the main control unit of the electric device; or the acquisition unit 22 is arranged in the battery management unit of the battery module, and the control unit 23 is arranged in the battery management unit of the battery; or the acquisition unit 22 is arranged in the battery management unit of the battery, and the control unit 23 is arranged in the main control unit of the electric device. The specific setting method can be set according to the actual application scenario.

[0104] The acquisition unit 22 and the control unit 23 can be connected to each other through various communication methods such as an integrated circuit bus (Inter-Integrated Circuit, IIC), a universal serial bus (Universal Serial Bus, USB), a serial peripheral interface bus (Serial Peripheral Interface, SPI), a ZigBee protocol wireless communication network (ZigBee wireless network), etc.

[0105] The humidity monitoring device 20 collects the voltage between the first signal detection terminal 14 and the second signal detection terminal 15 through the collection unit 22, and determines the humidity of the working environment of the battery according to the voltage between the first signal detection terminal 14 and the second signal detection terminal 15 through the control unit 23. When the water-absorbing conductive layer 13 of the flexible humidity collection component 10 absorbs water, the resistance value of the water-absorbing conductive layer 13 will change. Since the first signal detection terminal 14 is connected to a constant current source, the voltage between the first signal detection terminal 14 and the second signal detection terminal 15 changes with the change of resistance value. The battery management unit 32 can judge whether the humidity of the surrounding environment exceeds the safety range according to the voltage between the first signal detection terminal 14 and the second signal detection terminal 15. If it exceeds, the corresponding control strategy can be executed.

[0106] Assuming that the battery management system 31 monitors that the voltage between the first signal detection terminal 14 and the second signal detection terminal 15 is less than the first preset voltage, it can be determined that the humidity of the battery environment meets the battery working requirements, and no operation is required at this time. When the battery management system 31 monitors that the voltage between the first signal detection terminal 14 and the second signal detection terminal 15 is not less than the first preset voltage, it can be determined that the humidity of the battery environment has exceeded the ambient humidity required for battery operation. At this time, an abnormal alarm can be issued, or the battery can be controlled to be under high voltage while issuing an abnormal alarm.

[0107] It should be noted that the voltage between the first signal detection terminal 14 and the second signal detection terminal 15 varies with the humidity of the surrounding environment. Therefore, different preset voltages can be set according to different usage conditions, for example, a first preset voltage is set for a humid working environment, and a second preset voltage is set for a water-influent working environment. When the voltage between the first signal detection terminal 14 and the second signal detection terminal 15 is greater than or equal to the first preset voltage but less than the second preset voltage, it can be considered that the current working environment of the battery is humid but no water ingress fault has occurred. At this time, the control unit 23 can send an alarm signal to prompt the user to maintain the electrical equipment. When the voltage between the first conductive 14 and the second signal detection terminal 15 is greater than or equal to the above-mentioned second voltage threshold, it is considered that the battery has experienced a water ingress fault. At this time, in order to reduce the risk of battery short circuit, the control unit 23 can directly perform a lower high voltage process to protect the battery, and at the same time can feedback water ingress fault prompt information so that the user can resolve the fault.

[0108] It should be noted that the first preset voltage and the second preset voltage can be set according to the material, length, resistance change after water absorption, and current value of the constant current source output by the first power supply of the flexible humidity collection component.

[0109] It is understandable that when the battery has a fault such as leakage, the above-mentioned flexible humidity collection component will also cause the resistance of the conductive layer to change due to the liquid on the outer surface of the battery module, and trigger the voltage change between the first signal detection terminal 14 and the second signal detection terminal 15. That is, the humidity monitoring device provided in the embodiment of the present application can also be used to detect whether the battery is leaking.

[0110] From the above, it can be seen that the humidity monitoring device provided in the embodiment of the present application realizes the regional layout of humidity monitoring by attaching the flexible humidity collection component to the outer surface of the battery module, and uses a constant current source to make the current constant. When there is water vapor in the surrounding environment, the resistance of the conductive layer in the flexible humidity collection component will change, and the monitored voltage between the first signal detection terminal and the second signal detection terminal will also change, so that the humidity of the surrounding environment can be monitored through the change of the voltage value, thereby improving the accuracy of humidity monitoring.

[0111] In one embodiment of the present application, a high-voltage distribution box is usually also provided in the battery, and the working environment of the high-voltage distribution box also needs to be kept dry. Therefore, when the battery includes a high-voltage distribution box, the flexible humidity collection component 10 in the above-mentioned humidity monitoring device 20 can also be attached to at least one outer surface of the above-mentioned high-voltage distribution box, so as to monitor the environmental humidity of the high-voltage distribution box and improve the safety of the operation of electrical equipment.

[0112] It is understandable that the flexible humidity collection component 10 may be applied only on one outer surface of the high-voltage distribution box, partially around the outer surface of the high-voltage distribution box, or completely around the outer surface of the high-voltage distribution box.

[0113] It should be noted that the above-mentioned flexible humidity collection component 10 can be attached to any position where humidity monitoring is required, such as the outer surface of the above-mentioned battery module, the outer surface of the above-mentioned high-voltage distribution box, and can also be attached to the detection position of the DC / DC converter.

[0114] In one embodiment of the present application, the battery 30 includes a battery management unit 32, and the battery management unit 32 includes a constant current chip 211, that is, the above-mentioned acquisition unit 22 can specifically be the above-mentioned battery management unit 32, and the battery management unit 32 of the battery is used to collect the voltage between the first signal detection terminal 14 and the second signal detection terminal 15. At this time, the first power supply 21 is the power supply output by the constant current chip.

[0115] See also Figure 7 , Figure 7 FIG. 2 is a schematic diagram showing another application scenario of a humidity monitoring device provided in an embodiment of the present application. Figure 7 As shown, the first signal detection terminal 14 and the second signal detection terminal 15 of the flexible humidity collection component 10 are connected to the battery management unit 32 of the battery 30. The battery management unit 32 is provided with a constant current chip (not shown in the figure), which outputs a constant current, and the output end of the constant current chip can be connected to the first signal detection terminal 14.

[0116] In some embodiments, the battery module 31 may also be provided with a battery management chip (BMU chip). The BMU chip of the battery module 31 is connected to the first signal detection terminal 14 and the second signal detection terminal 15 of the flexible humidity collection component as the collection unit 22, and can collect the voltage between the first signal detection terminal 14 and the second signal detection terminal 15. The BMU chip of the battery module 31 may also be provided with a constant current chip. The constant current chip 211 outputs constant current electricity, and the output end of the constant current chip can be connected to the first signal detection terminal 14. Among them, the BMU chip in the battery module 31 is connected to the battery management unit 32 of the battery 30 through the IIC bus communication. That is, the BMU chip in the battery module 31 is equivalent to the collection unit 22, and the battery management unit 32 is equivalent to the control unit 23.

[0117] It can be seen from the above that the humidity monitoring device provided in the embodiment of the present application can directly use the existing devices in the battery to realize voltage collection and voltage monitoring, which can effectively simplify the circuit and save costs.

[0118] See also Figure 8 , Figure 8 FIG. 1 shows a schematic diagram of the structure of a battery provided in an embodiment of the present application. Figure 8 As shown, the battery 30 includes a plurality of battery modules 31 and a battery management unit 32. The flexible humidity collection component 10 is attached to at least one outer surface of the battery module 31. The first signal detection terminal 14 or the second signal detection terminal 15 of the flexible humidity collection component 10 is connected to the first power source 21 ( Figure 7 The first signal detection terminal 14 shown in the figure is connected to the first power supply 21), the first signal detection terminal 14 and the second signal detection terminal 15 are connected to the battery management unit 32 of the battery 10, and the first power supply 21 is a constant current source.

[0119] In the embodiment of the present application, by attaching the flexible humidity collection component to the outer surface of the battery module, a regional layout of humidity monitoring is achieved, and the flexible humidity collection component can be used to detect the ambient humidity of the battery module.

[0120] An embodiment of the present application further provides an electrical device, which may include the battery and / or the humidity monitoring system.

[0121] In specific applications, the above-mentioned electrical equipment can be vehicles, or mobile phones, computers and other equipment.

[0122] 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.

[0123] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0124] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. 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.

[0125] The units described 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.

[0126] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0127] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer functional unit (which can be a personal computer, a server, or a network functional unit, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0128] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A flexible humidity collection component, characterized in that: include: a first flexible layer; a second flexible layer; and, a water-absorbing conductive layer disposed between the first flexible layer and the second flexible layer; The opposite ends of the water-absorbing conductive layer are respectively connected to a first signal detection end and a second signal detection end; and a side of the second flexible layer away from the water-absorbing conductive layer is insulated.

2. The flexible humidity collection component according to claim 1, characterized in that: The first flexible layer is a flexible circuit board; the flexible circuit board includes an insulating layer and a circuit substrate; The insulating layer of the flexible circuit board is the first surface of the first flexible layer, and the circuit substrate of the flexible circuit board is the second surface of the first flexible layer; wherein the second surface of the first flexible layer is bonded to the water-absorbing conductive layer.

3. The flexible humidity collection component according to claim 1, characterized in that: The second flexible layer is a flexible circuit board; the flexible circuit board includes an insulating layer and a circuit substrate; The insulating layer of the flexible circuit board is the first surface of the second flexible layer, the circuit substrate of the flexible circuit board is the second surface of the second flexible layer, and the second surface of the second flexible layer is attached to the water-absorbing conductive layer.

4. The flexible humidity collection component according to any one of claims 1 to 3, characterized in that: A plurality of hollow areas are arranged at intervals on the first surface of the first flexible layer.

5. A humidity monitoring device, characterized in that: Applied to a battery, the battery includes a battery module, and the humidity monitoring device includes: The flexible humidity collection component according to any one of claims 1 to 4; the flexible humidity collection component is attached to at least one outer surface of the battery module; A first power source, the first power source is connected to the first signal detection end or the second signal detection end of the flexible humidity collection component; the first power source is a constant current source; A collection unit, wherein a first voltage collection terminal of the collection unit is connected to the first signal detection terminal, and a second voltage collection terminal of the collection unit is connected to the second signal detection terminal; the collection unit collects signals between the first signal detection terminal and the second signal detection terminal; And, a control unit, wherein the control unit is communicatively connected with the acquisition unit.

6. The humidity monitoring device according to claim 5, characterized in that: The battery includes a battery management unit, and the battery management unit includes a constant current chip; the acquisition unit is the battery management unit, and the first power supply is the power supply output by the constant current chip.

7. The humidity monitoring device according to claim 5 or 6, characterized in that: The acquisition unit is communicatively connected with the control unit via an integrated circuit bus.

8. A battery, characterized in that: The battery includes several battery modules and a battery management unit; At least one outer surface of the battery module is provided with a flexible humidity collection component as described in any one of claims 1 to 4; The first signal detection end or the second signal detection end of the flexible humidity collection component is connected to a first power source, and the first power source is a constant current source; The battery management unit is connected to the first signal detection end and the second signal detection end respectively.

9. The battery according to claim 8, characterized in that The battery also includes a high voltage distribution box; The flexible humidity collection component is attached to at least one outer surface of the high-voltage distribution box.

10. An electrical device, characterized in that: The electrical device comprises the battery according to claim 8 or 9 and / or the humidity monitoring device according to any one of claims 5 to 7.

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