Information collection device and battery pack

Abstract

To provide an information collection device and a battery pack which improve the sealing performance of a signal collection device.SOLUTION: The present disclosure relates to the field of battery technologies, and provides an information collection device and a battery pack. The information collection device includes a casing, an air pressure sensor, and a sealing member. The casing has a first installation hole. The air pressure sensor is installed inside the casing, and at least a part of the air pressure sensor is snap-fitted into the first installation hole to acquire an air pressure parameter outside the casing. The sealing member seals the first installation hole, and the sealing member is used to allow gas to pass through and prevent liquid from passing through. Thereby, the information collection device can be arranged in a battery cell, and can collect information in an environment of electrolyte, thus capable of mitigating the technical problems of complex structure and insufficient reliability of a cover plate of the battery cell caused by external arrangement of the information collection device.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to the field of battery technology, and more particularly to an information collection device and a battery pack. [Background technology]

[0002] In related art, the collection of information from the inside of a battery cell is typically achieved by installing a collection device outside the battery cell, with the collection end of the collection device being insulated and penetrating the inside of the battery cell. However, this method requires modifying components such as the cover plate of the battery cell, which increases the complexity of the cover plate and risks reducing the reliability of the cover plate. Summary of the Invention

[0003] The disclosed embodiments provide an information collection device and a battery pack, and improve the sealing of the signal collection device, allowing the signal collection device to be built into the battery, thereby resolving technical issues that arise when the information collection device is installed externally, such as the complex structure of the cover plate of the battery cell and lack of reliability.

[0004] In a first aspect, an embodiment of the present disclosure provides an information collection device and a battery pack, the information collection device including a housing, an air pressure sensor, and a sealing component, the housing having a first mounting hole, the air pressure sensor mounted within the housing, and at least a portion of the air pressure sensor engaging with the first mounting hole to acquire air pressure parameters outside the housing, the sealing component sealing the first mounting hole, and the sealing component being gas permeable and liquid impermeable.

[0005] In one embodiment, the air pressure sensor includes a base and a side wall, the side wall is annularly arranged around the periphery of the base, the side wall and the base surround and form a mounting cavity, one side of the side wall away from the base is inserted into the first mounting hole, a air pressure chip is mounted on the base, the base is suitable for mounting on a circuit board, the air pressure chip is electrically connected to the circuit board, and a gel layer and a sealing layer are sequentially filled in the mounting cavity along a direction away from the base.

[0006] In one embodiment, a sealing plate for closing the passage is configured within the first mounting hole, a first air hole is configured on the sealing plate, the side wall is engaged within the first mounting hole, and one side of the side wall away from the base abuts against the sealing plate.

[0007] In one embodiment, the sealing plate has an abutment portion extending toward the air pressure sensor, the abutment portion being spaced apart from the hole wall surface of the first mounting hole and forming an engagement groove, a stepped surface being formed on one side of the side wall away from the base, the side wall being engaged in the engagement groove, and the stepped surface abutting against the abutment portion.

[0008] In one embodiment, the sealing component includes a first air permeable membrane, which is connected to the outer surface of the housing and seals the first air hole.

[0009] In one embodiment, the sealing component includes a second air permeable membrane and a second sealing lid, a second air permeable hole is formed in the second sealing lid, the second sealing lid is engaged with the first mounting hole, and the second air permeable membrane is connected to the second sealing lid to seal the second air permeable hole.

[0010] In one embodiment, a sealing groove is formed on the outer surface of the housing, the first mounting hole is formed in the groove bottom surface of the sealing groove, a connecting portion is further formed in the groove bottom surface of the sealing groove, the connecting portion is provided at a distance from the first mounting hole, the connecting portion is formed with a central hole and a notch communicating with the central hole, the notch faces the first mounting hole, the second sealing cover is engaged with the sealing groove, and the second air permeable hole and the central hole are positioned corresponding to each other.

[0011] In one embodiment, the information collection device further includes a temperature sensor, a second mounting hole is formed in the housing, a fourth sealing lid is connected to the second mounting hole, a connection hole is formed in the fourth sealing lid, one end of the temperature sensor is located within the housing, and the other end of the temperature sensor penetrates the housing from the connection hole to acquire temperature parameters outside the housing.

[0012] In one embodiment, the portion of the temperature sensor that passes through the connection hole is arranged to be connected to a heat equalizing plate, and the heat equalizing plate is connected between two adjacent winding cores.

[0013] In one embodiment, where the temperature sensor passes through the connection hole, there are multiple temperature collection points and a pressure intensity sensing unit is integrated.

[0014] In one embodiment, the housing is configured with an adhesive injection hole and an exhaust hole spaced apart, the adhesive injection hole is positioned to inject adhesive into the housing, the exhaust hole is positioned to exhaust air from the housing when injecting adhesive, the adhesive injection hole is suitable for being sealed by a first sealing portion, and the exhaust hole is suitable for being sealed by a second sealing portion.

[0015] In one embodiment, the information collection device further includes a circuit board, wherein the circuit board is mounted in the housing, the sensor is mounted on the circuit board, and a signal transmitting unit is provided on the circuit board to wirelessly transmit parameter information to a terminal.

[0016] In one embodiment, a mounting bracket is provided on the circuit board, the mounting bracket being for connecting to a battery.

[0017] In one embodiment, the mounting bracket includes a first connecting sheet and a second connecting sheet arranged relative to each other, the first connecting sheet is configured with a third connecting sheet that is folded toward the second connecting sheet, the third connecting sheet is electrically connected to the circuit board, the second connecting sheet includes a fourth connecting sheet that extends toward the circuit board, the fourth connecting sheet is electrically connected to the circuit board, and the battery is sandwiched between the first connecting sheet and the second connecting sheet.

[0018] In a second aspect, an embodiment of the present disclosure provides a battery pack, the battery pack including the information collection device.

[0019] In an embodiment of the present disclosure, an air pressure sensor is mounted inside the housing, and at least a portion of the air pressure sensor is engaged with the first mounting hole to acquire air pressure parameters outside the housing, thereby achieving information collection. A sealing component seals the first mounting hole, ensuring good sealing of the housing and allowing the information collection device to be built into the battery cell. The sealing component is permeable to gases but blocks liquids, allowing the air pressure sensor to acquire air pressure parameters outside the housing through the sealing component, thereby achieving collection of air pressure parameters. This allows the information collection device to collect information in an electrolyte environment, thereby addressing technical issues that arise when the information collection device is installed externally, such as the complex structure and lack of reliability of the battery cell cover plate. [Brief explanation of the drawings]

[0020] In order to more clearly explain the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some of the embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings without any creative efforts.

[0021] [Figure 1] 1 is a three-dimensional view of an information collection device according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is an exploded view of an information collection device according to an embodiment of the present disclosure. [Figure 3] 1 is a cross-sectional view of a barometric pressure sensor according to an embodiment of the present disclosure. [Figure 4] FIG. 2 is a first structural schematic diagram of a housing according to an embodiment of the present disclosure. [Figure 5] FIG. 5 is an enlarged view of a portion A in FIG. [Figure 6] FIG. 10 is a second structural schematic diagram of a housing according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0022] The following clearly and completely describes the technical solutions in the embodiments of the present disclosure in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments that can be obtained by those skilled in the art based on the embodiments of the present disclosure without creative work fall within the scope of protection of the present disclosure. In addition, it should be understood that the specific implementation methods described herein are intended to explain and interpret the present disclosure, and do not limit the present disclosure. In this disclosure, unless otherwise specified, the directional terms "up" and "down" generally refer to the up and down in the actual use or operating state of the device, specifically the direction in the drawing. "Inside" and "outside" refer to the contour of the device.

[0023] 1 to 6, an embodiment of the present disclosure provides an information collection device. The information collection device includes a housing 10, an air pressure sensor 20, and a sealing component. A first mounting hole 110 is formed in the housing 10. The air pressure sensor 20 is mounted within the housing 10, and at least a portion of the air pressure sensor 20 is engaged with the first mounting hole 110 to acquire air pressure parameters outside the housing 10. The sealing component seals the first mounting hole 110, and the sealing component allows gas to pass through while blocking liquid.

[0024] In this embodiment, the air pressure sensor 20 is mounted inside the housing 10, and at least a portion of the air pressure sensor 20 is engaged with the first mounting hole 110 to acquire air pressure parameters outside the housing 10 and achieve information collection. A sealing component seals the first mounting hole 110, ensuring good sealing performance of the housing 10 and allowing the information collection device to be built into the battery cell. Because the sealing component is permeable to gases but impervious to liquids, the air pressure sensor 20 can acquire air pressure parameters outside the housing 10 through the sealing component, achieving the collection of air pressure parameters. This allows the information collection device to collect information in an electrolyte environment, eliminating the technical problems that arise when the information collection device is installed externally, such as the complex structure and poor reliability of the battery cell cover plate.

[0025] 2, in some embodiments, the housing 10 includes an outer shell and a bottom cover, the outer shell forming a cavity that opens downward, and the bottom cover fittingly fitting under the outer shell and closing the opening of the cavity. Here, the first mounting hole 110 may be provided on one side of the outer shell that is away from the bottom cover.

[0026] 2, in some embodiments, a stepped surface is formed on the edge of the bottom cover facing the outer shell, and the bottom cover is engaged and connected to the outer shell based on the stepped surface, thereby realizing the connection between the two. This simplifies the structure of the housing 10, makes installation convenient, and allows direct compatibility with existing main battery cell assembly production lines.

[0027] In some embodiments, the bottom cover and the outer shell may be welded and sealed by ultrasonic welding after they are mated together to ensure a seal between them, or a seal ring may be provided at the connection between the outer shell and the bottom cover to ensure a seal between them.

[0028] The information collection device is particularly suitable for installation inside a battery cell. The information collection device is located between the top plate and the winding core inside the battery cell, and is located adjacent to the positive and negative electrode columns or non-metallic sealing components. Because the internal environment of the battery cell is filled with electrolyte, sealing based on the sealing components can prevent the electrolyte from penetrating into the housing 10 and damaging the information collection device.

[0029] Based on the fact that the information collection device is installed inside the battery cell, the information collection device is particularly suitable for collecting the operating parameters of the battery cell, so as to feed back parameter information inside the battery cell in real time.

[0030] Because the information collection device is installed inside the battery cell, the housing 10 needs to have good corrosion resistance. Therefore, in this embodiment, to ensure the corrosion resistance of the housing 10, the housing 10 is injection molded using a corrosion-resistant material such as PET (Polyethylene Terephthalate), PP (Polypropylene), or PEA (amino-terminated polyoxypropylene).

[0031] As shown in Figures 2 and 3, in some embodiments, the air pressure sensor 20 includes a base 210 and a side wall 220, the side wall 220 is arranged in a ring shape around the periphery of the base 210, the side wall 220 and the base 210 form a surrounding mounting cavity, one side of the side wall 220 away from the base 210 is inserted into the first mounting hole 110, the air pressure chip 230 is mounted on the base 210, the base 210 is suitable for mounting on the circuit board 50, and the air pressure chip 230 is electrically connected to the circuit board 50, and a gel layer 410 and a sealing layer 420 are sequentially filled in the mounting cavity along a direction away from the base 210.

[0032] It can be understood that after the information collecting device is placed inside the battery cell, the air pressure sensor 20 can collect the air pressure parameters inside the battery cell, thereby realizing air pressure information collection.

[0033] 3, the base 210 of the air pressure sensor 20 is used to mount the chip 230 so as to obtain the air pressure parameters inside the battery cell to be sensed by the chip 230. A gel layer 410 and a sealing layer 420 are sequentially filled into the mounting cavity to realize sealing and protection of the mounting cavity.

[0034] Here, the outer surface of side wall 220 abuts against the wall surface of first mounting hole 110, and the outer surface of side wall 220 and the wall surface of first mounting hole 110 are bonded together with a sealing compound, thereby achieving a seal at the connection point between side wall 220 and housing 10. Gel layer 410 and sealing layer 420 filled inside side wall 220 can prevent corrosion by gas and protect barometric pressure sensor 20.

[0035] Here, the side wall 220 and the base 210 can be integrally molded. The side wall 220 has an annular structure, and it is sufficient that the side wall 220 can be adapted to the shape and size of the first mounting hole 110.

[0036] Here, the base 210 may be provided with some electrical connection parts 240, and the chip 230 can achieve electrical connection with the circuit board 50 through the electrical connection parts 240.

[0037] As shown in Figures 4 and 5, in some embodiments, a sealing plate 1120 is configured within the first mounting hole 110 to close the passage thereof, a first air hole 1130 is configured on the sealing plate 1120, the side wall 220 is engaged within the first mounting hole 110, and one side of the side wall 220 away from the base 210 abuts against the sealing plate 1120.

[0038] The housing 10 has an inspection area 1110 and a power supply mounting area, and the housing thickness of the housing 10 in the inspection area 1110 is greater than the housing thickness of the housing 10 in the power supply mounting area. The first mounting hole 110 is configured in the inspection area 1110 so that the first mounting hole 110 has a certain depth. Based on the fact that the first mounting hole 110 has a certain depth, the side wall 220 can be engaged within the first mounting hole 110 to realize a connection between the side wall 220 and the first mounting hole 110.

[0039] When the first mounting hole 110 is sealed by its own sealing plate 1120, a gap space can be formed between the sealing plate 1120 and the sealing layer 420. Based on the first air permeable hole 1130 provided on the sealing plate 1120, the gap space is air-conducted to the external space of the housing 10 via the first air permeable hole 1130, thereby realizing the acquisition of air pressure parameters.

[0040] Depending on the design of the sealing plate 1120, it is also possible to prevent the pressure sensor 20 from penetrating through the first mounting hole 110, thereby achieving the effect of limiting mounting.

[0041] Here, the sealing plate 1120 and the housing 10 are integrally formed. When the first mounting hole 110 is a circular hole, the sealing plate 1120 is a circular plate, and the side wall 220 is cylindrical.

[0042] As shown in Figure 5, in some embodiments, the sealing plate 1120 has an abutment portion 1140 extending toward the air pressure sensor 20, the abutment portion 1140 is spaced apart from the hole wall surface of the first mounting hole 110 and forms an engagement groove 1150, a stepped surface is formed on one side of the side wall 220 away from the base 210, the side wall 220 is engaged in the engagement groove 1150, and the stepped surface abuts against the abutment portion 1140.

[0043] Here, if the sealing layer 420 is flush with the stepped surface, after the side wall 220 is engaged with the first mounting hole 110, a portion of the side wall 220 is engaged in the engaging groove 1150, and the stepped surface of the side wall 220 abuts against the abutting portion 1140, thereby forming a gap space between the sealing layer 420 and the sealing plate 1120. The gap space enables the acquisition of air pressure parameters based on gas communication between the first air hole 1130 and the external space of the housing 10.

[0044] As shown in Figures 1 and 2, in some embodiments, the sealing component includes a first air permeable membrane 430, which is connected to the outer surface of the housing 10 and seals the first air permeable hole 1130, and a second air permeable membrane 430 that is permeable to gases and blocks liquids.

[0045] It can be understood that the first gas permeable membrane 430 is a semi-permeable membrane that allows gas to pass through but not liquid to pass through. As a result, after the information collection device of this embodiment is installed inside the battery cell, the electrolyte cannot pass through the first gas permeable membrane 430, preventing the electrolyte from entering the atmospheric pressure sensor 20 and enabling atmospheric pressure detection.

[0046] Here, the first gas permeable membrane 430 can be connected to the outer surface of the housing 10 by welding or the like.

[0047] As shown in FIG. 6 , in some embodiments, the sealing component includes a second air permeable membrane and a second sealing lid 460, the second sealing lid 460 has a second air permeable hole 470 formed therein, the second sealing lid 460 is engaged with the first mounting hole 110, the second air permeable membrane is connected to the second sealing lid 460 and seals the second air permeable hole 470, and the second air permeable membrane is adapted to allow gas to pass through and block liquid.

[0048] It can be understood that the second gas-permeable membrane is a semi-permeable membrane that allows gas to pass through but not liquid, so that after the information collection device of this embodiment is installed inside the battery cell, the electrolyte cannot pass through the second gas-permeable membrane, preventing the electrolyte from entering the atmospheric pressure sensor 20 and enabling atmospheric pressure detection.

[0049] Here, the second gas permeable membrane can be connected to the outer surface of the second sealing lid 460 by welding or the like.

[0050] By providing a second air permeable membrane on the second sealing lid 460 based on the second sealing lid 460 engaging and sealing the first mounting hole 110, the amount of second air permeable membrane used can be reduced, and the raw materials for the second air permeable membrane can be saved.

[0051] Here, after the second sealing lid 460 is engaged with the first mounting hole 110, it can be fixed to the housing 10 by methods such as adhesive bonding or ultrasonic welding to ensure a secure connection of the second sealing lid 460 and to ensure the sealing properties of the connection of the second sealing lid 460.

[0052] In some embodiments, a sealing groove 170 is formed on the outer surface of the housing 10, a first mounting hole 110 is formed in the groove bottom of the sealing groove 170, a connecting portion 180 is further formed in the groove bottom of the sealing groove 170, the connecting portion 180 is spaced apart from the first mounting hole 110, a central hole 190 and a notch 1100 communicating with the central hole 190 are formed in the connecting portion 180, the notch 1100 faces the first mounting hole 110, a second sealing lid 460 is engaged with the sealing groove 170, and the positions of the second air permeable hole 470 and the central hole 190 correspond to each other.

[0053] To obtain atmospheric pressure parameters, the second air vent can be connected to the space where the atmospheric pressure sensor 20 is located via the central hole 190, the notch 1100, and the internal space of the sealing groove 170. Based on the above arrangement, if the external second air permeable membrane fails or if a seal leak occurs and some liquid enters the sealing groove 170, the liquid may be located in the areas on both sides of the sealing groove 170, and the central hole 190 and the notch 1100 can always provide electrical communication between the space of the atmospheric pressure sensor 20 and the external space, preventing situations where atmospheric pressure parameters cannot be obtained.

[0054] As shown in Figures 1 and 2, in some embodiments, the information collection device further includes a temperature sensor 30, a second mounting hole 120 is formed in the housing 10, a fourth sealing lid 440 is connected in the second mounting hole 120, a connection hole 450 is formed in the fourth sealing lid 440, one end of the temperature sensor 30 is located in the housing 10, and the other end of the temperature sensor 30 penetrates the housing 10 from the connection hole 450, thereby acquiring temperature parameters outside the housing 10.

[0055] It can be seen that after the information collection device is placed inside the battery cell, the air pressure sensor 30 can collect air pressure parameters inside the battery cell, thereby realizing temperature information collection.

[0056] Here, the connection hole 450 of the fourth sealing cover 440 is used to penetrate and install the temperature sensor 30 so that one end of the temperature sensor 30 is located inside the housing 10 and electrically connected to the circuit board 50. The other end of the temperature sensor 30 penetrates the housing 10 from the connection hole 450 to collect the temperature inside the battery cell.

[0057] In some embodiments, the portion of the temperature sensor 30 that passes through the connection hole 450 is arranged to connect to a heat equalizer plate, and the heat equalizer plate is connected between two adjacent winding cores.

[0058] It can be seen that two adjacent winding cores are connected by a heat spreader plate, and the temperature of the heat spreader plate can be made to substantially correspond to the average temperature of the two adjacent winding cores through thermal conduction. The part of temperature sensor 30 that passes through connection hole 450 is connected to the heat spreader plate, so that temperature sensor 30 can directly obtain the temperature of the heat spreader plate, thereby reflecting the average temperature of the two adjacent winding cores and realizing the acquisition of temperature parameters.

[0059] In some embodiments, a heat equalizer plate can be installed on one side of the two winding cores facing each other, and the temperature sensor 30 can be extended between the two heat equalizer plates to obtain the temperature between the two heat equalizer plates, thereby reflecting the average temperature of the two adjacent winding cores and achieving the acquisition of temperature parameters.

[0060] In some embodiments, the second mounting hole 120 is spaced apart from the first mounting hole 110 to obtain barometric and temperature parameters at two different locations on the housing 10, respectively.

[0061] In some embodiments, the fourth sealing lid 440 is attached by engaging with the second mounting hole 120 on the one hand, and is also glued to the second mounting hole 120 on the other hand so that the fourth sealing lid 440 and the housing 10 form a good seal.

[0062] Here, the temperature sensor 30 may be thin, such as a sheet or film. For example, the temperature sensor 30 may be a thermistor or a thermal probe. The connection hole 450 on the fourth sealing lid 440 is sized to fit the temperature sensor 30. Because the temperature sensor 30 must pass through the connection hole 450, the size of the connection hole 450 is at least slightly larger than the size of the temperature sensor 30. Any gap between the connection hole 450 and the temperature sensor 30 can be closed with adhesive in a subsequent adhesive injection process to ensure a seal at the connection point between the temperature sensor 30 and the fourth sealing lid 440.

[0063] In some embodiments, where the temperature sensor 30 passes through the connection hole 450, there are multiple temperature collection points and a pressure intensity sensing unit integrated.

[0064] It can be understood that multiple temperature collection points can be realized to realize multiple temperature measurement points to improve the accuracy of temperature measurement. By integrating a pressure intensity sensing unit into the penetration part of the temperature sensor 30, the temperature sensor 30 can also measure pressure, thereby enhancing the functionality of the temperature sensor 30.

[0065] Here, each temperature collection point is provided with a temperature collection unit to acquire the temperature parameters of that point. The temperature collection points can be equally spaced along the length of the temperature sensor 30. Alternatively, the temperature collection points can be randomly distributed on the temperature sensor 30.

[0066] In some embodiments, the housing 10 may be configured with a plurality of second mounting holes 120, each corresponding to a connection to a corresponding fourth sealing cover 440 and a corresponding temperature sensor 30 passing through it. This allows the plurality of temperature sensors 30 to measure external temperature parameters, thereby improving the accuracy of temperature measurement. The plurality of temperature sensors 30 can therefore measure temperatures at different depths and positions within the battery cell, thereby accurately reflecting the temperature parameters within the battery cell.

[0067] In some embodiments, multiple information collection devices can be installed within the battery cell, and the multiple information collection devices can perform temperature measurements at different depths and positions within the battery cell, thereby accurately reflecting the temperature parameters within the battery cell.

[0068] Referring to FIG. 2 , in some embodiments, housing 10 is configured with adhesive injection hole 130 and exhaust hole 140 spaced apart, adhesive injection hole 130 is positioned to inject adhesive into housing 10, exhaust hole 140 is positioned to exhaust air from housing 10 when injecting adhesive, adhesive injection hole 130 is suitable for being sealed by first sealing portion 150, and exhaust hole 140 is suitable for being sealed by second sealing portion 160.

[0069] It can be seen that by injecting adhesive into the housing 10 through the adhesive injection hole 130, the components inside the housing 10 can be securely connected, while the housing 10 can be sealed via the adhesive and insulating protection can be achieved via the colloid.

[0070] During the adhesive injection process, the interior of the housing 10 is continuously filled with adhesive. Therefore, in order to ensure a balance of the air pressure inside the housing 10 and ensure that the adhesive can be properly filled inside the housing 10, the housing 10 is provided with an exhaust hole 140, which can balance the air pressure inside the housing 10 during the adhesive injection process. After the adhesive injection is completed, the adhesive injection hole 130 is closed by inserting the first sealing part 150 into the adhesive injection hole 130. The exhaust hole 140 is closed by inserting the second sealing part 160 into the exhaust hole 140.

[0071] Here, both the first sealing portion 150 and the second sealing portion 160 may be cylindrical. The first sealing portion 150 is engaged with the adhesive injection hole 130 and forms an adhesive bond with the adhesive injection hole 130 under the action of an adhesive. The second sealing portion 160 is engaged with the exhaust hole 140 and forms an adhesive bond with the exhaust hole 140 under the action of an adhesive.

[0072] Continuing with reference to FIG. 2 , in some embodiments, the information collection device further includes a circuit board 50. The circuit board 50 is disposed within the housing 10, and the air pressure sensor 20 and the temperature sensor 30 are mounted on the circuit board 50, with a signal transmission unit provided on the circuit board 50 for wirelessly transmitting parameter information to the terminal. The sensor mounting is achieved by providing the circuit board 50 and electrically connecting the air pressure sensor 20 and the temperature sensor 30 to the circuit board 50. Here, the air pressure sensor 20 and the temperature sensor 30 collect internal operating parameters of the battery cell, such as air pressure parameters and temperature parameters, respectively, and then the signal transmission unit on the circuit board 50 can transmit the parameter signals to the terminal for real-time recording, real-time display, etc.

[0073] Here, the signal transmitting unit may be a Bluetooth antenna. The terminal may be a mobile terminal such as a mobile phone, an iPad, an in-vehicle display, etc., or a fixed terminal such as a personal computer, a monitoring room, etc. It is understood that the terminal is provided with a signal receiving unit, e.g., a signal receiver, suitable for the signal transmitting unit to enable signal reception at the terminal. The terminal is also provided with a signal processing unit, e.g., a processor, to realize processing, storage, display, etc.

[0074] 2, in some embodiments, the circuit board 50 is provided with a mounting bracket 60 for connecting the battery 70. By connecting the battery 70 via the mounting bracket 60, the information collection device can avoid consuming electrical energy from the battery cells.

[0075] While conventional external information collection devices draw electricity from battery cells, conventional information collection devices consume the electrical energy of battery cells. Because the information collection device itself consumes power, and issues such as its reliability can increase power consumption and potentially affect the reliability of the battery cells, leading to problems such as failure of the battery cells themselves and self-discharge. In contrast, the information collection device of this embodiment supplies power directly via the internal battery 70. Unless the information collection device draws electricity from the battery cells, the information collection device does not consume the electrical energy of the battery cells, and there is no electrical connection between the two. This eliminates the above-mentioned problems.

[0076] It will be appreciated that providing the battery 70 inside the housing 10 and providing an independent power supply avoids putting the entire battery at risk due to a failure in the collection circuit, and ensures the reliability of the battery cells.

[0077] In some embodiments, the battery 70 may be a lithium primary battery 70 with high reliability and long life, and may have features such as compact size and long life. For example, the battery 70 may be a metal lithium primary battery 70 such as a lithium manganese dioxide battery 70 or a lithium sulfite chlorine battery 70. The number of batteries 70 may be one, two, or more. When a plurality of batteries 70 is used, the plurality of batteries 70 may be connected in parallel to the mounting bracket 60, or the plurality of batteries 70 may be connected in series to the mounting bracket 60. For example, the number of batteries 70 may be two, and the two batteries 70 may be connected in parallel to the mounting bracket 60.

[0078] In some embodiments, the battery 70 may be a soft pack battery 70, a stainless steel case battery 70, or the like. The battery 70 may be attached to the circuit board 50 via welding pieces, tabs, or the like, to connect the positive and negative terminals of the battery 70 to the circuit board 50 for power supply.

[0079] As shown in FIG. 2 , in some embodiments, the mounting bracket 60 includes a first connecting sheet 610 and a second connecting sheet 620 arranged relative to each other, the first connecting sheet 610 includes a third connecting sheet 630 that is folded toward the second connecting sheet 620, the third connecting sheet 630 is electrically connected to the circuit board 50, the second connecting sheet 620 includes a fourth connecting sheet 640 that extends toward the circuit board 50, the fourth connecting sheet 640 is electrically connected to the circuit board 50, and the battery 70 is sandwiched between the first connecting sheet 610 and the second connecting sheet 620.

[0080] The first connecting sheet 610 is disposed at a distance from the second connecting sheet 620, and the battery 70 is sandwiched between the first connecting sheet 610 and the second connecting sheet 620. The first connecting sheet 610 is electrically connected to the circuit board 50 via the third connecting sheet 630, and the second connecting sheet 620 is electrically connected to the circuit board 50 via the fourth connecting sheet 640. As a result, the battery 70 can supply power to the circuit board 50 via the first connecting sheet 610, the second connecting sheet 620, the third connecting sheet 630, and the fourth connecting sheet 640, thereby enabling the sensors and other components / parts located on the circuit board 50 to operate normally.

[0081] The gap between the first connecting sheet 610 and the second connecting sheet 620 can be appropriately selected based on the thickness of the battery 70. The gap between the first connecting sheet 610 and the second connecting sheet 620 may be set slightly smaller than the thickness of the battery 70 so that the first connecting sheet 610 and the second connecting sheet 620 can stably clamp and fix the battery 70.

[0082] The lengths of the first connecting sheet 610 and the second connecting sheet 620 can be appropriately selected based on the number of batteries 70. For example, when two batteries 70 are installed side by side, the length of the first connecting sheet 610 and the length of the second connecting sheet 620 are both greater than the total diameter of the two batteries 70.

[0083] First connecting sheet 610, second connecting sheet 620, third connecting sheet 630, and fourth connecting sheet 640 are all conductive metal pieces. For example, first connecting sheet 610, second connecting sheet 620, third connecting sheet 630, and fourth connecting sheet 640 are all copper pieces / copper plates. Here, first connecting sheet 610 is integrally molded with third connecting sheet 630, and second connecting sheet 620 is integrally molded with fourth connecting sheet 640.

[0084] Meanwhile, an embodiment of the present disclosure further provides a battery pack, which includes the information collection device in the above embodiment.

[0085] In this embodiment, the air pressure sensor 20 is mounted inside the housing 10, and at least a portion of the air pressure sensor 20 is engaged with the first mounting hole 110 to acquire air pressure parameters outside the housing 10 and achieve information collection. A sealing component seals the first mounting hole 110, ensuring good sealing performance of the housing 10 and allowing the information collection device to be built into the battery cell. Because the sealing component is permeable to gases but impervious to liquids, the air pressure sensor 20 can acquire air pressure parameters outside the housing 10 through the sealing component, achieving the collection of air pressure parameters. This allows the information collection device to collect information in an electrolyte environment, eliminating the technical problems that arise when the information collection device is installed externally, such as the complex structure and poor reliability of the battery cell cover plate.

[0086] The information collection device is located between the upper plate and the winding core within the battery cell, and is adjacent to the positive and negative electrode columns or non-metallic sealing components. Because the internal environment of the battery cell is filled with electrolyte, sealing based on the sealing components can prevent the electrolyte from penetrating into the housing 10 and damaging the information collection device.

[0087] Here, the information collection device may be installed in other areas inside the battery cell. For example, the information collection device may be installed in an area close to the bottom plate of the housing inside the battery cell. For example, the information collection device may be installed in an area close to the cover plate of the housing inside the battery cell. For example, the information collection device may be installed in an area close to the end plate of the housing inside the battery cell. For example, the information collection device may be installed in an area close to the side plate of the housing inside the battery cell.

[0088] The above has described in detail the embodiments of the present disclosure. Specific examples are used in this specification to explain the principles and implementation methods of the present disclosure. The above description of the embodiments is merely intended to help understand the method and spirit of the present disclosure. At the same time, those skilled in the art will understand that specific implementation methods and application scopes may vary based on the concept of the present disclosure. In summary, the contents of this specification should not be interpreted as limitations on the present disclosure. [Explanation of symbols]

[0089] 10: Housing 110: First mounting hole 120: Second mounting hole 130: Adhesive injection hole 140: Exhaust vent 150: First sealing portion 160: Second sealing portion 170: Sealing groove 180: Connection 190: Center hole 1100:Notch 1110: Inspection area 1120: Sealing plate 1130: First air hole 1140: Contact part 1150: Engagement groove 20: Barometric pressure sensor 210: Bass 220: Side wall 230: Chip 240: Electrical connection 30: Temperature sensor 410: Gel layer 420: Sealing layer 430: First air permeable membrane 440: 4th sealing lid 450: Connection hole 460:Second sealing lid 470: Second air hole 50: Circuit board 60: Mounting bracket 610: First connecting sheet 620: Second connecting sheet 630: 3rd connecting seat 640: 4th connecting seat 70: Battery

Claims

1. An information collection device, The device includes a housing, an air pressure sensor, and a sealing component. a first mounting hole is formed in the housing; the air pressure sensor is mounted in the housing, and at least a portion of the air pressure sensor is engaged with the first mounting hole to acquire an air pressure parameter outside the housing; the sealing component seals the first mounting hole, The sealing component is for allowing gas to pass through and blocking liquid. An information collection device characterized by:

2. the air pressure sensor includes a base and a sidewall; The side wall is annularly disposed around the periphery of the base, the side wall and the base together form a mounting cavity, and one side of the side wall away from the base is inserted into the first mounting hole, a pneumatic chip mounted on the base, the base adapted to be mounted on a circuit board, the pneumatic chip electrically connected to the circuit board, and a gel layer and a sealing layer sequentially filled in the mounting cavity along a direction away from the base; 2. The information collection device according to claim 1.

3. a sealing plate for closing the passage of the first mounting hole is formed in the first mounting hole, a first air hole is formed on the sealing plate, the side wall is engaged in the first mounting hole, and one side of the side wall away from the base abuts against the sealing plate; 3. The information collection device according to claim 2.

4. The sealing plate has an abutment portion extending toward the air pressure sensor, the abutment portion being spaced apart from the hole wall surface of the first mounting hole and forming an engagement groove, a stepped surface being formed on one side of the side wall away from the base, the side wall being engaged in the engagement groove, and the stepped surface abutting against the abutment portion.

4. The information collection device according to claim 3.

5. the sealing component includes a first air permeable membrane, the first air permeable membrane being connected to an outer surface of the housing and sealing the first air permeable hole; 4. The information collection device according to claim 3.

6. the sealing component includes a second air permeable membrane and a second sealing lid, a second air permeable hole is formed in the second sealing lid, the second sealing lid is engaged with the first mounting hole, and the second air permeable membrane is connected to the second sealing lid to seal the second air permeable hole; 2. The information collection device according to claim 1.

7. a sealing groove is formed on an outer surface of the housing, the first mounting hole is formed in a groove bottom surface of the sealing groove, a connecting portion is further formed in the groove bottom surface of the sealing groove, the connecting portion is provided at a distance from the first mounting hole, a central hole and a notch communicating with the central hole are formed in the connecting portion, the notch faces the first mounting hole, The second sealing lid is engaged with the sealing groove, and the second air hole and the central hole are positioned to correspond to each other.

7. The information collection device according to claim 6.

8. further comprising a temperature sensor; a second mounting hole is formed in the housing, a fourth sealing lid is connected to the second mounting hole, a connection hole is formed in the fourth sealing lid, one end of the temperature sensor is positioned inside the housing, and the other end of the temperature sensor penetrates the housing from the connection hole, thereby acquiring a temperature parameter outside the housing; 2. The information collection device according to claim 1.

9. The portion of the temperature sensor that passes through the connection hole is arranged to be connected to a heat equalizing plate, The heat equalizer plate is connected between two adjacent winding cores.

9. The information collection device according to claim 8.

10. A plurality of temperature collection points and a pressure intensity sensing unit are integrated at the portion where the temperature sensor passes through the connection hole.

9. The information collection device according to claim 8.

11. The housing is configured with an adhesive injection hole and an exhaust hole spaced apart, the adhesive injection hole is arranged to inject adhesive into the housing, and the exhaust hole is arranged to exhaust air from the housing when the adhesive is injected, the adhesive injection hole is suitable for being sealed by a first sealing portion, and the exhaust hole is suitable for being sealed by a second sealing portion.

2. The information collection device according to claim 1.

12. A battery pack, An information collection device according to any one of claims 1 to 11, A battery pack characterized by:

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