Information gathering 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 specifically to an information collection device and a battery pack.

Background Art

[0002] In related technologies, for the collection of information inside a battery cell, a method of usually installing a collection device externally is adopted. By installing the collection device outside the battery cell and insulating and penetrating the collection end of the collection device inside the battery cell, information collection is realized. However, in this method, it is necessary to modify 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] Embodiments of the present disclosure provide an information collection device and a battery pack, which can improve the sealing performance of the signal collection device, enable the signal collection device to be built into the battery, and improve the technical problems of the complex structure and insufficient reliability of the cover plate of the battery cell caused by the external installation of the information collection device.

[0004] In a first aspect, embodiments of the present disclosure provide an information collection device and a battery pack. The information collection device includes a housing, a pressure sensor, and a sealing component. A first mounting hole is formed in the housing. The pressure sensor is mounted inside the housing, and at least a part of the pressure sensor is engaged with the first mounting hole to obtain the air pressure parameter outside the housing. The sealing component seals the first mounting hole and is for blocking liquid while allowing gas to permeate.

[0005] In one embodiment, the pressure sensor includes a base and a side wall, the side wall being installed annularly around the base, the side wall and the base enclosing a mounting cavity, one side of the side wall away from the base being installed through a first mounting hole, a pressure chip mounted on the base, the base being suitable for mounting to a circuit board, the pressure chip being electrically connected to the circuit board, and a gel layer and a seal layer being sequentially filled into the mounting cavity along the direction away from the base.

[0006] In one embodiment, a sealing plate is provided within the first mounting hole to close its own passage, a first ventilation hole is provided on the sealing plate, the side wall is engaged with the first mounting hole, and one side of the side wall away from the base is in contact with the sealing plate.

[0007] In one embodiment, the sealing plate has a contact portion extending toward the direction of the pressure sensor, the contact portion is spaced apart from the hole wall surface of the first mounting hole and forms an engagement groove, and a stepped surface is formed on one side of the side wall away from the base, the side wall is engaged in the engagement groove and the stepped surface is in contact with the contact portion.

[0008] In one embodiment, the sealing component includes a first permeable membrane, the first permeable membrane being connected to the outer surface of the housing to seal the first vent.

[0009] In one embodiment, the sealing component includes a second permeable membrane and a second sealing lid, the second sealing lid having a second permeable hole, the second sealing lid engaging with the first mounting hole, and the second permeable membrane connecting to the second sealing lid to seal the second permeable hole.

[0010] In one embodiment, a sealing groove is formed on the outer surface of the housing, the first mounting hole is formed on the bottom surface of the sealing groove, a connecting portion is further formed on the bottom surface of the sealing groove, the connecting portion is spaced apart from the first mounting hole, the connecting portion has a central hole and a notch communicating with the central hole, the notch faces the first mounting hole, the second sealing lid engages with the sealing groove, and the positions of the second air vent and the central hole correspond.

[0011] In one embodiment, the information acquisition device further includes a temperature sensor, a second mounting hole is provided in the housing, a fourth sealing lid is connected to the second mounting hole, a connection hole is provided in the fourth sealing lid, one end of the temperature sensor is located inside the housing, and the other end of the temperature sensor penetrates the housing through the connection hole, thereby acquiring temperature parameters outside the housing.

[0012] In one embodiment, the portion of the temperature sensor that penetrates the connection hole is positioned to connect to a heat equalization plate, which is connected between two adjacent winding cores.

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

[0014] In one embodiment, 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, the exhaust hole is arranged to discharge air from inside the housing when the adhesive is injected, the adhesive injection hole is suitable to be sealed by a first sealing portion, and the exhaust hole is suitable to be sealed by a second sealing portion.

[0015] In one embodiment, the information acquisition device further includes a circuit board, the circuit board is mounted within the housing, the sensor is mounted on the circuit board, and a signal transmission unit is provided on the circuit board for wirelessly transmitting parameter information to a terminal.

[0016] In one embodiment, a mounting bracket is provided on the circuit board, and the mounting bracket is 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, wherein the first connecting sheet comprises a third connecting sheet that is bent in the direction of the second connecting sheet, the third connecting sheet being electrically connected to the circuit board, the second connecting sheet includes a fourth connecting sheet that extends toward the direction of the circuit board, the fourth connecting sheet being electrically connected to the circuit board, and the battery being provided sandwiched between the first connecting sheet and the second connecting sheet.

[0018] In a second aspect, the present invention provides a battery pack, which includes the information gathering device.

[0019] In the embodiments of this disclosure, a pressure sensor is mounted inside the housing, and at least a portion of the pressure sensor is engaged with a first mounting hole to acquire pressure parameters outside the housing and to collect information. The sealing component seals the first mounting hole, ensuring that the housing has good sealing properties, and the information collection device can be built into the battery cell. Since the sealing component can permeate gases while blocking liquids, the pressure sensor can acquire pressure parameters outside the housing through the sealing component, thereby enabling the collection of pressure parameters. This allows the information collection device to collect information in an electrolyte environment, improving the technical problems that arise when the information collection device is installed externally, such as the complex and unreliable structure of the battery cell's cover plate. [Brief explanation of the drawing]

[0020] To more clearly explain the technical concepts in the embodiments described herein, the following is a brief introduction to the drawings necessary for describing the embodiments. Clearly, the drawings in the following description represent only a selection of embodiments in this publication, and those skilled in the art can obtain other drawings based on these without expending any creative effort.

[0021] [Figure 1] It is a perspective view of an information collection device according to an embodiment of the present disclosure. [Figure 2] It is an exploded view of an information collection device according to an embodiment of the present disclosure. [Figure 3] It is a cross-sectional view of a pressure sensor according to an embodiment of the present disclosure. [Figure 4] It is a first schematic view of the structure of a housing according to an embodiment of the present disclosure. [Figure 5] It is an enlarged partial view of part A in FIG. 4. [Figure 6] It is a second schematic view of the structure of a housing according to an embodiment of the present disclosure.

Embodiments for Carrying Out the Invention

[0022] Hereinafter, in conjunction with the drawings in the embodiments of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described. Obviously, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present disclosure. Also, it should be understood that the specific implementation methods described herein are for the purpose of explaining and interpreting the present disclosure, and do not limit the present disclosure. In the present disclosure, unless otherwise stated, the orientation terms "upper" and "lower" usually refer to the up and down in the actual use or operating state of the device, specifically the directions in the drawings. "Inner" and "outer" are with respect to the contour of the device.

[0023] Specifically, referring to FIGS. 1 to 6, an embodiment of the present disclosure provides an information collection device. The information collection device includes a housing 10, a pressure sensor 20, and a sealing component. A first mounting hole 110 is formed in the housing 10. The pressure sensor 20 is mounted in the housing 10, and at least a part of the pressure sensor 20 is engaged with the first mounting hole 110 to obtain the air pressure parameters outside the housing 10. The sealing component seals the first mounting hole 110 and is for allowing gas to permeate and blocking liquid.

[0024] In this embodiment, the air pressure sensor 20 is installed in the housing 10, and at least a part of the air pressure sensor 20 is engaged with the first mounting hole 110, so as to obtain the air pressure parameters outside the housing 10 and realize information collection. The sealing component seals the first mounting hole 110, ensuring that the housing 10 has good sealing performance, and the information collection device can be built into the battery cell. Since the sealing component can allow gas to permeate and block liquid, the air pressure sensor 20 can obtain the air pressure parameters outside the housing 10 through the sealing component, realizing the collection of air pressure parameters. Thereby, the information collection device can collect information in the environment of the electrolyte, and can improve the technical problems of the complex structure and insufficient reliability of the cover plate of the battery cell caused by the external installation of the information collection device.

[0025] As shown in FIG. 2, in some embodiments, the housing 10 includes an outer shell and a bottom cover. The outer shell forms a cavity opening downward, and the bottom cover fits on the lower side of the outer shell and closes the opening of the cavity. Here, the first mounting hole 110 may be provided to open on one side where the outer shell is separated from the bottom cover.

[0026] As shown in FIG. 2, in some embodiments, a stepped surface is formed at the edge of the bottom cover on one side facing the outer shell. The bottom cover is engaged and connected to the outer shell based on the stepped surface, realizing the connection between the two. Thereby, the structure of the housing 10 becomes simple, the installation is convenient, and it can have direct compatibility with the existing main battery cell assembly production line.

[0027] In some embodiments, in order to ensure the sealing performance between the bottom cover and the outer shell, after being engaged and connected, they can also be welded and sealed by ultrasonic welding. Or a sealing ring may be provided at the connection location between the outer shell and the bottom cover to ensure the sealing performance between the outer shell and the bottom cover.

[0028] Here, the information acquisition device is particularly suitable for installation inside a battery cell. The information acquisition device is located between the upper plate and the winding core inside the battery cell, and is positioned in close proximity to the positive and negative electrode columns or non-metallic sealing components. Since the internal environment of the battery cell is filled with electrolyte, sealing based on the sealing components prevents the electrolyte from penetrating into the housing 10 and damaging the information acquisition device.

[0029] Based on the fact that the information acquisition device is installed inside the battery cell, the information acquisition device is particularly suitable for collecting the operating parameters of the battery cell in order to provide real-time feedback of parameter information inside the battery cell.

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

[0031] As shown in Figures 2 and 3, in some embodiments, the pressure sensor 20 includes a base 210 and a side wall 220, the side wall 220 being installed annularly around the base 210, the side wall 220 and the base 210 enclosing a mounting cavity, one side of the side wall 220 away from the base 210 being installed through a first mounting hole 110, a pressure chip 230 being mounted on the base 210, the base 210 being suitable for mounting to a circuit board 50, the pressure chip 230 being electrically connected to the circuit board 50, and a gel layer 410 and a seal layer 420 being sequentially filled into the mounting cavity along the direction away from the base 210.

[0032] After the information gathering device is placed inside the battery cell, the pressure sensor 20 can collect pressure parameters inside the battery cell, thereby enabling the collection of pressure information.

[0033] As shown in Figure 3, the base 210 of the pressure sensor 20 is used to mount the chip 230 so that it can acquire pressure parameters inside the battery cell to be sensed by the chip 230. Sealing and protection of the mounting cavity are achieved by sequentially filling the mounting cavity with a gel layer 410 and a seal layer 420.

[0034] Here, the outer surface of the side wall 220 abuts against the hole wall surface of the first mounting hole 110, and the outer surface of the side wall 220 and the hole wall surface of the first mounting hole 110 are bonded together by a sealing compound, thereby achieving a seal at the connection point between the side wall 220 and the housing 10. The gel layer 410 and sealing layer 420 filled inside the side wall 220 can prevent gas corrosion and protect the 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 to ensure that the side wall 220 can adapt to the shape and size of the first mounting hole 110.

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

[0037] As shown in Figures 4 and 5, in some embodiments, a sealing plate 1120 is provided within the first mounting hole 110 to close its own passage, a first ventilation hole 1130 is provided on the sealing plate 1120, a side wall 220 is engaged with 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 such 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 with the first mounting hole 110, and a connection between the side wall 220 and the first mounting hole 110 can be achieved.

[0039] When the first mounting hole 110 is sealed by its sealing plate 1120, a gap space can be formed between the sealing plate 1120 and the sealing layer 420. Based on the first air vent 1130 provided on the sealing plate 1120, the gap space is guided to the outside space of the housing 10 through the first air vent 1130, thereby enabling the acquisition of pressure parameters.

[0040] Based 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 providing an effect of mounting restriction.

[0041] Here, the sealing plate 1120 and the housing 10 are integrally molded. If 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 a contact portion 1140 extending toward the pressure sensor 20, the contact portion 1140 is spaced apart from the hole wall surface of the first mounting hole 110 and forms an engagement groove 1150, and 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 is in contact with the contact portion 1140.

[0043] Here, if the sealing layer 420 is coplanar with the stepped surface, after the side wall 220 engages with the first mounting hole 110, a portion of the side wall 220 engages with the engagement groove 1150, and the stepped surface of the side wall 220 abuts against the contact portion 1140, allowing the sealing layer 420 to form a gap space between itself and the sealing plate 1120. The gap space enables the acquisition of pressure parameters based on gas conduction between the first ventilation 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 permeable membrane 430, the first permeable membrane 430 is connected to the outer surface of the housing 10 to seal the first vent hole 1130, and the second permeable membrane 430 allows gas to pass through while blocking liquid.

[0045] The first permeable membrane 430 is a semipermeable membrane, meaning it can permeate gases but not liquids. As a result, after the information gathering device in this embodiment is installed inside the battery cell, the electrolyte cannot pass through the first permeable membrane 430, preventing the electrolyte from entering the pressure sensor 20 and enabling pressure detection.

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

[0047] As shown in Figure 6, in some embodiments, the sealing component includes a second permeable membrane and a second sealing lid 460, the second sealing lid 460 having a second permeable hole 470, the second sealing lid 460 engaging with the first mounting hole 110, the second permeable membrane connecting to the second sealing lid 460 to seal the second permeable hole 470, and the second permeable membrane is designed to allow gas to pass through while blocking liquid.

[0048] The second permeable membrane is a semipermeable membrane, meaning it can permeate gases but not liquids. As a result, after the information gathering device in this embodiment is installed inside the battery cell, the electrolyte cannot pass through the second permeable membrane, preventing the electrolyte from entering the pressure sensor 20 and enabling pressure detection.

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

[0050] Based on the fact that the second sealing lid 460 engages with and seals the first mounting hole 110, providing a second permeable membrane on the second sealing lid 460 reduces the amount of the second permeable membrane used and saves raw materials for the second permeable membrane.

[0051] Here, after the second sealing lid 460 is engaged with the first mounting hole 110, it can also 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 performance 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 on the bottom surface of the sealing groove 170, a connecting portion 180 is further formed on the bottom surface of the sealing groove 170, the connecting portion 180 is spaced apart from the first mounting hole 110, the connecting portion 180 has a central hole 190 and a notch 1100 communicating with the central hole 190, the notch 1100 faces the first mounting hole 110, the second sealing cover 460 engages with the sealing groove 170, and the positions of the second ventilation hole 470 and the central hole 190 correspond.

[0053] The second vent hole can be made conductive to the space where the pressure sensor 20 is located via the internal space of the central hole 190, notch 1100, and sealing groove 170 in order to enable the acquisition of pressure parameters. Based on the above arrangement, if the external second permeable membrane fails, or if a sealing leak occurs and some of the 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 notch 1100 can always conduct electricity between the space of the pressure sensor 20 and the external space, preventing situations in which pressure parameters cannot be acquired.

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

[0055] After the information gathering device is placed inside the battery cell, the pressure sensor 30 can collect pressure parameters inside the battery cell, thereby enabling the collection of temperature information.

[0056] Here, the connection hole 450 of the fourth sealing cover 440 is used to install the temperature sensor 30 through 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 passes through the housing 10 through the connection hole 450 to collect the temperature inside the battery cell.

[0057] In some embodiments, the portion of the temperature sensor 30 that penetrates the connection hole 450 is positioned to connect to a heat equalization plate, which is connected between two adjacent winding cores.

[0058] It can be understood that by connecting two adjacent cores with a heat equalizer plate, the temperature of the heat equalizer plate can be made to substantially correspond to the average temperature of the two adjacent cores through heat conduction. Based on the fact that the portion of the temperature sensor 30 that penetrates the connection hole 450 is connected to the heat equalizer plate, the temperature sensor 30 can directly acquire the temperature of the heat equalizer plate, thereby reflecting the average temperature of the two adjacent cores and enabling the acquisition of temperature parameters.

[0059] In some embodiments, a heat equalizer can be installed on one side of the two cores facing each other, and the temperature sensor 30 is extended between the two heat equalizers to obtain the temperature between the two heat equalizers, thereby reflecting the average temperature of the two adjacent cores and enabling 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 pressure parameters 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 by bonding 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 in a thin shape, 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. Based on the fact that the temperature sensor 30 needs to 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. The 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, there are multiple temperature collection points and a pressure intensity sensing unit integrated in the portion where the temperature sensor 30 penetrates the connection hole 450.

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

[0065] Here, a temperature collection unit is installed at each temperature collection point to acquire the temperature parameter of that point. Multiple temperature collection points can be installed at equal intervals along the longitudinal direction of the temperature sensor 30. Alternatively, multiple temperature collection points can be distributed randomly on the temperature sensor 30.

[0066] In some embodiments, the housing 10 may be configured with multiple second mounting holes 120, each of which is connected to one fourth sealing cover 440 and is configured to accommodate a temperature sensor 30. This improves the accuracy of temperature measurement by measuring external temperature parameters with multiple temperature sensors 30. Immediately, the multiple temperature sensors 30 can measure temperature at different depths and locations inside the battery cell, thereby accurately reflecting the temperature parameters inside the battery cell.

[0067] In some embodiments, multiple data collection devices can be installed inside the battery cell. By using these multiple devices to measure temperature at different depths and locations within the battery cell, the temperature parameters inside the battery cell can be accurately reflected.

[0068] Referring to Figure 2, in some embodiments, the housing 10 is configured with an adhesive injection hole 130 and an exhaust hole 140 spaced apart, the adhesive injection hole 130 is positioned to inject adhesive into the housing 10, and the exhaust hole 140 is positioned to expel air from inside the housing 10 when the adhesive is injected, the adhesive injection hole 130 is suitable to be sealed by a first sealing portion 150, and the exhaust hole 140 is suitable to be sealed by a second sealing portion 160.

[0069] It can be understood 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 provided via the colloid.

[0070] During the adhesive injection process, the inside of the housing 10 is continuously filled with adhesive. To ensure a balance of air pressure inside the housing 10 and to ensure that the adhesive is properly filled inside the housing 10, an exhaust hole 140 is provided in the housing 10, thereby balancing the air pressure inside the housing 10 during the adhesive injection process. After the adhesive injection is complete, the adhesive injection hole 130 is closed by inserting the first sealing part 150 through it. The exhaust hole 140 is closed by inserting the second sealing part 160 through it.

[0071] Here, both the first sealing portion 150 and the second sealing portion 160 may be installed in a cylindrical shape. The first sealing portion 150 engages with the adhesive injection hole 130 and forms adhesion with the adhesive injection hole 130 under the action of the adhesive. The second sealing portion 160 engages with the exhaust hole 140 and forms adhesion with the exhaust hole 140 under the action of the adhesive.

[0072] Referring to Figure 2, in some embodiments, the information acquisition device further includes a circuit board 50. The circuit board 50 is housed within the housing 10, and the pressure sensor 20 and temperature sensor 30 are mounted on the circuit board 50. The circuit board 50 is provided with a signal transmission unit for wirelessly transmitting parameter information to a terminal. The sensors are mounted by providing the circuit board 50 and electrically connecting the pressure sensor 20 and temperature sensor 30 to the circuit board 50. Here, after the pressure sensor 20 and temperature sensor 30 collect operating parameters inside the battery cell, such as pressure parameters and temperature parameters, respectively, 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 transmission unit may be a Bluetooth antenna. The terminal may be a mobile device such as a mobile phone, iPad, or in-car display, or a fixed terminal such as a personal computer or monitoring room. It can be understood that the terminal is equipped with a signal receiving unit suitable for the signal transmission unit, such as a signal receiver, to enable signal reception at the terminal. The terminal is also equipped with a signal processing unit such as a processor to perform processing, storage, and display.

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

[0075] Unlike conventional external data acquisition devices that draw power from battery cells, conventional data acquisition devices consume the electrical energy of the battery cells. Because the data acquisition device itself consumes power, and due to reliability issues, this can increase power consumption and potentially affect the reliability of the battery cells, leading to problems such as battery cell failure and self-discharge. In contrast, the data acquisition device in this embodiment is powered directly through the internal battery 70, and does not draw power from the battery cells. As a result, the data acquisition device does not consume the electrical energy of the battery cells, and there is no electrical connection between the two. This prevents the problems described above.

[0076] It is understood that by providing the battery 70 inside the housing 10 and supplying power independently, risks to the entire battery due to a failure in the collection circuit are avoided, and the reliability of the battery cells is ensured.

[0077] In some embodiments, the battery 70 can be a highly reliable, long-life lithium primary battery 70, which offers features such as miniaturization and extended lifespan. Examples include metallic lithium primary batteries 70 such as lithium-manganese dioxide batteries 70 and lithium chlorine sulfite batteries 70. The number of batteries 70 may be set to one, two or more. If there are multiple batteries 70, the multiple batteries 70 may be connected in parallel to the mounting bracket 60, or the multiple batteries 70 may be connected in series to the mounting bracket 60. For example, the number of batteries 70 may be set to 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 housing battery 70, or the like. Power is supplied to the circuit board 50 by removing the welded piece, tab, etc. from the battery 70.

[0079] As shown in Figure 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, wherein the first connecting sheet 610 has a third connecting sheet 630 that is bent toward the second connecting sheet 620, and the third connecting sheet 630 is electrically connected to the circuit board 50, and the second connecting sheet 620 includes a fourth connecting sheet 640 that extends toward the circuit board 50, and the fourth connecting sheet 640 is electrically connected to the circuit board 50, and the battery 70 is provided sandwiched between the first connecting sheet 610 and the second connecting sheet 620.

[0080] A first connecting sheet 610 is provided with a gap between it and a second connecting sheet 620, and a battery 70 is provided sandwiched between the first connecting sheet 610 and the second connecting sheet 620. Here, the first connecting sheet 610 is electrically connected to the circuit board 50 via a third connecting sheet 630, and the second connecting sheet 620 is electrically connected to the circuit board 50 via a 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 spacing 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 spacing between the first connecting sheet 610 and the second connecting sheet 620 should be 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, if there are two batteries 70 and they are installed side by side, the lengths of both the first connecting sheet 610 and the second connecting sheet 620 are greater than the total diameter of the two batteries 70.

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

[0084] On the other hand, embodiments of the present disclosure further provide a battery pack, which includes the information acquisition device in the above-described embodiment.

[0085] In this embodiment, the pressure sensor 20 is mounted inside the housing 10, and at least a portion of the pressure sensor 20 is engaged with the first mounting hole 110 to acquire pressure parameters outside the housing 10 and to collect information. The sealing component seals the first mounting hole 110, ensuring that the housing 10 has good sealing properties, and the information collection device can be built into the battery cell. Since the sealing component can permeate gases while blocking liquids, the pressure sensor 20 can acquire pressure parameters outside the housing 10 through the sealing component, thereby realizing the collection of pressure parameters. As a result, the information collection device can collect information in the electrolyte environment, improving the technical problems that arise when the information collection device is installed externally, such as the complex and unreliable structure of the battery cell's cover plate.

[0086] Here, the information acquisition device is installed between the upper plate and the core within the battery cell and is located in close proximity to the positive and negative electrode columns or non-metallic sealing components. Since the internal environment of the battery cell is filled with electrolyte, sealing based on the sealing components prevents the electrolyte from penetrating into the housing 10 and damaging the information acquisition device.

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

[0088] The above has described the embodiments of the present disclosure in detail. In this specification, specific examples are used to explain the principles and implementation methods of the present disclosure. The description of the above embodiments is only helpful for understanding the method and the gist of the present disclosure. At the same time, for those skilled in the art, there are changes in specific implementation manners and application scopes based on the idea of the present disclosure. Summarizing the above, the content of this specification should not be construed as a limitation to the present disclosure.

Description of Reference Numerals

[0089] 10: Housing 110: First Mounting Hole 120: Second Mounting Hole 130: Adhesive Injection Hole 140: Exhaust Hole 150: First Sealing Portion 160: Second Sealing Portion 170: Sealing Groove 180: Connection Portion 190: Central Hole 1100: Notch 1110: Inspection Region 1120: Sealing Plate 1130: First Vent Hole 1140: Contact Portion 1150: Engagement Groove 20: Pressure Sensor 210: Base 220: Side Wall 230: Chip 240: Electrical Connection Portion 30: Temperature Sensor 410: Gel Layer 420: Seal Layer 430: First Permeable Membrane 440: Fourth Sealing Cover 450: Connection Hole 460: Second Sealing Cover 470: Second Vent Hole 50: Circuit Board 60: Mounting Bracket 610: First Connecting Sheet 620: Second Connecting Sheet 630: Third Connecting Sheet 640: Fourth Connecting Sheet 70: Battery

Claims

1. An information gathering device, It includes a housing, a pressure sensor, and a sealing component. The housing is provided with a first mounting hole, The pressure sensor is mounted inside the housing, and at least a portion of the pressure sensor is engaged with the first mounting hole, thereby acquiring pressure parameters outside the housing. The sealing component seals the first mounting hole, The aforementioned sealing component is designed to allow gas to pass through while blocking liquid, The pressure sensor includes a base and a side wall, The side wall is installed in an annular manner around the base, and the side wall and the base surround and form a mounting cavity, with one side of the side wall away from the base being installed through the first mounting hole. A pressure chip is mounted on the base, the base is suitable for mounting to a circuit board, the pressure chip is electrically connected to the circuit board, and a gel layer and a sealing layer are sequentially filled into the mounting cavity in a direction away from the base. An information gathering device characterized by the following features.

2. A sealing plate is provided within the first mounting hole to close its own passage, a first ventilation hole is provided on the sealing plate, the side wall engages with the first mounting hole, and one side of the side wall away from the base abuts against the sealing plate. The information gathering device according to feature 1.

3. The sealing plate has a contact portion extending toward the direction of the pressure sensor, the contact portion is provided at a distance from the hole wall surface of the first mounting hole and forms an engagement groove, a stepped surface is formed on one side of the side wall away from the base, the side wall is engaged in the engagement groove and the stepped surface is in contact with the contact portion, The information gathering device according to feature 2.

4. The sealing component includes a first permeable membrane, and the first permeable membrane is connected to the outer surface of the housing to seal the first permeable hole. The information gathering device according to feature 2.

5. The sealing component includes a second permeable membrane and a second sealing lid, the second sealing lid has a second permeable hole, the second sealing lid engages with the first mounting hole, and the second permeable membrane connects to the second sealing lid to seal the second permeable hole. The information gathering device according to feature 1.

6. A sealing groove is formed on the outer surface of the housing, the first mounting hole is formed on the bottom surface of the sealing groove, a connecting portion is further formed on the bottom surface of the sealing groove, the connecting portion is spaced apart from the first mounting hole, the connecting portion has a central hole and a notch communicating with the central hole, and the notch faces the first mounting hole. The second sealing lid engages with the sealing groove, and the positions of the second air vent and the central hole correspond. The information gathering device according to feature 5.

7. It further includes a temperature sensor, A second mounting hole is provided in the housing, a fourth sealing lid is connected to the second mounting hole, a connection hole is provided in the fourth sealing lid, one end of the temperature sensor is located inside the housing, and the other end of the temperature sensor penetrates the housing through the connection hole, thereby acquiring temperature parameters from outside the housing. The information gathering device according to feature 1.

8. The portion of the temperature sensor that penetrates the connection hole is positioned to be connected to the heat equalization plate. The heat distribution plate is connected between two adjacent winding cores. The information gathering device according to feature 7.

9. The portion of the temperature sensor through the connection hole has multiple temperature collection points, and a pressure intensity sensing unit is integrated therein. The information gathering device according to feature 7.

10. 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 discharge air from inside 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. The information gathering device according to feature 1.

11. It is a battery pack, An information collection device including the one described in any one of claims 1 to 10, A battery pack characterized by the following features.

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