Information acquisition device and battery pack

Abstract

The utility model relates to the technical field of batteries, and provides an information acquisition device and a battery pack. The information acquisition device comprises a shell, an air pressure sensor and a sealing piece. The housing is configured with a first mounting hole. The air pressure sensor is installed in the shell, and at least part of the air pressure sensor is clamped in the first installation hole so as to obtain air pressure parameters outside the shell. The sealing piece seals the first mounting hole, and the sealing piece is used for gas permeation and liquid blocking. Therefore, the information acquisition device is arranged in the battery cell, so that the information acquisition device can perform information acquisition in an electrolyte environment, and the technical problems of complex structure and insufficient reliability of a battery cell cover plate caused by external arrangement of the information acquisition device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to an information collection device and a battery pack. Background Art

[0002] In the related art, the collection of internal information of the battery cell usually adopts the solution of placing the collection device externally. The collection device is set outside the battery cell, and the collection end of the collection device is insulated and penetrated into the battery cell to realize information collection. However, this method will modify the cover plate and other parts of the battery cell, increase the complexity of the cover plate and have the risk of reducing the reliability of the cover plate. Utility Model Content

[0003] The embodiments of the utility model provide an information acquisition device and a battery pack, which can improve the sealing of the signal acquisition device so that the signal acquisition device can be built into the battery, thereby improving the technical problem of complex cell cover structure and insufficient reliability caused by the external placement of the information acquisition device.

[0004] In a first aspect, an embodiment of the present utility model provides an information collection device, comprising:

[0005] A housing having a first mounting hole;

[0006] An air pressure sensor is installed in the housing, and at least a portion of the air pressure sensor is snapped into the first mounting hole to obtain air pressure parameters outside the housing;

[0007] A sealing member is used to seal the first mounting hole, wherein the sealing member is used to allow gas to pass through and block liquid.

[0008] In one embodiment, the air pressure sensor comprises:

[0009] Pedestal;

[0010] A side wall is arranged around the circumference of the base, the side wall and the base are combined to form a mounting cavity, and a side of the side wall away from the base is penetrated into the first mounting hole;

[0011] A pneumatic chip is installed on the base, the base is suitable for being installed on a circuit board, the pneumatic chip is electrically connected to the circuit board, and the installation cavity is filled with a gel layer and a sealing layer in sequence in a direction away from the base.

[0012] In one embodiment, a sealing plate for closing its own channel is constructed in the first mounting hole, and a first air vent is constructed on the sealing plate, wherein the side wall is clamped in the first mounting hole, and the side of the side wall away from the base abuts against the sealing plate.

[0013] In one embodiment, the sealing plate has an abutment portion extending in the direction of the air pressure sensor, the abutment portion is spaced apart from the hole wall surface of the first mounting hole, and forms a slot, the side wall is configured with a step surface on the side away from the base, the side wall is snapped into the slot, and the step surface is butted against the abutment portion.

[0014] In one embodiment, the sealing member includes a first breathable membrane, which is connected to the outer surface of the shell and seals the first breathable hole.

[0015] In one embodiment, the sealing member includes a second breathable membrane and a second sealing cover, the second sealing cover is configured with a second breathable hole, wherein the second sealing cover is snapped into the first mounting hole, and the second breathable membrane is connected to the second sealing cover and seals the second breathable hole.

[0016] In one embodiment, a sealing groove is configured on the outer surface of the housing, and the first mounting hole is formed on the bottom surface of the sealing groove, wherein the bottom surface of the sealing groove is further configured with a connecting portion, the connecting portion is spaced apart from the first mounting hole, the connecting portion is configured with a center hole and a notch connected to the center hole, and the notch faces the first mounting hole;

[0017] Wherein, the second sealing cover is clamped in the sealing groove, and the second air hole corresponds to the position of the central hole.

[0018] In one embodiment, the information collection device further includes:

[0019] A temperature sensor, wherein the shell is provided with a second mounting hole, a fourth sealing cover is connected to the second mounting hole, a connecting hole is provided on the fourth sealing cover, one end of the temperature sensor is located in the shell, and the other end of the temperature sensor passes through the shell from the connecting hole to obtain temperature parameters outside the shell.

[0020] In one embodiment, the portion of the temperature sensor passing through the connection hole is configured to be connected to a vapor chamber, and the vapor chamber is connected between two adjacent winding cores.

[0021] In one embodiment, the portion of the temperature sensor passing through the connecting hole has a plurality of temperature collection points and is integrated with a pressure sensing unit.

[0022] In one embodiment, the shell is provided with injection holes and exhaust holes at intervals, the injection holes are configured to inject adhesive into the shell, and the exhaust holes are configured to exhaust air in the shell when the adhesive is injected, wherein the injection holes are suitable for being sealed by a first sealing portion, and the exhaust holes are suitable for being sealed by a second sealing portion.

[0023] In one embodiment, the information collection device further includes:

[0024] A circuit board is arranged in the housing, the sensor is installed on the circuit board, and a signal sending unit is arranged on the circuit board for wirelessly sending parameter information to the terminal.

[0025] In one embodiment, a mounting bracket is provided on the circuit board, and the mounting bracket is used to connect a battery.

[0026] In one embodiment, the mounting bracket comprises:

[0027] A first connecting piece and a second connecting piece are arranged opposite to each other, wherein the first connecting piece is configured with a third connecting piece bent toward the second connecting piece, the third connecting piece is electrically connected to the circuit board, and the second connecting piece is configured with a fourth connecting piece extending toward the circuit board, the fourth connecting piece is electrically connected to the circuit board;

[0028] Wherein, the battery is clamped between the first connecting piece and the second connecting piece.

[0029] In a second aspect, an embodiment of the present utility model provides a battery pack, comprising the aforementioned information collection device.

[0030] Beneficial effects of the embodiments of the utility model:

[0031] In an embodiment of the utility model, the air pressure sensor is installed in the shell, and at least a part of the air pressure sensor is clamped in the first mounting hole, so as to obtain the air pressure parameters outside the shell, and realize information collection. The first mounting hole is sealed based on the seal to ensure that the shell has good sealing properties, so that the information collection device is built into the battery cell. Since the seal can pass through the gas and block the liquid, the air pressure sensor can obtain the air pressure parameters outside the shell through the seal, and realize the collection of air pressure parameters. In this way, the information collection device can collect information in the environment of the electrolyte, thereby improving the technical problem of complex structure and insufficient reliability of the battery cover plate caused by the external placement of the information collection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a three-dimensional schematic diagram of an information collection device provided by an embodiment of the utility model;

[0034] Figure 2 It is an exploded diagram of the information collection device provided by the embodiment of the utility model;

[0035] Figure 3 It is a cross-sectional view of an air pressure sensor provided in an embodiment of the utility model.

[0036] Figure 4 This is one of the structural schematic diagrams of the housing provided in the embodiment of the utility model.

[0037] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle.

[0038] Figure 6 This is the second structural schematic diagram of the housing provided in the embodiment of the utility model.

[0039] Reference numerals:

[0040] 10-housing, 110-first mounting hole, 120-second mounting hole, 130-glue injection hole, 140-exhaust hole, 150-first sealing part, 160-second sealing part, 170-sealing groove, 180-connecting part, 190-center hole, 1100-notch, 1110-detection area, 1120-sealing plate, 1130-first air hole, 1140-abutting part, 1150-card slot, 20-air pressure sensor, 210-base, 220-side wall, 230-chip, 240-electrical connection part, 30-temperature sensor, 410-gel layer, 420-sealing layer, 430-first breathable membrane, 440-fourth sealing cover, 450-connecting hole, 460-second sealing cover, 470-second breathable hole, 50-circuit board, 60-mounting bracket, 610-first connecting plate, 620-second connecting plate, 630-third connecting plate, 640-fourth connecting plate, 70-battery. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0042] For details, please refer to Figure 1-Figure 6 The embodiment of the utility model provides an information collection device. The information collection device includes a housing 10, an air pressure sensor 20 and a sealing member. The housing 10 is configured with a first mounting hole 110. The air pressure sensor 20 is installed in the housing 10, and at least a portion of the air pressure sensor 20 is snapped into the first mounting hole 110 to obtain air pressure parameters outside the housing 10. The sealing member seals the first mounting hole 110, wherein the sealing member is used to pass gas and block liquid.

[0043] In this embodiment, the air pressure sensor 20 is installed in the housing 10, and at least a portion of the air pressure sensor 20 is snapped into the first mounting hole 110, so as to obtain the air pressure parameters outside the housing 10 and realize information collection. The first mounting hole 110 is sealed based on the seal to ensure that the housing 10 has good sealing properties, so that the information collection device is built into the battery cell. Since the seal can pass through gas and block liquid, the air pressure sensor 20 can obtain the air pressure parameters outside the housing 10 through the seal, so as to realize the collection of air pressure parameters. In this way, the information collection device can collect information in the environment of electrolyte, thereby improving the technical problem of complex structure and insufficient reliability of the battery cover plate caused by the external placement of the information collection device.

[0044] like Figure 2 As shown, in some embodiments, the housing 10 includes an outer shell and a bottom cover, the outer shell forms a cavity with an opening facing downward, and the bottom cover covers the lower side of the outer shell and closes the opening of the cavity. The first mounting hole 110 can be opened on a side of the outer shell away from the bottom cover.

[0045] like Figure 2 As shown, in some embodiments, the edge of the bottom cover facing the outer shell is configured with a step surface, and the bottom cover is snap-connected to the outer shell based on the step surface, thereby achieving the connection between the two. Thus, the shell 10 has a simple structure and is easy to install, and can be directly compatible with the existing main battery cell assembly production line.

[0046] In some embodiments, after the bottom cover and the housing are snap-fitted, ultrasonic welding can be used to seal the bottom cover and the housing to ensure the sealing between the bottom cover and the housing. Alternatively, a sealing ring can be provided at the connection between the housing and the bottom cover to ensure the sealing between the housing and the bottom cover.

[0047] Among them, the information collection device is particularly suitable for installation inside the battery cell. The information collection device is located between the upper plate and the winding core in the battery cell, and is located near the positive and negative poles or non-metallic seals. Since the internal environment of the battery cell is full of electrolyte, after sealing based on the seal, it can prevent the electrolyte from penetrating into the shell 10 and causing damage to the information collection device.

[0048] Since the information collection device is arranged inside the battery cell, the information collection device is particularly suitable for collecting the working parameters of the battery cell to provide real-time feedback of the parameter information inside the battery cell.

[0049] Since the information collection device is arranged inside the battery cell, the housing 10 needs to have good corrosion resistance. Therefore, in this embodiment, the housing 10 is injection molded with corrosion-resistant materials such as PET (Polyethylene Terephthalate), PP (Polypropylene), and PEA (amino-terminated polyoxypropylene) to ensure the corrosion resistance of the housing 10.

[0050] like Figure 2 and Figure 3 As shown, in some embodiments, the air pressure sensor 20 includes a base 210 and a side wall 220. The side wall 220 is arranged around the base 210, and the side wall 220 and the base 210 are enclosed to form a mounting cavity, and the side of the side wall 220 away from the base 210 is penetrated in the first mounting hole 110. Among them, an air pressure chip 230 is installed on the base 210, and the base 210 is suitable for being installed on the circuit board 50. The air pressure chip 230 is electrically connected to the circuit board 50, and the mounting cavity is filled with a gel layer 410 and a sealing layer 420 in sequence in a direction away from the base 210.

[0051] It can be understood that after the information collection device is placed inside the battery cell, the air pressure sensor 20 can collect the air pressure parameters inside the battery cell, thereby realizing the air pressure information collection.

[0052] like Figure 3 As shown, the base 210 of the air pressure sensor 20 is used to install the chip 230 to obtain the air pressure parameters inside the battery cell by sensing the chip 230. The installation cavity is filled with a gel layer 410 and a sealing layer 420 in sequence to achieve sealing and protection of the installation cavity.

[0053] 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 by a sealant to achieve sealing at the connection between the side wall 220 and the housing 10. The gel layer 410 and the sealing layer 420 filled inside the side wall 220 can prevent gas corrosion and protect the air pressure sensor 20.

[0054] The side wall 220 and the base 210 can be integrally formed. The side wall 220 is a ring-shaped structure, so that the side wall 220 can adapt to the shape and size of the first mounting hole 110.

[0055] Among them, a plurality of electrical connection parts 240180 may be provided on the base 210 , and the chip 230 may be electrically connected to the circuit board 50 through the electrical connection parts 240180 .

[0056] like Figure 4 and Figure 5 As shown, in some embodiments, a sealing plate 1120 for closing its own channel is constructed in the first mounting hole 110, and a first air vent 1130 is constructed on the sealing plate 1120, wherein the side wall 220 is snapped into the first mounting hole 110, and the side of the side wall 220 away from the base 210 abuts against the sealing plate 1120.

[0057] The housing 10 has a detection area 1110 and a power supply installation area, and the shell thickness of the housing 10 at the detection area 1110 is greater than the shell thickness of the housing 10 at the power supply installation area. The first mounting hole 110 is configured in the detection area 1110 so that the first mounting hole 110 has a certain depth. Based on the first mounting hole 110 having a certain depth, the side wall 220 can be snapped into the first mounting hole 110 to achieve the connection between the side wall 220 and the first mounting hole 110.

[0058] The first mounting hole 110 is sealed by its own sealing plate 1120, so that a gap space can be formed between the sealing plate 1120 and the sealing layer 420. Based on the first air hole 1130 opened on the sealing plate 1120, the gap space can be connected to the external space of the housing 10 through the first air hole 1130 to obtain the air pressure parameters.

[0059] Based on the design of the sealing plate 1120, it is also possible to prevent the air pressure sensor 20 from passing through the first mounting hole 110, thereby achieving the effect of assembly limiting.

[0060] The sealing plate 1120 is formed integrally with the housing 10. If the first mounting hole 110 is a circular hole, the sealing plate 1120 is a circular plate, and the side wall 220 is a cylindrical shape.

[0061] like Figure 5 As shown, in some embodiments, the sealing plate 1120 has an abutment portion 1140 extending toward the direction of 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 a slot 1150, and the side wall 220 is constructed with a step surface on the side away from the base 210, the side wall 220 is snapped into the slot 1150, and the step surface is docked with the abutment portion 1140.

[0062] The sealing layer 420 is flush with the stepped surface, so when the side wall 220 is snapped into the first mounting hole 110, a portion of the side wall 220 will be snapped into the slot 1150, and the stepped surface of the side wall 220 will abut against the abutting portion 1140, so that a gap space can be formed between the sealing layer 420 and the sealing plate 1120. The gap space is connected to the external space of the housing 10 based on the first air hole 1130, so that the air pressure parameters can be obtained.

[0063] like Figure 1 and Figure 2 As shown, in some embodiments, the seal includes a first breathable membrane 430 , which is connected to the outer surface of the housing 10 and seals the first breathable hole 1130 , and the first breathable membrane 430 is used to pass gas and block liquid.

[0064] It is understandable that the first air permeable membrane 430 is a semi-permeable membrane, which can pass gas but not liquid. Therefore, when the information acquisition device in this embodiment is arranged inside the battery cell, the electrolyte will not be able to pass through the first air permeable membrane 430, which can prevent the electrolyte from entering the air pressure sensor 20 and realize air pressure detection.

[0065] The first air permeable membrane 430 may be connected to the outer surface of the housing 10 by welding or other methods.

[0066] like Figure 6 As shown, in some embodiments, the seal includes a second breathable membrane and a second sealing cover 460, and the second sealing cover 460 is configured with a second breathable hole 470, wherein the second sealing cover 460 is snapped into the first mounting hole 110, the second breathable membrane is connected to the second sealing cover 460 and seals the second breathable hole 470, and the second breathable membrane is used to pass gas and block liquid.

[0067] It is understandable that the second breathable membrane is a semi-permeable membrane, which can pass gas but not liquid. Therefore, when the information acquisition device in this embodiment is arranged inside the battery cell, the electrolyte will not be able to pass through the second breathable membrane, which can prevent the electrolyte from entering the air pressure sensor 20 and realize air pressure detection.

[0068] The second breathable membrane may be connected to the outer surface of the second sealing cover 460 by welding or other methods.

[0069] By clamping and sealing the first mounting hole 110 based on the second sealing cover 460 and arranging a second breathable membrane on the second sealing cover 460 , the usage of the second breathable membrane can be reduced, and the raw materials of the second breathable membrane can be saved.

[0070] After being clamped in the first mounting hole 110 , the second sealing cover 460 can also be fixed to the housing 10 by bonding, ultrasonic welding, etc., so as to achieve a reliable connection of the second sealing cover 460 and ensure the sealing of the connection of the second sealing cover 460 .

[0071] In some embodiments, the outer surface of the housing 10 is configured with a sealing groove 170, and the first mounting hole 110 is formed at the bottom surface of the sealing groove 170, wherein the bottom surface of the sealing groove 170 is further configured with a connecting portion 180, the connecting portion 180 is spaced apart from the first mounting hole 110, and the connecting portion 180 is configured with a central hole 190 and a notch 1100 connected to the central hole 190, and the notch 1100 faces the first mounting hole 110. The second sealing cover 460 is clamped to the sealing groove 170, and the second vent hole 470 corresponds to the position of the central hole 190.

[0072] The second vent hole can be connected to the space where the air pressure sensor 20 is located through the center hole 190, the notch 1100, and the internal space of the sealing groove 170 to achieve the acquisition of air pressure parameters. Based on the above arrangement, when the external second air permeable membrane fails or a seal leak occurs, causing part of the liquid to enter the sealing groove 170, the liquid can be located in the area on both sides of the sealing groove 170, so that the center hole 190 and the notch 1100 can always connect the space of the air pressure sensor 20 and the external space, and prevent the situation where the air pressure parameters cannot be acquired.

[0073] like Figure 1 and Figure 2 As shown, in some embodiments, the information acquisition device further includes a temperature sensor 30. The housing 10 is configured with a second mounting hole 120, a fourth sealing cover 440 is connected to the second mounting hole 120, a connecting hole 450 is configured on the fourth sealing cover 440, one end of the temperature sensor 30 is located in the housing 10, and the other end of the temperature sensor 30 passes through the housing 10 from the connecting hole 450 to obtain the temperature parameters outside the housing 10.

[0074] It is understandable that after the information collection device is placed inside the battery cell, the temperature sensor 30 can collect the temperature parameters inside the battery cell to realize temperature information collection.

[0075] The connection hole 450 of the fourth sealing cover 440 is used to pass the temperature sensor 30, so that one end of the temperature sensor 30 is located inside the housing 10 and is electrically connected to the circuit board 50. The other end of the temperature sensor 30 passes through the housing 10 from the connection hole 450 to collect the temperature inside the battery cell.

[0076] In some embodiments, the portion of the temperature sensor 30 passing through the connection hole 450 is configured to be connected to a vapor chamber, and the vapor chamber is connected between two adjacent winding cores.

[0077] It is understandable that by connecting two adjacent winding cores through a vapor chamber, the temperature of the vapor chamber can be made to substantially correspond to the average temperature of the two adjacent winding cores through heat conduction. Since the portion of the temperature sensor 30 passing through the connection hole 450 is connected to the vapor chamber, the temperature sensor 30 can directly obtain the temperature of the vapor chamber, thereby reflecting the average temperature of the two adjacent winding cores, and realizing the acquisition of temperature parameters.

[0078] In some embodiments, a heat spreader may be provided on the side of the two winding cores facing each other, and the temperature sensor 30 may be extended between the two heat spreaders. By obtaining the temperature between the two heat spreaders, the average temperature of the two adjacent winding cores can be reflected, thereby obtaining the temperature parameters.

[0079] In some embodiments, the second mounting hole 120 is spaced apart from the first mounting hole 110 so that the air pressure parameter and the temperature parameter can be obtained at two different positions of the housing 10 .

[0080] In some embodiments, the fourth sealing cover 440 is snap-fitted to the second mounting hole 120 , and is also bonded to the second mounting hole 120 , so that the fourth sealing cover 440 and the housing 10 form a good seal.

[0081] The temperature sensor 30 may be in a thinner shape such as a sheet or a film. For example, the temperature sensor 30 may be a thermistor, a thermistor probe, etc. The connection hole 450 on the fourth sealing cover 440 is adapted to the size of the temperature sensor 30. Since 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 may be sealed by an adhesive in a subsequent glue injection process to ensure the sealing of the connection between the temperature sensor 30 and the fourth sealing cover 440.

[0082] In some embodiments, the portion of the temperature sensor 30 that passes through the connection hole 450 has multiple temperature collection points and is integrated with a pressure sensing unit.

[0083] It is understandable that multiple temperature collection points can realize multi-point temperature measurement to improve the accuracy of temperature measurement. A pressure sensing unit is integrated in the exit section of the temperature sensor 30, so that the temperature sensor 30 can also perform pressure measurement, enriching the function of the temperature sensor 30.

[0084] Wherein, each temperature collection point is provided with a temperature collection unit to obtain the temperature parameters of the point. A plurality of temperature collection points can be arranged at equal intervals along the length direction of the temperature sensor 30. Alternatively, a plurality of temperature collection points are randomly distributed on the temperature sensor 30.

[0085] In some embodiments, a plurality of second mounting holes 120 may be constructed on the housing 10, each second mounting hole 120 is connected to a fourth sealing cover 440, and a temperature sensor 30 is correspondingly provided. Thus, the external temperature parameters are measured by a plurality of temperature sensors 30 to improve the accuracy of the temperature measurement. It can be immediately understood that the plurality of temperature sensors 30 can measure the temperature at different depths and different positions inside the battery cell, thereby accurately reflecting the temperature parameters inside the battery cell.

[0086] In some embodiments, multiple information collection devices may be provided in the battery cell to measure the temperature at different depths and positions inside the battery cell, thereby accurately reflecting the temperature parameters inside the battery cell.

[0087] See also Figure 2 In some embodiments, the housing 10 is provided with injection holes 130 and exhaust holes 140 at intervals. The injection holes 130 are configured to inject adhesive into the housing 10, and the exhaust holes 140 are configured to exhaust air in the housing 10 when injecting adhesive. The injection holes 130 are suitable for being sealed by the first sealing portion 150, and the exhaust holes 140 are suitable for being sealed by the second sealing portion 160.

[0088] It is understandable that injecting adhesive into the housing 10 through the glue injection hole 130 can, on the one hand, enable components inside the housing 10 to be reliably connected, and on the other hand, can seal the housing 10 through the adhesive and provide insulation protection through the colloid.

[0089] Since the adhesive will be continuously filled inside the housing 10 during the glue injection process, in order to ensure the balance of the air pressure inside the housing 10 and to ensure that the adhesive can be successfully filled into the housing 10, an exhaust hole 140 is provided on the housing 10, thereby balancing the air pressure inside the housing 10 during the glue injection process. After the glue injection is completed, a first sealing portion 150 is inserted at the glue injection hole 130 to close the glue injection hole 130. A second sealing portion 160 is inserted at the exhaust hole 140 to close the exhaust hole 140.

[0090] The first sealing part 150 and the second sealing part 160 can both be arranged in a columnar shape. The first sealing part 150 is clamped to the glue injection hole 130, and is bonded to the glue injection hole 130130 under the action of the adhesive. The second sealing part 160 is clamped to the exhaust hole 140, and is bonded to the exhaust hole 140 under the action of the adhesive.

[0091] Please continue reading Figure 2In some embodiments, the information collection device further includes a circuit board 50. The circuit board 50 is disposed in the housing 10, and the air pressure sensor 20 and the temperature sensor 30 are mounted on the circuit board 50. The circuit board 50 is provided with a signal sending unit for wirelessly sending parameter information to the terminal. The circuit board 50 is provided, and the air pressure sensor 20 and the temperature sensor 30 are electrically connected to the circuit board 50 to achieve the installation of the sensor. Among them, after the air pressure sensor 20 and the temperature sensor 30 respectively collect the working parameters inside the battery cell such as air pressure parameters and temperature parameters, the signal sending unit of the circuit board 50 can send the parameter signal to the terminal for real-time recording, real-time display, etc.

[0092] The signal transmitting unit may be a Bluetooth antenna. The terminal may be a mobile terminal such as a mobile phone, iPad, or a vehicle-mounted display screen, or may be a fixed terminal such as a computer or a monitoring room. It is understood that a signal receiving unit adapted to the signal transmitting unit is provided on the terminal, such as a signal receiver, to realize signal reception at the terminal. A signal processing unit, such as a processor, is also provided on the terminal to realize processing, storage, and display of the processed signal.

[0093] like Figure 2 As shown, in some embodiments, a mounting bracket 60 is provided on the circuit board 50, and the mounting bracket 60 is used to connect the battery 70. Based on connecting the battery 70 through the mounting bracket 60, the information collection device does not consume the power of the battery cell.

[0094] Compared with the traditional external information collection device that draws power from the battery cell, the traditional information collection device consumes the power of the battery cell. Due to the power consumption of the information collection device itself and its reliability and other issues, while increasing the power consumption, it may also affect the reliability of the battery cell, causing the battery cell to have problems such as battery body failure and high self-discharge. However, the information collection device in this embodiment is directly powered by the internal battery 70 and does not draw power from the battery cell. Therefore, the information collection device does not consume the power of the battery cell, and the two are not electrically connected. Therefore, the above problems will not occur.

[0095] It can be understood that, since the battery 70 is arranged inside the housing 10 for independent power supply, the risk of the entire battery cell being incurred due to failure of the acquisition circuit is avoided, thereby ensuring the reliability of the battery cell.

[0096] In some embodiments, the battery 70 can be a lithium primary battery 70 with high reliability and long life. It has the characteristics of miniaturization and long life. For example, a metal lithium primary battery 70 such as a lithium-manganese dioxide battery 70 and a lithium thionyl chloride battery 70. The number of batteries 70 can be set to one, two or more. When the battery 70 is set to multiple, multiple batteries 70 can be connected in parallel to the mounting bracket 60, or multiple batteries 70 can be connected in series to the mounting bracket 60. For example, the number of batteries 70 is set to two, and two batteries 70 are connected in parallel to the mounting bracket 60.

[0097] In some embodiments, the battery 70 may also be a soft pack battery 70, a stainless steel case battery 70, etc. The battery 70 is connected to the circuit board 50 through a lead-out welding piece, a tab, etc. to realize power supply.

[0098] like Figure 2 As shown, in some embodiments, the mounting bracket 60 includes a first connecting piece 610 and a second connecting piece 620 arranged opposite to each other. The first connecting piece 610 is configured with a third connecting piece 630 bent toward the second connecting piece 620, and the third connecting piece 630 is electrically connected to the circuit board 50. The second connecting piece 620 has a fourth connecting piece 640 extending toward the circuit board 50, and the fourth connecting piece 640 is electrically connected to the circuit board 50. The battery 70 is sandwiched between the first connecting piece 610 and the second connecting piece 620.

[0099] The first connecting piece 610 and the second connecting piece 620 are arranged at intervals, and the battery 70 is clamped between the first connecting piece 610 and the second connecting piece 620. The first connecting piece 610 is electrically connected to the circuit board 50 through the third connecting piece 630, and the second connecting piece 620 is electrically connected to the circuit board 50 through the fourth connecting piece 640. Thus, the battery 70 can supply power to the circuit board 50 through the first connecting piece 610, the second connecting piece 620, the third connecting piece 630 and the fourth connecting piece 640, so that the sensor and other components located on the circuit board 50 can work normally.

[0100] The spacing between the first connecting piece 610 and the second connecting piece 620 can be reasonably selected based on the thickness of the battery 70. The spacing between the first connecting piece 610 and the second connecting piece 620 is slightly smaller than the thickness of the battery 70 to ensure that the first connecting piece 610 and the second connecting piece 620 can stably clamp and fix the battery 70.

[0101] The lengths of the first connecting piece 610 and the second connecting piece 620 can be reasonably selected based on the number of batteries 70. For example, when there are two batteries 70 and they are arranged in parallel, the lengths of the first connecting piece 610 and the second connecting piece 620 are both greater than the total length of the diameters of the two batteries 70.

[0102] 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 sheets. 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 sheets. The first connecting sheet 610 and the third connecting sheet 630 are integrally formed, and the second connecting sheet 620 and the fourth connecting sheet 640 are integrally formed.

[0103] On the other hand, an embodiment of the utility model further provides a battery pack, which includes the information collection device in the above embodiment.

[0104] In this embodiment, the air pressure sensor 20 is installed in the housing 10, and at least a portion of the air pressure sensor 20 is snapped into the first mounting hole 110, so as to obtain the air pressure parameters outside the housing 10 and realize information collection. The first mounting hole 110 is sealed based on the seal to ensure that the housing 10 has good sealing properties, so that the information collection device is built into the battery cell. Since the seal can pass through gas and block liquid, the air pressure sensor 20 can obtain the air pressure parameters outside the housing 10 through the seal, so as to realize the collection of air pressure parameters. In this way, the information collection device can collect information in the environment of electrolyte, thereby improving the technical problem of complex structure and insufficient reliability of the battery cover plate caused by the external placement of the information collection device.

[0105] The information collection device is disposed between the upper plate and the winding core in the battery cell, and is located near the positive and negative poles or non-metallic seals. Since the internal environment of the battery cell is full of electrolyte, after sealing based on the seal, it can prevent the electrolyte from penetrating into the housing 10 and causing damage to the information collection device.

[0106] The information collection device may also be arranged in other areas inside the battery cell. For example, the information collection device is arranged in an area inside the battery cell close to the bottom plate of the housing. For example, the information collection device is arranged in an area inside the battery cell close to the cover plate of the housing. For example, the information collection device is arranged in an area inside the battery cell close to the end plate of the housing. For example, the information collection device is arranged in an area inside the battery cell close to the side plate of the housing.

[0107] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. An information collection device, characterized in that: include: A housing having a first mounting hole; An air pressure sensor is installed in the housing, and at least a portion of the air pressure sensor is snapped into the first mounting hole to obtain air pressure parameters outside the housing; A sealing member is used to seal the first mounting hole, wherein the sealing member is used to allow gas to pass through and block liquid.

2. The information collection device according to claim 1, characterized in that: The air pressure sensor comprises: Pedestal; A side wall is arranged around the circumference of the base, the side wall and the base are combined to form a mounting cavity, and a side of the side wall away from the base is penetrated into the first mounting hole; A pneumatic chip is installed on the base, the base is suitable for being installed on a circuit board, the pneumatic chip is electrically connected to the circuit board, and the installation cavity is filled with a gel layer and a sealing layer in sequence in a direction away from the base.

3. The information collection device according to claim 2, characterized in that: A sealing plate for closing its own passage is constructed in the first mounting hole, and a first air vent is constructed on the sealing plate, wherein the side wall is clamped in the first mounting hole, and a side of the side wall away from the base abuts against the sealing plate.

4. The information collection device according to claim 3, characterized in that: The sealing plate has an abutment portion extending in the direction of the air pressure sensor, the abutment portion is spaced apart from the hole wall of the first mounting hole, and forms a slot, the side of the side wall away from the base is constructed with a stepped surface, the side wall is snapped into the slot, and the stepped surface is butted against the abutment portion.

5. The information collection device according to claim 3, characterized in that: The sealing member includes a first breathable membrane, which is connected to the outer surface of the shell and seals the first breathable hole.

6. The information collection device according to claim 1, characterized in that: The sealing member includes a second breathable membrane and a second sealing cover, wherein the second sealing cover is configured with a second breathable hole, wherein the second sealing cover is clamped in the first mounting hole, and the second breathable membrane is connected to the second sealing cover and seals the second breathable hole.

7. The information collection device according to claim 6, characterized in that: The outer surface of the housing is configured with a sealing groove, the first mounting hole is formed at the bottom surface of the sealing groove, wherein the bottom surface of the sealing groove is further configured with a connecting portion, the connecting portion is spaced apart from the first mounting hole, the connecting portion is configured with a center hole and a notch connected to the center hole, and the notch faces the first mounting hole; Wherein, the second sealing cover is clamped in the sealing groove, and the second air hole corresponds to the position of the central hole.

8. The information collection device according to any one of claims 1 to 7, characterized in that: The information collection device also includes: A temperature sensor, wherein the shell is provided with a second mounting hole, a fourth sealing cover is connected to the second mounting hole, a connecting hole is provided on the fourth sealing cover, one end of the temperature sensor is located in the shell, and the other end of the temperature sensor passes through the shell from the connecting hole to obtain temperature parameters outside the shell.

9. The information collection device according to claim 8, characterized in that: The portion of the temperature sensor passing through the connection hole is configured to be connected to a vapor chamber, and the vapor chamber is connected between two adjacent winding cores.

10. The information collection device according to claim 8, characterized in that: The portion of the temperature sensor passing through the connecting hole has a plurality of temperature collection points and is integrated with a pressure sensing unit.

11. The information collection device according to any one of claims 1 to 7, characterized in that: The shell is provided with injection holes and exhaust holes at intervals, the injection holes are configured to inject adhesive into the shell, and the exhaust holes are configured to exhaust air in the shell when the adhesive is injected, wherein the injection holes are suitable for being sealed by a first sealing portion, and the exhaust holes are suitable for being sealed by a second sealing portion.

12. A battery pack, characterized in that: It comprises the information collection device as claimed in any one of claims 1 to 11.

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