Circuit-embedded analyte detection device

Abstract

The application discloses an analyte detection device with embedded circuit, which is characterized in that an electronic circuit is arranged in an upper shell or a lower shell, and the electronic circuit comprises at least one electronic component, and the electronic component at least comprises a transmitter antenna and the like, so as to form an analyte detection device with high integration and embedded electronic circuit and shell, and the space occupied by the electronic circuit is less, and the miniaturization design requirement of the analyte detection device is met.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit of and priority of the following patent applications: PCT patent application filed on September 27, 2021, application number PCT / CN2021 / 120856; and PCT patent application filed on December 8, 2021, application number PCT / CN2021 / 136529. Technical Field

[0003] This invention relates primarily to the field of medical devices, and in particular to a circuit-embedded analytical device for detecting substances. Background Technology

[0004] In a healthy person, the pancreas automatically monitors blood glucose levels and secretes the necessary insulin / glucagon. However, in diabetic patients, the pancreas malfunctions and cannot secrete insulin as needed. Therefore, diabetes is a metabolic disease caused by abnormal pancreatic function and is a lifelong condition. Currently, medical technology cannot cure diabetes; it can only control the occurrence and development of diabetes and its complications by stabilizing blood sugar levels.

[0005] Diabetic patients need to have their blood sugar checked before injecting insulin. Most current testing methods can continuously monitor blood sugar and send the data in real time to a remote device for user viewing; this method is called Continuous Glucose Monitoring (CGM). This method requires a testing device to be attached to the skin surface, with its probe inserted into the subcutaneous tissue fluid to complete the test.

[0006] Existing analyte detection devices typically include at least one independent circuit board to house electronic components such as transmitters, sensor contacts, and battery contacts. The circuit board also includes a substrate, which occupies a significant amount of internal space and increases the difficulty of further miniaturizing the analyte detection device.

[0007] Therefore, there is an urgent need for a highly integrated analyte detection device with a smaller circuit footprint. Summary of the Invention

[0008] This invention discloses a circuit-embedded analyte detection device. An electronic circuit is disposed inside the upper housing or the lower housing. The electronic circuit includes at least one electronic component, which includes at least a transmitter antenna, to form a highly integrated analyte detection device in which the electronic circuit is embedded with the housing. The electronic circuit occupies less space, meeting the miniaturization design requirements of analyte detection devices.

[0009] This invention discloses a circuit-embedded analyte detection device, comprising: a housing, the housing including an upper housing and a lower housing, the upper housing having a through hole; an electronic circuit disposed inside the upper housing or the lower housing, the electronic circuit including at least one electronic component; the electronic component including at least a transmitter antenna for communicating with external devices; a sensor for acquiring analyte parameter information in the user's body; and a battery for providing power to the electronic circuit.

[0010] According to one aspect of the invention, the electronic circuit further includes a substrate embedded inside the upper housing or the lower housing, and electronic components and wires are fixed on the substrate.

[0011] According to one aspect of the invention, the electronic circuit is integrally formed with the upper housing, and the electronic components and wires are fixed inside the upper housing or the lower housing.

[0012] According to one aspect of the present invention, the battery includes a housing, a cell, and an electrolyte, wherein the cell includes a separator, a positive electrode, a negative electrode, and a conductive sheet.

[0013] According to one aspect of the invention, the cavity shell includes an upper cover and a lower shell, wherein the lower shell is integrally formed with the lower outer shell and / or the upper cover is integrally formed with the upper outer shell.

[0014] According to one aspect of the present invention, an electrolyte insulating layer is provided inside the cavity shell.

[0015] According to one aspect of the invention, the electrolyte barrier layer is made of TPE or PET material.

[0016] According to one aspect of the invention, the electrolyte insulating layer is a thin film coated on the inner wall of the cavity shell.

[0017] According to one aspect of the present invention, the thickness of the electrolyte barrier film is 300-500 μm.

[0018] According to one aspect of the invention, the electrolyte isolation layer is a closed shell independent of the cavity shell.

[0019] According to one aspect of the invention, the electronic component further includes a power electrode, one end A of the conductive sheet is fixedly connected to a positive electrode or a negative electrode, and the other end B of the conductive sheet is electrically connected to the power electrode.

[0020] According to one aspect of the invention, the end B of the conductive sheet is fixedly connected to the power electrode by solder or solder paste.

[0021] According to one aspect of the invention, an insulating sealant is applied to the connection between the upper cover and the lower housing.

[0022] According to one aspect of the invention, the insulating sealant is either a hot melt adhesive or silicone.

[0023] According to one aspect of the invention, the sensor includes an inner portion and an outer portion, the outer portion being bent relative to the inner portion, the outer portion being laid flat on the inner surface of the upper housing, and the inner portion extending through a through-hole to the outer side of the upper housing.

[0024] According to one aspect of the invention, the electronic component further includes sensor electrical contacts, with the external portion electrically connected to the sensor electrical contacts.

[0025] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0026] In the circuit-embedded analytical substance detection device disclosed in this invention, an electronic circuit is disposed inside the upper or lower housing. The electronic circuit includes at least one electronic component, and the electronic component includes at least a transmitter antenna, so as to form a highly integrated analytical substance detection device in which the electronic circuit is embedded with the housing. The electronic circuit occupies less space and meets the miniaturization design requirements of analytical substance detection devices.

[0027] Furthermore, the electronic circuit also includes a substrate embedded inside the upper or lower housing for fixing electronic components and wires. The embedded substrate can save space occupied by the substrate and facilitate the miniaturization design of the analyte detection device.

[0028] Furthermore, the electronic circuit is integrally formed with the upper or lower housing, and the electronic components and wires are directly fixed inside the upper or lower housing, eliminating the need for an electronic circuit board, reducing the space occupied by the electronic circuit, and facilitating the miniaturization design of analyte detection devices.

[0029] Furthermore, a battery cavity is provided inside the casing. The battery cavity includes a cavity shell, a separator, an electrolyte, a positive electrode plate, a negative electrode plate, and a conductive plate. An electrolyte isolation layer is also provided inside the cavity shell, forming an integrated structure of battery and casing. The shape and size of the analyte detection device are no longer limited by the shape and size of the button battery shell. The shape and size of the battery cavity can be optimized according to the miniaturization design requirements of the analyte detection device to improve the user experience.

[0030] Furthermore, the integrated design of the battery and casing can make full use of the useful space of the detection device. With the overall size of the analyte detection device reduced, more active material can be filled into the battery cavity, thereby increasing the battery capacity compared to a button cell battery and extending the battery life of the analyte detection device.

[0031] Furthermore, the upper cover and the upper outer shell are integrally formed and / or the lower shell and the lower outer shell are integrally formed. The connection between the lower shell and the upper cover is coated with insulating sealant, forming a good sealing environment inside the cavity, which can prevent electrolyte leakage and outside air from entering the cavity.

[0032] Furthermore, the electrolyte insulation layer is made of TPE or PET material, which can effectively prevent the electrolyte from corroding the cavity shell.

[0033] Furthermore, the external part of the sensor is bent relative to the internal part, and the external part is laid flat inside the upper shell, while the internal part passes through the upper shell to the outside. This reduces the height of the sensor, thereby reducing the thickness of the shell, which is beneficial for the miniaturization design of analyte detection devices. Attached Figure Description

[0034] Figure 1a This is an exploded structural diagram of the analyte detection device according to the first embodiment of the present invention;

[0035] Figure 1b This is an exploded view of the analyte detection device according to the first embodiment of the present invention from another direction;

[0036] Figure 2 This is a schematic diagram of the X-X' cross-sectional structure of the battery cavity according to the first embodiment of the present invention;

[0037] Figure 3 This is a comparison diagram of the electrochemical impedance spectroscopy of the positive electrode sheet according to an embodiment of the present invention;

[0038] Figures 4a-4c This is a schematic diagram of the shape of a circuit board according to a first embodiment of the present invention;

[0039] Figure 5a This is an exploded structural diagram of the analyte detection device according to a second embodiment of the present invention;

[0040] Figure 5b This is an exploded view of the analyte detection device from another direction according to the second embodiment of the present invention;

[0041] Figure 5c This is a schematic diagram of the structure of the electrode plates located inside the battery cavity according to the second embodiment of the present invention;

[0042] Figure 6 This is a schematic diagram of the Y-Y' cross-sectional structure of the battery cavity according to the second embodiment of the present invention;

[0043] Figure 7a This is an exploded view of the analyte detection device according to a third embodiment of the present invention;

[0044] Figure 7b This is an exploded view of the analyte detection device from another direction according to the third embodiment of the present invention;

[0045] Figure 8 This is a schematic diagram of the Z-Z' cross-sectional structure of the battery cavity according to the third embodiment of the present invention. Detailed Implementation

[0046] As mentioned earlier, existing analytical material detection devices have at least one independent circuit board to carry electronic components and wires, including transmitters, sensor contacts, and battery contacts. The circuit board also includes a substrate, which occupies a large amount of internal space and increases the difficulty of further miniaturization design of the device.

[0047] To address this problem, the present invention provides a circuit-embedded analyte detection device, wherein an electronic circuit is disposed inside the upper housing or the lower housing. The electronic circuit includes at least one electronic component, which includes at least a transmitter antenna, to form a highly integrated analyte detection device in which the electronic circuit is embedded with the housing. The electronic circuit occupies less space, thus meeting the miniaturization design requirements of analyte detection devices.

[0048] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments should not be construed as limiting the scope of the invention.

[0049] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not necessarily drawn to actual scale; for example, the thickness, width, length, or distance of some units may be enlarged relative to other structures.

[0050] The following description of exemplary embodiments is merely illustrative and is not intended to limit the invention or its application or use in any way. Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail herein, but where applicable, such techniques, methods, and apparatus should be considered part of this specification.

[0051] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined or described in a figure, it will not need to be discussed further in the subsequent description of the figures.

[0052] First Embodiment

[0053] Figure 1a This is an exploded view of the analyte detection device according to the first embodiment of the present invention; Figure 1b This is an exploded view of the analyte detection device according to the first embodiment of the present invention from another direction; Figure 2 This is a schematic diagram of the X-X' cross-sectional structure of the battery cavity in the first embodiment of the present invention.

[0054] Reference Figure 1a , Figure 1b and Figure 2The detection device includes a housing 10, a circuit board 13, a battery cavity 14, and a sensor 15. The housing 10 includes an upper housing 11 and a lower housing 12. The circuit board 13 and the battery cavity 14 are disposed on the lower housing 12, and the sensor 15 is disposed on the upper housing 11.

[0055] In this embodiment of the invention, the housing 10 of the detection device is made of one of the following materials: PE, PP, HDPE, PVC, ABS, PMMA, PC, PPS or PU. The above materials have low density, which can reduce the weight of the detection device and improve the user experience.

[0056] In this embodiment of the invention, the cavity shell 141 of the battery cavity 14 includes an upper cover 1411 and a lower shell 1412. The bottom of the lower shell 1412 is part of the lower outer shell 12, and the sidewall of the lower shell 1412 protrudes from the lower outer shell 12 and faces the upper outer shell 11, forming a structure in which the lower shell 1412 and the lower outer shell 12 are integrally formed.

[0057] In a preferred embodiment of the present invention, the lower housing 1412 and the lower outer housing 12 are made of the same material, which facilitates integral injection molding during processing.

[0058] In this embodiment of the invention, the upper cover 1411 is part of the upper outer shell 11, forming a structure in which the upper cover 1411 and the upper outer shell 11 are integrally formed.

[0059] In a preferred embodiment of the present invention, the upper cover 1411 and the upper outer shell 11 are made of the same material, which facilitates integral injection molding during processing.

[0060] In this embodiment of the invention, the lower housing 1412 and the lower outer housing 12, and the upper cover 1411 and the upper outer housing 11 can be integrally injection molded simultaneously, or they can be integrally injection molded separately. When integrally injection molded separately, for example, when the lower housing 1412 and the lower outer housing 12 are integrally injection molded, the upper cover 1411 is a cover independent of the upper outer housing 11; as another example, when the upper cover 1411 and the upper outer housing 11 are integrally injection molded, the lower housing 1412 is a cavity shell independent of the lower outer housing 12.

[0061] In a preferred embodiment of the present invention, the lower housing 1412 and the lower outer housing 12, and the upper cover 1411 and the upper outer housing 11 are integrally injection molded, which is more suitable for the miniaturized design of analyte detection devices.

[0062] In this embodiment of the invention, since the upper cover 1411 and lower shell 1412 made of plastic materials, such as PE (polyethylene), PP (polypropylene), and PC (polycarbonate), are easily corroded by the electrolyte, an electrolyte isolation layer 147 is also required to be provided on the inner side of the upper cover 1411 and the lower shell 1412.

[0063] In this embodiment of the invention, the electrolyte barrier layer 147 is TPE (butyl rubber) or PET (polyethylene terephthalate). TPE is a thermoplastic elastomer material with strong processability, while PET itself serves as a container for the electrolyte and can effectively isolate the electrolyte from corrosion of the cavity shell and circuit devices.

[0064] In this embodiment of the invention, the electrolyte barrier layer 147 can be a thin film coated on the inner side of the upper cover 1411 and the lower shell 1412 by deposition or solution method, or it can be a separate closed shell.

[0065] In a preferred embodiment of the present invention, the electrolyte barrier layer 147 is a thin film with a thickness of 300-500 μm. If the thickness of the electrolyte barrier layer 147 is too small, the film material will be wetted and softened by the electrolyte, which will lead to aging of the film material over time. If the thickness is too large, it will occupy the internal space of the chamber. In a more preferred embodiment of the present invention, the thickness of the electrolyte barrier layer 147 is 400 μm.

[0066] In this embodiment of the invention, the battery cavity 14 is further provided with a separator 142, an electrolyte 143, a positive electrode 144, a negative electrode 145, and a conductive sheet 146. The positive electrode 144 and the negative electrode 145 are immersed in the electrolyte 143 and are separated by the separator 142.

[0067] In this embodiment of the invention, the separator 142, the positive electrode 144, and the negative electrode 145 are wound structures, with the separator 142 located between the positive electrode 144 and the negative electrode 145. (Reference) Figure 2 In the cross-sectional view of the battery cavity, the two ends of the separator 142 abut against the electrolyte barrier layer 147 to completely isolate the negative electrode 145 and the positive electrode 144.

[0068] In other embodiments of the present invention, the diaphragm 142, the positive electrode 144, and the negative electrode 145 may also be a stacked structure.

[0069] In this embodiment of the invention, the solute of electrolyte 143 is a lithium salt, such as lithium perchlorate (LiClO4), lithium hexafluorophosphate (LiPF6), or lithium tetrafluoroborate (LiBF4). The solvent is one of ethylene carbonate, propylene carbonate, diethyl carbonate, dimethyl carbonate, methyl ethyl carbonate, phosphorus pentafluoride, hydrofluoric acid, diethyl ether, ethylene carbonate, propylene carbonate, or diethyl carbonate. In a preferred embodiment of the invention, the solvent is an organic solvent, such as diethyl ether, ethylene carbonate, propylene carbonate, or diethyl carbonate.

[0070] In this embodiment of the invention, the main material of the positive electrode 144 is manganese dioxide, and it is prepared by the following process:

[0071] ① The electrolytic manganese dioxide, conductive agent, and binder are sieved using a sieve or air classifier. Electrolytic manganese dioxide particles smaller than 200 μm are selected, placed in a quartz boat, and heat-treated in a sintering furnace at 200°C for 4 hours. The purpose of this step is to cause the electrolytic manganese dioxide to lose some of its bound water, resulting in a shift in X-ray diffraction peaks, a decrease in interplanar spacing, and an increase in Mn-O bonding strength, thereby enhancing the discharge capacity of the electrolytic manganese dioxide.

[0072] ② After cooling the electrolytic manganese dioxide from step ① to below 60℃, weigh out 9g of electrolytic manganese dioxide, 0.5g of conductive agent with a particle size less than 200µm, and 0.5g of binder with a particle size less than 200µm using an electronic balance. Place them in a grinding dish, mix thoroughly, and then grind manually or electrically to obtain 10g of the grinding mixture. Ensure that the grinding mixture can pass through a 300-mesh (48µm particle size) sieve. The purpose of this step is to ensure the uniformity of the mixture and avoid uneven dispersion of the conductive agent and additives.

[0073] In other embodiments of the present invention, the mass ratio of electrolytic manganese dioxide, conductive agent and binder is not limited to the above-mentioned proportions, and their mass ratios can be 80%-96%, 2%-10% and 2%-10% respectively.

[0074] In a preferred embodiment of the present invention, the conductive agent may be one or more of conductive carbon black, graphite, super p, or carbon nanotubes.

[0075] In a preferred embodiment of the present invention, the adhesive may be one or more of PVDF (polyvinylidene fluoride), polytetrafluoroethylene, and sodium polyacrylate.

[0076] ③ Place the ground mixture in a vacuum oven and heat it to 65°C for 5 hours to dry any moisture that may be present in the mixture, ensuring that the sample is dry and obtaining the positive electrode mixture.

[0077] ④ Add 10g of NMP (N-methylpyrrolidone) solvent to a dry glass bottle, then slowly add the positive electrode mixture to the glass bottle and stir with a magnetic stirrer for 3 hours to ensure uniform mixing, resulting in a positive electrode slurry with a solid content of 50%. The purpose of this step is to ensure uniform dispersion of the components in the positive electrode slurry. The solid content is related to the viscosity of the positive electrode slurry; a 50% solid content positive electrode slurry has better viscosity, resulting in better film formation after coating onto the substrate and reducing powder shedding or cracking.

[0078] ⑤ Use a flatbed coating machine to coat the positive electrode slurry onto the substrate surface to obtain a conductive layer. Then place the conductive layer and the substrate in a vacuum oven to bake at 110°C for 12 hours to ensure that the moisture is completely dried.

[0079] In a preferred embodiment of the present invention, the substrate material is either aluminum foil or nickel foam mesh, with a thickness of 12-18 μm.

[0080] In a more preferred embodiment of the present invention, the substrate material is aluminum foil with a thickness of 15 μm.

[0081] ⑥ Using an electric vertical roller press to roll the conductive layer and substrate can reduce the overall thickness of the conductive layer and substrate to 180-220µm, resulting in the finished positive electrode sheet. By adjusting the operating parameters of the coating machine and the roller press, the thickness of the positive electrode sheet can be controlled, ensuring that the electrode sheet has a relatively complete conductive network while maintaining a high compaction density, thus meeting the working requirements of high-current pulse discharge.

[0082] Figure 3 This is a comparison of the electrochemical impedance spectroscopy (EIS) spectra of the positive electrode sheets. The solid line represents the EIS curve of the positive electrode sheet α obtained by the process steps of the present invention (coating method combining dry and wet mixing), and the dashed line represents the EIS curve of the positive electrode sheet β obtained by the prior art process steps (pressing and coating method). It can be seen from the figure that in R... sei In the first stage, the curvature of the solid line is less than that of the dashed line, indicating that the polarization degree of the positive electrode α is less than that of the positive electrode β. Therefore, during high-current pulse discharge, the resistance of the positive electrode α is less than that of the positive electrode β, thus improving the battery's discharge capability. Secondly, in R... ct In this stage, the curvature of the solid line is still less than that of the dashed line, indicating that the resistance of the positive electrode α is less than that of the positive electrode β. This is because, under the same conditions in the battery, the porosity of the positive electrode α is greater than that of the positive electrode β. The positive electrode α can accommodate more and higher concentrations of electrolyte, further improving the battery's discharge capability under high current pulses, in order to meet the pulse power supply requirements of analyte detection devices.

[0083] In this embodiment of the invention, the negative electrode 145 is mainly a lithium-based material.

[0084] In other embodiments of the present invention, the positive electrode 144 may also be a lithium-containing compound such as lithium manganese oxide, lithium cobalt oxide, or lithium iron phosphate, and the corresponding negative electrode 145 may be graphite.

[0085] In this embodiment of the invention, the diaphragm 142 is made of PE (polyethylene) or PP (polypropylene), and can be a single layer of PE or PP, or a three-layer PE or PP.

[0086] In this embodiment of the invention, one end A of the conductive sheet 146 is fixedly connected to the positive electrode 144 or the negative electrode 145, and the other end B of the conductive sheet 146 passes through the electrolyte barrier layer 147 and the lower housing 1412, and is electrically connected to the circuit board 13. A groove or through hole 1461 is provided on the lower housing 1412 for the conductive sheet 146 to pass through. In a preferred embodiment of the invention, end A is fixedly connected to the positive electrode 144 or the negative electrode 145 by solder or solder paste.

[0087] In this embodiment of the invention, the conductive sheet 146 connected to the positive electrode 144 is made of aluminum, and the conductive sheet 146 connected to the negative electrode 145 is made of nickel or nickel-plated copper.

[0088] In this embodiment of the invention, insulating sealant is applied to the connection between the upper cover 1411 and the lower housing 1412, and the connection between the conductive sheet 146 and the lower housing 1412. This serves two purposes: firstly, to fix the upper cover 1411 and the lower housing 1412, and the conductive sheet 146 and the lower housing 1412; and secondly, to prevent the electrolyte 143 from leaking into the outside world and causing unnecessary pollution.

[0089] In a preferred embodiment of the present invention, the insulating sealant is a hot melt adhesive or silicone, both of which have high thermoplasticity and adhesion. The hot melt adhesive also helps in the self-thermal runaway management of the battery.

[0090] Specifically, in a preferred embodiment of the present invention, when the lower housing 1412 and the lower outer housing 12, and the upper cover 1411 and the upper outer housing 11 are simultaneously integrally injection molded, the processing flow of the battery cavity 14 is as follows:

[0091] ① Coat the inside of the upper cover 1411 and the lower shell 1412 with PET or TPE material with a thickness of 300-500um, place them in a constant temperature oven and set the temperature to 60-85℃ until the coating material is completely dry.

[0092] ② Place the battery cell (including diaphragm 142, positive electrode 144, negative electrode 145, and conductive sheet 146) inside the lower housing 1412. One end of the conductive sheet 146 is fixed to the lower housing 1412 with insulating sealant, while the other end of the conductive sheet 146 is fixedly connected to the positive and negative electrodes with solder or solder paste.

[0093] ③ The lower housing 1412 is placed statically. Electrolyte 143 is injected into the lower housing 1412 using a pipette, and the whole unit is moved to the transition chamber for vacuum static placement to ensure that the electrolyte completely wets the positive and negative electrode plates, thereby improving the electrochemical performance of the battery cavity.

[0094] ④ After the lower housing 1412 has been left to stand, apply insulating sealant to the connection between it and the upper cover 1411, and then close the upper cover 1411 to maintain the seal and obtain a complete battery cavity.

[0095] Continue to refer to Figure 1a and Figure 1b In this embodiment of the invention, the sensor 15 includes an external portion 151 and an internal portion 152. The external portion 151 lies flat inside the upper outer casing 11, which reduces the height of the sensor and thus reduces the thickness of the analyte detection device. The internal portion 152 is bent relative to the external portion 151 and passes through a through-hole 111 on the upper outer casing to the outside. In a preferred embodiment of the invention, the internal portion 152 is bent at a 90° angle relative to the external portion 151.

[0096] In this embodiment of the invention, the internal portion 152 is inserted subcutaneously into the user to obtain analyte parameter information, while the external portion 151 is electrically connected to the circuit board 13 to transmit the analyte parameter information to an external device via a transmitter antenna 131 on the circuit board. In this embodiment of the invention, the transmitter antenna 131 communicates wirelessly with the external device.

[0097] Figures 4a-4c This is a schematic diagram of the circuit board shape.

[0098] In this embodiment of the invention, the shape of the circuit board 13 is adapted to the shapes of the lower outer shell 12 and the lower shell 1412. Here, "adapted" means that, given that the lower shell 1412 already occupies a predetermined space, the shape of the circuit board 13 is designed to fill the remaining usable space inside the lower outer shell 12. For example, if the lower outer shell 12 is circular and the lower shell 1412 is an eccentric circle, the circuit board 13 can be designed as a crescent shape; if the lower outer shell 12 is circular and the lower shell 1412 is a concentric circle, the circuit board 13 can be designed as an annular shape; if the lower outer shell 12 is square and the lower shell 1412 is an eccentric square, the circuit board 13 can be designed as a figure-7. Besides the possible shapes of the circuit board 13 described above, it can also be designed in other shapes, as long as it can fill the internal space of the lower outer shell 12.

[0099] In this embodiment of the invention, an adhesive patch (not shown in the figure) is also provided on the outer side of the upper outer shell 11. The adhesive patch is used to fix the analyte detection device to the user's skin surface.

[0100] Second Embodiment

[0101] Figure 5a This is an exploded view of the analyte detection device according to the second embodiment of the present invention; Figure 5b This is an exploded view of the analyte detection device according to the second embodiment of the present invention from another direction; Figure 5c This is a schematic diagram of the structure of the electrode plate located inside the battery cavity in the second embodiment of the present invention; Figure 6 This is a schematic diagram of the Y-Y' cross-sectional structure of the battery cavity according to the second embodiment of the present invention.

[0102] Reference Figure 5a , Figure 5b , Figure 5c and Figure 6 The detection device includes a housing 20, a circuit board 23, a battery cavity 24, and a sensor 25. The housing 20 includes an upper housing 21 and a lower housing 22. The battery cavity 24 is disposed on the lower housing 22, and the sensor 25 is disposed on the upper housing 21.

[0103] In this embodiment of the invention, the housing 20 of the detection device is made of one of the following materials: PE, PP, HDPE, PVC, ABS, PMMA, PC, PPS or PU. The above materials have low density, which can reduce the weight of the detection device and improve the user experience.

[0104] In one embodiment of the present invention, the cavity shell 241 of the battery cavity 24 includes an upper cover 2411 and a lower shell 2412. The upper cover 2411 is part of the circuit board 23, forming a structure in which the upper cover 2411 and the circuit board 23 are integrally formed.

[0105] In another embodiment of the present invention, the bottom of the lower housing 2412 is part of the lower outer housing 22, and the sidewall of the lower housing 2412 protrudes from the lower outer housing 22 and faces the upper outer housing 21, forming a structure in which the lower housing 2412 and the lower outer housing 22 are integrally formed. Preferably, the lower housing 2412 and the lower outer housing 22 are made of the same material, which facilitates integral injection molding during processing.

[0106] In another embodiment of the present invention, the upper cover 2411 is integrally formed with the upper outer shell 21, and the lower shell 2412 is integrally formed with the lower outer shell 22.

[0107] In this embodiment of the invention, the circuit board 23 is made of plastic. Since the upper cover 2411 and lower housing 2412 made of plastic are easily corroded by electrolyte, an electrolyte isolation layer 247 is also required to be provided on the inner side of the upper cover 2411 and lower housing 2412.

[0108] In this embodiment of the invention, the electrolyte barrier layer 247 is TPE (butyl rubber) or PET (polyethylene terephthalate). TPE is a thermoplastic elastomer material with strong processability, while PET itself serves as a container for the electrolyte and can effectively isolate the electrolyte from corrosion of the cavity shell and circuit devices.

[0109] In this embodiment of the invention, the electrolyte barrier layer 247 can be a thin film coated on the inner side of the upper cover 2411 and the lower shell 2412 by deposition or solution method, or it can be a separate closed shell.

[0110] In a preferred embodiment of the present invention, the electrolyte barrier layer 247 is a thin film with a thickness of 300-500 μm. If the thickness of the electrolyte barrier layer 247 is too small, the film material will be wetted and softened by the electrolyte, which will lead to aging of the film material over time. If the thickness is too large, it will occupy the internal space of the chamber. In a more preferred embodiment of the present invention, the thickness of the electrolyte barrier layer 247 is 400 μm.

[0111] In this embodiment of the invention, the battery cavity 24 is further provided with a separator 242, an electrolyte 243, a positive electrode 244, a negative electrode 245 and a conductive sheet 246. The positive electrode 244 and the negative electrode 245 are immersed in the electrolyte 243 and are separated by the separator 242.

[0112] In this embodiment of the invention, the separator 242, the positive electrode 244, and the negative electrode 245 are wound structures, with the separator 242 located between the positive electrode 244 and the negative electrode 245. (Reference) Figure 6 In the cross-sectional view of the battery cavity, the two ends of the separator 242 abut against the electrolyte barrier layer 247 to completely isolate the negative electrode 245 and the positive electrode 244.

[0113] In other embodiments of the present invention, the diaphragm 242, the positive electrode 244, and the negative electrode 245 may also be a stacked structure.

[0114] In this embodiment of the invention, the solute of electrolyte 243 is a lithium salt, such as lithium perchlorate (LiClO4), lithium hexafluorophosphate (LiPF6), or lithium tetrafluoroborate (LiBF4). The solvent is one of ethylene carbonate, propylene carbonate, diethyl carbonate, dimethyl carbonate, methyl ethyl carbonate, phosphorus pentafluoride, hydrofluoric acid, diethyl ether, ethylene carbonate, propylene carbonate, or diethyl carbonate. In a preferred embodiment of the invention, the solvent is an organic solvent, such as diethyl ether, ethylene carbonate, propylene carbonate, or diethyl carbonate.

[0115] In this embodiment of the invention, the main material of the positive electrode 244 is manganese dioxide, and it is manufactured by the following process:

[0116] ① The electrolytic manganese dioxide, conductive agent, and binder are sieved using a sieve or air classifier. Electrolytic manganese dioxide particles smaller than 200 μm are selected, placed in a quartz boat, and heat-treated in a sintering furnace at 200°C for 4 hours. The purpose of this step is to cause the electrolytic manganese dioxide to lose some of its bound water, resulting in a shift in X-ray diffraction peaks, a decrease in interplanar spacing, and an increase in Mn-O bonding strength, thereby enhancing the discharge capacity of the electrolytic manganese dioxide.

[0117] ② After cooling the electrolytic manganese dioxide from step ① to below 60℃, weigh out 9g of electrolytic manganese dioxide, 0.5g of conductive agent with a particle size less than 200µm, and 0.5g of binder with a particle size less than 200µm using an electronic balance. Place them in a grinding dish, mix thoroughly, and then grind manually or electrically to obtain 10g of the grinding mixture. Ensure that the grinding mixture can pass through a 300-mesh (48µm particle size) sieve. The purpose of this step is to ensure the uniformity of the mixture and avoid uneven dispersion of the conductive agent and additives.

[0118] In other embodiments of the present invention, the mass ratio of electrolytic manganese dioxide, conductive agent and binder is not limited to the above-mentioned proportions, and their mass ratios can be 80%-96%, 2%-10% and 2%-10% respectively.

[0119] In a preferred embodiment of the present invention, the conductive agent may be one or more of conductive carbon black, graphite, super p, or carbon nanotubes.

[0120] In a preferred embodiment of the present invention, the adhesive may be one or more of PVDF (polyvinylidene fluoride), polytetrafluoroethylene, and sodium polyacrylate.

[0121] ③ Place the ground mixture in a vacuum oven and heat it to 65°C for 5 hours to dry any moisture that may be present in the mixture, ensuring that the sample is dry and obtaining the positive electrode mixture.

[0122] ④ Add 10g of NMP (N-methylpyrrolidone) solvent to a dry glass bottle, then slowly add the positive electrode mixture to the glass bottle and stir with a magnetic stirrer for 3 hours to ensure uniform mixing, resulting in a positive electrode slurry with a solid content of 50%. The purpose of this step is to ensure uniform dispersion of the components in the positive electrode slurry. The solid content is related to the viscosity of the positive electrode slurry; a 50% solid content positive electrode slurry has better viscosity, resulting in better film formation after coating onto the substrate and reducing powder shedding or cracking.

[0123] ⑤ Use a flatbed coating machine to coat the positive electrode slurry onto the substrate surface to obtain a conductive layer. Then place the conductive layer and the substrate in a vacuum oven to bake at 110°C for 12 hours to ensure that the moisture is completely dried.

[0124] In a preferred embodiment of the present invention, the substrate material is either aluminum foil or nickel foam mesh, with a thickness of 12-18 μm.

[0125] In a more preferred embodiment of the present invention, the substrate material is aluminum foil with a thickness of 15 μm.

[0126] ⑥ Using an electric vertical roller press to roll the conductive layer and substrate can reduce the overall thickness of the conductive layer and substrate to 180-220µm, resulting in the finished positive electrode sheet. By adjusting the operating parameters of the coating machine and the roller press, the thickness of the positive electrode sheet can be controlled, ensuring that the electrode sheet has a relatively complete conductive network while maintaining a high compaction density, thus meeting the working requirements of high-current pulse discharge.

[0127] Continue to refer to Figure 3 The positive electrode 244 obtained by the above processing technology has the same effect as that of Embodiment 1 of the present invention, and will not be described again here.

[0128] In this embodiment of the invention, the negative electrode 245 is mainly a lithium-based material.

[0129] In other embodiments of the present invention, the positive electrode 244 may also be a lithium-containing compound such as lithium manganese oxide, lithium cobalt oxide, or lithium iron phosphate, and the corresponding negative electrode 245 may be graphite.

[0130] In this embodiment of the invention, the diaphragm 242 is made of PE (polyethylene) or PP (polypropylene), and can be a single layer of PE or PP, or a three-layer PE or PP.

[0131] In this embodiment of the invention, one end A of the conductive sheet 246 is fixedly connected to the positive electrode 244 or the negative electrode 245, and the other end B of the conductive sheet 246 is electrically connected to the power electrode 232 of the circuit board 23.

[0132] In this embodiment of the invention, the end B of the conductive sheet 246 is fixedly connected to the power electrode 232 by solder or solder paste.

[0133] In this embodiment of the invention, the power electrode 232 is a metal contact protruding from the circuit board 23 and the electrolyte isolation layer 247, and the connection between the power electrode 232 and the circuit board 23 is coated with sealant.

[0134] In a preferred embodiment of the present invention, end A is fixedly connected to the positive electrode 244 or the negative electrode 245 by solder or solder paste.

[0135] In this embodiment of the invention, the conductive sheet 246 connected to the positive electrode 244 is made of aluminum, and the conductive sheet 246 connected to the negative electrode 245 is made of nickel or nickel-plated copper.

[0136] In this embodiment of the invention, an insulating sealant is applied to the connection between the upper cover 2411 and the lower housing 2412. This serves two purposes: firstly, to fix the upper cover 2411 and the lower housing 2412; and secondly, to prevent the electrolyte 243 from leaking into the outside world and causing unnecessary pollution.

[0137] In a preferred embodiment of the present invention, the insulating sealant is a hot melt adhesive or silicone, both of which have high thermoplasticity and adhesion. The hot melt adhesive also helps in the self-thermal runaway management of the battery.

[0138] Specifically, in this embodiment of the invention, when the lower housing 2412 and the lower outer housing 22 and / or the upper cover 2411 and the upper outer housing 21 are integrally formed simultaneously, the processing flow of the battery cavity 24 is as follows:

[0139] ① Coat the inside of the upper cover 2411 and the lower shell 2412 with PET or TPE material with a thickness of 300-500um, place them in a constant temperature oven and set the temperature to 60-85℃ until the coating material is completely dry;

[0140] ② Place the battery cell (including separator 242, positive electrode 244, negative electrode 245, and conductive sheet 246) inside the lower housing 2412. One end of the conductive sheet 246 is fixedly connected to the positive and negative electrode by soldering or solder paste.

[0141] ③ The lower housing 2412 is placed statically. Electrolyte 243 is injected into the lower housing 2412 using a pipette, and the whole unit is moved to the transition chamber for vacuum static placement to ensure that the electrolyte completely wets the positive and negative electrode plates, thereby improving the electrochemical performance of the battery cavity.

[0142] ④ After the lower housing 2412 has been left to stand, the upper cover 2411 (circuit board 23) is closed. At this time, the other end of the conductive sheet 246 is fixedly connected to the power electrode 232 of the circuit board 23 by soldering or solder paste.

[0143] ⑤ Apply insulating sealant to the connection between the lower housing 2412 and the upper cover 2411 to maintain a tight seal and obtain a complete battery cavity.

[0144] Continue to refer to Figure 5a and Figure 5b In this embodiment of the invention, the sensor 25 includes an external portion 251 and an internal portion 252. The external portion 251 lies flat inside the upper outer casing 21, which reduces the height of the sensor and thus reduces the thickness of the analyte detection device. The internal portion 252 is bent relative to the external portion 251 and passes through a through-hole 211 on the upper outer casing to the outside. In a preferred embodiment of the invention, the internal portion 252 is bent at a 90° angle relative to the external portion 251.

[0145] In this embodiment of the invention, the internal part 252 is inserted under the user's skin to obtain analyte parameter information, and the external part 251 is electrically connected to the circuit board 23 to transmit the analyte parameter information to an external device through the transmitter antenna 231 on the circuit board.

[0146] Third Embodiment

[0147] Figure 7a This is an exploded view of the analyte detection device according to the third embodiment of the present invention; Figure 7b This is an exploded view of the analyte detection device according to the third embodiment of the present invention from another direction; Figure 8 This is a schematic diagram of the Z-Z' cross-sectional structure of the battery cavity in the third embodiment of the present invention.

[0148] Reference Figure 7a , Figure 7b and Figure 8 The detection device includes a housing 30, an electronic circuit 33, a battery cavity 34, and a sensor 35. The housing 30 includes an upper housing 31 and a lower housing 32. The battery cavity 34 is disposed on the lower housing 32, and the sensor 35 is disposed inside the upper housing 31.

[0149] In this embodiment of the invention, the electronic circuit 33 includes at least one electronic component (simplified as a block-shaped object in the figure) and wires (not shown in the figure). The electronic component includes at least a transmitter antenna 331, a power supply electrode 332, and a sensor electrical contact 333, etc.

[0150] In one embodiment of the present invention, the electronic circuit 33 further includes a substrate (not shown in the figure), on which electronic components and wires are fixed. The substrate is embedded in the upper housing 31, that is, the surface of the substrate is flush with the inner surface of the upper housing 31, or the electronic circuit 33 is recessed into the inner surface of the upper housing 31, so as to reduce the volume occupied by the substrate. In this embodiment of the present invention, the substrate can be pre-customized, with electronic components and wires pre-laid on the substrate, and then the substrate is embedded in the inner surface of the upper housing, which can reduce the processing difficulty and processing time of the housing.

[0151] In another embodiment of the present invention, the electronic circuit 33 further includes a substrate (not shown in the figure), on which electronic components and wires are fixed. The substrate is embedded in the lower housing 32, that is, the surface of the substrate is flush with the inner surface of the lower housing 32, or the electronic circuit 33 is recessed into the inner surface of the lower housing 32, so as to reduce the volume occupied by the substrate. In this embodiment of the present invention, the substrate can be pre-customized, with electronic components and wires pre-laid on the substrate, and then the substrate is embedded in the inner side of the lower housing, which can reduce the difficulty and time of housing processing.

[0152] In other embodiments of the present invention, the electronic components and leads are fixed inside the upper or lower outer casing, that is, the electronic circuit 33 is integrally formed with the upper outer casing 31 or the lower outer casing 32. In these embodiments, the electronic circuit 33 no longer requires a substrate as a carrier for the electronic components and leads, further saving space occupied by the electronic circuit and meeting the miniaturization design requirements of analyte detection devices. In these embodiments, the upper or lower outer casing integrally formed with the electronic circuit can be manufactured using processes such as addition, subtraction, layering, paneling, and patterning.

[0153] In this embodiment of the invention, the cavity shell 341 of the battery cavity 34 includes an upper cover 3411 and a lower shell 3412.

[0154] In this embodiment of the invention, except for the power supply electrode 332, the other electronic components and wires are arranged outside the outline of the upper cover 3411 or the lower housing 3412 to avoid the electrolyte 343 from corroding the electronic components and wires.

[0155] In one embodiment of the present invention, the bottom of the lower housing 3412 is part of the lower outer housing 32, and the sidewall of the lower housing 3412 protrudes from the lower outer housing 32 and faces the upper outer housing 31, forming a structure in which the lower housing 3412 and the lower outer housing 32 are integrally formed. Preferably, the lower housing 3412 and the lower outer housing 32 are made of the same material, which facilitates integral injection molding during processing.

[0156] In another embodiment of the present invention, the upper cover 3411 is part of the upper outer shell 31, and the lower shell 3412 is a cavity shell independent of the lower outer shell 32. Preferably, the upper cover 3411 and the upper outer shell 31 are made of the same material, which facilitates integral injection molding during processing.

[0157] In another embodiment of the present invention, the upper cover 3411 is part of the upper outer shell 31, and the bottom of the lower shell 3412 is part of the lower outer shell 32. The sidewall of the lower shell 3412 protrudes from the lower outer shell 32 and faces the upper outer shell 31, forming a structure in which the lower shell 3412 and the lower outer shell 32 are integrally formed. Preferably, the lower shell 3412 and the lower outer shell 32 are made of the same material, and the upper cover 3411 and the upper outer shell 31 are made of the same material, which facilitates integral injection molding during processing.

[0158] In this embodiment of the invention, since the upper cover 3411 and the lower shell 3412 made of plastic are easily corroded by the electrolyte, an electrolyte isolation layer 347 is also required to be provided on the inner side of the upper cover 3411 and the lower shell 3412.

[0159] In this embodiment of the invention, the electrolyte barrier layer 347 is TPE (butyl rubber) or PET (polyethylene terephthalate). TPE is a thermoplastic elastomer material with strong processability, while PET itself serves as a container for the electrolyte and can effectively isolate the electrolyte from corrosion of the cavity shell and circuit devices.

[0160] In this embodiment of the invention, the electrolyte barrier layer 347 can be a thin film coated on the inner side of the upper cover 3411 and the lower shell 3412 by deposition or solution method, or it can be a separate closed shell.

[0161] In a preferred embodiment of the present invention, the electrolyte barrier layer 347 is a thin film with a thickness of 300-500 μm. If the thickness of the electrolyte barrier layer 347 is too small, the film material will be wetted and softened by the electrolyte, which will lead to aging of the film material over time. If the thickness is too large, it will occupy the internal space of the chamber. In a more preferred embodiment of the present invention, the thickness of the electrolyte barrier layer 347 is 400 μm.

[0162] In this embodiment of the invention, the battery cavity 34 is further provided with a separator 342, an electrolyte 343, a positive electrode 344, a negative electrode 345, and a conductive sheet 346. The positive electrode 344 and the negative electrode 345 are immersed in the electrolyte 343 and are separated by the separator 342.

[0163] In this embodiment of the invention, the separator 342, the positive electrode 344, and the negative electrode 345 are wound structures, with the separator 342 located between the positive electrode 344 and the negative electrode 345. (Reference) Figure 8 In the cross-sectional view of the battery cavity, the two ends of the separator 342 abut against the electrolyte barrier layer 347 to completely isolate the negative electrode 345 and the positive electrode 344.

[0164] In other embodiments of the present invention, the diaphragm 342, the positive electrode 344, and the negative electrode 345 may also be a stacked structure.

[0165] In this embodiment of the invention, the solute of electrolyte 343 is a lithium salt, such as lithium perchlorate (LiClO4), lithium hexafluorophosphate (LiPF6), or lithium tetrafluoroborate (LiBF4). The solvent is one of ethylene carbonate, propylene carbonate, diethyl carbonate, dimethyl carbonate, methyl ethyl carbonate, phosphorus pentafluoride, hydrofluoric acid, diethyl ether, ethylene carbonate, propylene carbonate, or diethyl carbonate. In a preferred embodiment of the invention, the solvent is an organic solvent, such as diethyl ether, ethylene carbonate, propylene carbonate, or diethyl carbonate.

[0166] In this embodiment of the invention, the main material of the positive electrode 344 is manganese dioxide, and it is prepared by the following process:

[0167] ① The electrolytic manganese dioxide, conductive agent, and binder are sieved using a sieve or air classifier. Electrolytic manganese dioxide particles smaller than 200 μm are selected, placed in a quartz boat, and heat-treated in a sintering furnace at 200°C for 4 hours. The purpose of this step is to cause the electrolytic manganese dioxide to lose some of its bound water, resulting in a shift in X-ray diffraction peaks, a decrease in interplanar spacing, and an increase in Mn-O bonding strength, thereby enhancing the discharge capacity of the electrolytic manganese dioxide.

[0168] ② After cooling the electrolytic manganese dioxide from step ① to below 60℃, weigh out 9g of electrolytic manganese dioxide, 0.5g of conductive agent with a particle size less than 200µm, and 0.5g of binder with a particle size less than 200µm using an electronic balance. Place them in a grinding dish, mix thoroughly, and then grind manually or electrically to obtain 10g of the grinding mixture. Ensure that the grinding mixture can pass through a 300-mesh (48µm particle size) sieve. The purpose of this step is to ensure the uniformity of the mixture and avoid uneven dispersion of the conductive agent and additives.

[0169] In other embodiments of the present invention, the mass ratio of electrolytic manganese dioxide, conductive agent and binder is not limited to the above-mentioned proportions, and their mass ratios can be 80%-96%, 2%-10% and 2%-10% respectively.

[0170] In a preferred embodiment of the present invention, the conductive agent may be one or more of conductive carbon black, graphite, super p, or carbon nanotubes.

[0171] In a preferred embodiment of the present invention, the adhesive may be one or more of PVDF (polyvinylidene fluoride), polytetrafluoroethylene, and sodium polyacrylate.

[0172] ③ Place the ground mixture in a vacuum oven and heat it to 65°C for 5 hours to dry any moisture that may be present in the mixture, ensuring that the sample is dry and obtaining the positive electrode mixture.

[0173] ④ Add 10g of NMP (N-methylpyrrolidone) solvent to a dry glass bottle, then slowly add the positive electrode mixture to the glass bottle and stir with a magnetic stirrer for 3 hours to ensure uniform mixing, resulting in a positive electrode slurry with a solid content of 50%. The purpose of this step is to ensure uniform dispersion of the components in the positive electrode slurry. The solid content is related to the viscosity of the positive electrode slurry; a 50% solid content positive electrode slurry has better viscosity, resulting in better film formation after coating onto the substrate and reducing powder shedding or cracking.

[0174] ⑤ Use a flatbed coating machine to coat the positive electrode slurry onto the substrate surface to obtain a conductive layer. Then place the conductive layer and the substrate in a vacuum oven to bake at 110°C for 12 hours to ensure that the moisture is completely dried.

[0175] In a preferred embodiment of the present invention, the substrate material is either aluminum foil or nickel foam mesh, with a thickness of 12-18 μm.

[0176] In a more preferred embodiment of the present invention, the substrate material is aluminum foil with a thickness of 15 μm.

[0177] ⑥ Using an electric vertical roller press to roll the conductive layer and substrate can reduce the overall thickness of the conductive layer and substrate to 180-220µm, resulting in the finished positive electrode sheet. By adjusting the operating parameters of the coating machine and the roller press, the thickness of the positive electrode sheet can be controlled, ensuring that the electrode sheet has a relatively complete conductive network while maintaining a high compaction density, thus meeting the working requirements of high-current pulse discharge.

[0178] Continue to refer to Figure 3 The positive electrode 344 obtained by the above processing technology has the same effect as that of Embodiment 1 of the present invention, and will not be described again here.

[0179] In this embodiment of the invention, the negative electrode 345 is mainly a lithium-based material.

[0180] In other embodiments of the present invention, the positive electrode 344 may also be a lithium-containing compound such as lithium manganese oxide, lithium cobalt oxide, or lithium iron phosphate, and the corresponding negative electrode 345 may be graphite.

[0181] In this embodiment of the invention, the diaphragm 342 is made of PE (polyethylene) or PP (polypropylene), and can be a single layer of PE or PP, or a three-layer PE or PP.

[0182] In this embodiment of the invention, one end A of the conductive sheet 346 is fixedly connected to the positive electrode 344 or the negative electrode 345, and the other end B of the conductive sheet 346 is electrically connected to the power electrode 332 of the electronic circuit 33.

[0183] In this embodiment of the invention, the end B of the conductive sheet 346 is fixedly connected to the power electrode 332 by solder or solder paste.

[0184] In this embodiment of the invention, the power electrode 332 is a metal contact protruding from the electronic circuit 33 and the electrolyte isolation layer 347. The connection between the power electrode 332 and the electronic circuit 33 is coated with sealant to prevent leakage of the electrolyte 343.

[0185] In a preferred embodiment of the present invention, end A is fixedly connected to the positive electrode 344 or the negative electrode 345 by solder or solder paste.

[0186] In this embodiment of the invention, the conductive sheet 346 connected to the positive electrode 344 is made of aluminum, and the conductive sheet 346 connected to the negative electrode 345 is made of nickel or nickel-plated copper.

[0187] In this embodiment of the invention, an insulating sealant is applied to the connection between the upper cover 3411 and the lower housing 3412. This serves two purposes: firstly, to fix the upper cover 3411 and the lower housing 3412; and secondly, to prevent the electrolyte 343 from leaking into the outside world and causing unnecessary pollution.

[0188] In a preferred embodiment of the present invention, the insulating sealant is a hot melt adhesive or silicone, both of which have high thermoplasticity and adhesion. The hot melt adhesive also helps in the self-thermal runaway management of the battery.

[0189] Specifically, in this embodiment of the invention, when the lower housing 3412 and the lower outer housing 32 and the upper cover 3411 and the upper outer housing 31 are integrally formed simultaneously, the processing flow of the battery cavity 34 is as follows:

[0190] ① Coat the inside of the upper cover 3411 and the lower shell 3412 with PET or TPE material with a thickness of 300-500um, place them in a constant temperature oven and set the temperature to 60-85℃ until the coating material is completely dry;

[0191] ② The battery cell (including separator 342, positive electrode 344, negative electrode 345, and conductive sheet 346) is placed inside the lower housing 3412. One end of the conductive sheet 346 is fixedly connected to the positive and negative electrode by soldering or solder paste.

[0192] ③ The lower housing 3412 is placed statically. Electrolyte 343 is injected into the lower housing 3412 using a pipette, and the whole unit is moved to the transition chamber for vacuum static placement to ensure that the electrolyte completely wets the positive and negative electrode plates, so as to improve the electrochemical performance of the battery cavity.

[0193] ④ After the lower housing 3412 has been left to stand, the upper cover 3411 is closed. At this time, the other end of the conductive sheet 346 is fixedly connected to the power electrode 332 of the electronic circuit 33 by soldering or solder paste.

[0194] ⑤ Apply insulating sealant to the connection between the lower housing 3412 and the upper cover 3411 to maintain a tight seal and obtain a complete battery cavity.

[0195] Continue to refer to Figure 7a and Figure 7b In this embodiment of the invention, the sensor 35 includes an external portion 351 and an internal portion 352. The external portion 351 lies flat inside the upper outer casing 31, which reduces the height of the sensor and thus reduces the thickness of the analyte detection device. The internal portion 352 is bent relative to the external portion 351 and passes through a through-hole 311 on the upper outer casing to the outside.

[0196] In a preferred embodiment of the present invention, the in vivo portion 352 is bent at 90° relative to the external portion 351.

[0197] In this embodiment of the invention, the internal part 352 is inserted under the user's skin to obtain analyte parameter information, and the external part 351 is electrically connected to the sensor electrical contact 333 to transmit the analyte parameter information to an external device through the transmitter antenna 331.

[0198] In summary, the present invention provides a circuit-embedded analyte detection device, wherein an electronic circuit is disposed inside the upper housing or the lower housing. The electronic circuit includes at least one electronic component, which includes at least a transmitter antenna, to form a highly integrated analyte detection device in which the electronic circuit is embedded with the housing. The electronic circuit occupies less space and meets the miniaturization design requirements of analyte detection devices.

[0199] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A circuit-embedded analytical material detection device, characterized in that, include: The outer casing includes an upper outer casing and a lower outer casing, and a through hole is provided on the upper outer casing. An electronic circuit is disposed in the upper or lower housing in a fitted manner, the electronic circuit including at least one electronic component; The electronic component includes at least a transmitter antenna, which is used to communicate with external devices; The sensor is used to acquire analyte parameter information in the user's body; and A battery, the battery being used to provide electrical power to the electronic circuit; The battery includes a housing, a cell, and an electrolyte, and the housing includes an upper cover and a lower housing. The lower housing is integrally formed with the lower outer shell and the lower housing is part of the lower outer shell, and / or the upper cover is integrally formed with the upper outer shell and the upper cover is part of the upper outer shell.

2. The circuit-embedded analytical material detection device according to claim 1, characterized in that, The electronic circuit also includes a substrate embedded in the inner side of the upper housing or the inner side of the lower housing, and the electronic components and wires are fixed on the substrate.

3. The circuit-embedded analytical material detection device according to claim 1, characterized in that, The electronic circuit is integrally formed with the upper or lower outer casing, and the electronic components and wires are fixed inside the upper or lower outer casing.

4. The circuit-embedded analytical device for detecting materials according to any one of claims 1-3, characterized in that, The battery cell includes a separator, a positive electrode, a negative electrode, and a conductive sheet.

5. The circuit-embedded analytical material detection device according to claim 1, characterized in that, An electrolyte isolation layer is provided inside the cavity shell.

6. The circuit-embedded analytical material detection device according to claim 5, characterized in that, The electrolyte barrier layer is made of TPE or PET material.

7. The circuit-embedded analytical material detection device according to claim 6, characterized in that, The electrolyte insulating layer is a thin film coated on the inner wall of the cavity shell.

8. The circuit-embedded analytical material detection device according to claim 7, characterized in that, The thickness of the electrolyte barrier film is 300-500 μm.

9. The circuit-embedded analytical material detection device according to claim 6, characterized in that, The electrolyte isolation layer is a closed shell independent of the cavity shell.

10. The circuit-embedded analytical material detection device according to claim 4, characterized in that, The electronic component also includes a power electrode. One end A of the conductive sheet is fixedly connected to the positive electrode or the negative electrode, and the other end B of the conductive sheet is electrically connected to the power electrode.

11. The circuit-embedded analytical device for detecting materials according to claim 10, characterized in that, End B of the conductive sheet is fixedly connected to the power electrode by solder or solder paste.

12. The circuit-embedded analytical material detection device according to claim 1, characterized in that, An insulating sealant is applied to the connection between the upper cover and the lower housing.

13. The circuit-embedded analytical device for detecting materials according to claim 12, characterized in that, The insulating sealant is either a hot melt adhesive or silicone.

14. The circuit-embedded analytical material detection device according to claim 1, characterized in that, The sensor includes an inner part and an outer part, the outer part being bent relative to the inner part and laid flat on the inner surface of the upper outer shell, and the inner part passing through the through hole to the outer side of the upper outer shell.

15. The circuit-embedded analytical device for detecting components according to claim 14, characterized in that, The electronic component also includes sensor electrical contacts, and the external portion is electrically connected to the sensor electrical contacts.

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