CN111384460A - Multi-parameter integrated device of ion battery and preparation method thereof - Google Patents
Multi-parameter integrated device of ion battery and preparation method thereof Download PDFInfo
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- CN111384460A CN111384460A CN201811631129.7A CN201811631129A CN111384460A CN 111384460 A CN111384460 A CN 111384460A CN 201811631129 A CN201811631129 A CN 201811631129A CN 111384460 A CN111384460 A CN 111384460A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention belongs to the field of battery detection, and particularly relates to an ion battery multi-parameter integrated device, which comprises an ion battery and is characterized in that: the integrated sensor is arranged on the polyimide substrate, the polyimide substrate and the integrated sensor are arranged in the ion battery, the integrated sensor is composed of a current density sensor, a humidity sensor, a charge state sensor, a gas sensor and a thickness sensor, the current density sensor and the humidity sensor are arranged on one side of the polyimide substrate, and the charge state sensor, the gas sensor and the thickness sensor are arranged on the other side of the polyimide substrate. The current density sensor, the humidity sensor, the state of charge sensor, the gas sensor, the thickness sensor and the lead wire have polyimide protective films on their surfaces. The device has the advantages of wide application range, simplicity, convenience, feasibility, large-scale production and lower cost, and can be adapted to the lithium ion batteries in a winding type, a laminated type or other modes.
Description
Technical Field
The invention belongs to the field of battery detection, and particularly relates to an ion battery multi-parameter integrated device and a testing method thereof.
Background
The lithium ion battery has the advantages of high energy density, high specific power, small self-discharge rate, long service life, wide application temperature range, quick charging, high energy conversion efficiency, no environmental pollution and the like, and is widely applied in the fields of digital electronics, power batteries and the like. The lithium ion battery can cause the temperature rise and the temperature distribution to be uneven along with the generation of heat in the charging and discharging process, and then the temperature inside the battery and the distribution of each parameter related to the lithium ion concentration can be influenced, thereby accelerating the attenuation of the battery. When the temperature of the battery is higher than 60 ℃, the interface stability of the battery material is reduced, the side reaction in the circulation process is increased, the performance of the battery is deteriorated, the safety is reduced, when the temperature of the battery is continuously increased or overcharged and overdischarged, the electrolyte can be vaporized or decomposed to cause the internal gas expansion of the battery, if the heat is further accumulated, the thermal runaway can be caused, and further, the safety accidents such as fire, explosion and the like are caused. The reliability, the service life and the safety of the battery can be improved by mastering the optimal operation condition of the lithium ion battery and pertinently making an application strategy, so that the real-time online monitoring of the current density, the humidity, the charge state, the gas and the thickness in the lithium ion battery plays a vital role in determining the performance and the application boundary of the battery, researching the mechanism and the like.
However, lithium ion batteries produced in the current market are sealed, and no device for detecting current density, humidity, state of charge, gas and thickness is arranged in the batteries, so that accurate acquisition of various parameters in the batteries is difficult. Most researchers adopt a traditional method to embed a micro temperature, pressure or stress sensor at a single point or multiple points into a specified position inside a lithium ion battery so as to explore a parameter change rule in the operation process of the lithium ion battery and improve the application temperature range of the performance of the lithium ion battery. The methods are difficult to process and manufacture, cannot accurately detect the internal designated position of a single lithium ion battery, cannot find abnormality in time, have poor implantation position precision, complex process and high manufacturing cost of the micro sensor, damage the air tightness of the whole structure of the lithium ion battery, even reduce the effective area of an electrode pair where the sensor is positioned, and further influence the performance of the lithium ion battery. In addition, the parameters in the lithium ion battery are measured one by one, which undoubtedly increases complexity and workload, and has great influence on the stability of the performance of the lithium ion battery, for example, CN201220236884.7 discloses a detection device for gas generation in the lithium ion battery, CN201310094583.4 discloses a device for measuring the thickness of the battery, CN201410637433.8 discloses a sensor for measuring the temperature, humidity, heat flux density and current density in the fuel cell, which is mainly manufactured by an evaporation coating method, because the intermediate protective layer covers 10 layers of films, the mutual measurement data is influenced. Therefore, it is very necessary to manufacture a measuring device capable of simultaneously measuring a plurality of parameters which do not interfere with each other inside the lithium ion battery on line.
The integrated sensor for the current density, the humidity, the charge state, the gas and the thickness in the lithium ion battery can realize the synchronous online measurement of the distribution conditions of the current density, the humidity, the charge state, the gas and the thickness in different thickness directions in the lithium ion battery, is independent of the lithium ion battery to be measured, does not need to specially modify the structure of the lithium ion battery to be measured, reduces the damage to the performance of the lithium ion battery, and further reduces the cost and the workload increase caused by multi-parameter distribution measurement.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a real-time online accurate detection and reliable ion battery multi-parameter integration device and a test method thereof so as to realize the distribution measurement of current density, humidity, charge state, gas and thickness in an ion battery.
The technical scheme of the invention is as follows:
the multi-parameter integration device for the ion battery comprises the ion battery (1), wherein an integrated sensor (3) is arranged on a polyimide substrate (2), the polyimide substrate (2) and the integrated sensor (3) are arranged in the ion battery (1), the integrated sensor (3) consists of a current density sensor (6), a humidity sensor (7), a charge state sensor (8), a gas sensor (9) and a thickness sensor (10), the current density sensor (6) and the humidity sensor (7) are arranged on one side of the polyimide substrate (2), and the charge state sensor (8), the gas sensor (9) and the thickness sensor (10) are arranged on the other side of the polyimide substrate (2); one end of the lead (4) is respectively connected with the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9) and the thickness sensor (10), and the other end of the lead (4) extends to the lead port (5); the surfaces of the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9), the thickness sensor (10) and the lead (4) are provided with polyimide protective films (11).
Further, the shape of the polyimide substrate (2) corresponds to the integrated sensor (3) and the lead (4).
Further, the lead port (5) is externally connected with data acquisition equipment.
Further, the packaging shape of the ion battery is one of a cylinder, a square and a soft package; the positive and negative pole pieces in the ion battery are in one of winding and lamination. The positive and negative pole pieces are composed of a positive pole piece of the positive pole and a negative pole piece of the negative pole.
Further, the ion battery is a lithium ion battery.
Further, the width of the lead (4) is 0.1-0.2 mm.
Further, the integrated sensor (3) is arranged at one of the positions between the positive plate and the diaphragm, between the negative plate and the diaphragm and between the two diaphragms; or the integrated sensor (3) is arranged at one of the positive pole, the negative pole, the middle position of the positive pole and the negative pole, the tail end of the positive pole and the tail end of the negative pole.
A method of making an integrated device, comprising the steps of:
firstly, arranging a current density sensor (6) and a humidity sensor (7) on one side of a polyimide substrate (2) at intervals, and arranging a charge state sensor (8), a gas sensor (9) and a thickness sensor (10) on the other side of the polyimide substrate (2) at intervals;
secondly, one end of a lead (4) is respectively connected with a current density sensor (6), a humidity sensor (7), a charge state sensor (8), a gas sensor (9) and a thickness sensor (10), and the other end of the lead (4) extends to a lead port (5);
thirdly, cutting off the polyimide substrate (2) which is not covered by the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9), the thickness sensor (10) and the lead (4);
fourthly, attaching polyimide protective films (13) to the surfaces of the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9), the thickness sensor (10) and the lead (4) to obtain a test detection laminate;
and fifthly, sequentially putting the test detection laminate into a battery shell, injecting liquid, sealing, forming and externally packaging to obtain the integrated device.
Furthermore, the polyimide protective film (11) on the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9) and the thickness sensor (10) measuring head is removed, and the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9) and the thickness sensor (10) measuring head are protected.
The principle is as follows: fixing the current density and humidity micro test sensors at the specified positions on one surface of the polyimide substrate at the minimum distance without mutual interference, and leading sensor lead wires to lead wire ports 5 at the same side of the substrate at the minimum distance without mutual interference; fixing the charge state, gas and thickness micro test sensors at the same positions of the other surface of the polyimide substrate as the current density and humidity micro test sensors at the minimum distance without mutual interference, and leading wires of the charge state, gas and thickness micro test sensors to a lead port 5 at the same side of the substrate at the minimum distance without mutual interference; for the influence of measuring device to the electrode pair performance of place thickness when very big limit reduces battery internal test, with polyimide basement and protection film excision outside sensor and the lead wire position, leave blank area, place at the assigned position for guaranteeing that the sensor is accurate, the size of test detection layer board is confirmed according to the size of the lithium ion battery internal positive plate that awaits measuring. In the manufacturing process of the dry electric core, the test detection laminate is placed at a set position, and a finished product of the lithium ion battery with the integrated test sensor device of current density, humidity, charge state, gas and thickness is prepared after the steps of casing, liquid injection, sealing, formation, external packaging and the like, and the whole lithium ion battery is completely sealed. One end of the lead (4) is connected with the wiring position of each sensor, the other end of the lead (4) extends out of the shell through a lead port (5) to be connected with a data acquisition device, relevant numerical values of current density, humidity, charge state, gas and thickness in the battery are transmitted to a data acquisition instrument, and the change condition of each parameter in the battery can be analyzed in real time; the technical scheme is mainly used for detection and inspection, and can monitor the change and distribution conditions of the current density, humidity, charge state, gas and thickness in the lithium ion battery on line in a laboratory and a finished automobile; therefore, the battery can be timely and accurately evaluated by detection personnel and a thermal management system, guidance is provided for improving the structure of the battery, improving the cycle performance, the service life and the reliability of the battery, detection errors are reduced, abnormality can be timely found, and safety problems are avoided.
In the technical scheme, the lead is connected into the battery safety control circuit, so that abnormal phenomena in the use of the lithium ion battery can be accurately and timely found, early warning is carried out, the circuit is cut off, and abuse problems are prevented. The position of the ion battery multi-parameter integration device can be placed in the lithium ion battery (1) or on the surface of the lithium ion battery (1).
Defining:
blank area: except the integrated sensor and the lead wire, the redundant polyimide film substrate and the polyimide protective layer are removed to form a hollow part in the battery.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention realizes the synchronous joint measurement of the current density, the humidity, the charge state, the gas and the thickness in the lithium ion battery;
2. the device is placed in the lithium ion battery with the designated thickness, the structure of the device is independent from the lithium ion battery to be tested, the sensor is accurately positioned, and the influence on the performance and the packaging of the battery is reduced; meanwhile, the device has the advantages of wide application range, simplicity, convenience, feasibility, large-scale production and lower cost, and can be adapted to the lithium ion batteries in a winding type, a laminated type or other modes.
3. According to the invention, the current density sensor and the humidity sensor are arranged on one side of the polyimide substrate, and the charge state sensor, the gas sensor and the thickness sensor are arranged on the other side of the polyimide substrate, so that mutual interference is avoided.
Drawings
Fig. 1 is a schematic diagram of the multi-point arrangement of square laminated and wound lithium ion batteries with tabs at the same side of the multi-parameter integration device for the ion battery of the invention;
fig. 2 is a schematic diagram of the multi-point arrangement of the square laminated and wound lithium ion battery with the tab at the opposite side of the multi-parameter integration device for the ion battery of the invention;
FIG. 3 is a schematic diagram of a single point arrangement of the multi-parameter integrated device of the ion battery of the present invention;
FIG. 4 is a schematic cross-sectional view of a polyimide passivation film on a polyimide substrate and leads on both sides of the polyimide substrate according to the present invention;
FIG. 5 is a schematic diagram of a single point arrangement of a current density sensor and a humidity sensor on one side of a polyimide substrate according to the present invention;
FIG. 6 is a schematic diagram of a single point arrangement of a thickness sensor, a gas sensor, and a state of charge sensor on another side of a polyimide substrate according to the present invention;
wherein: 1. ion battery, 2, polyimide substrate, 3, integrated sensor, 4, lead, 5, lead port, 6, current density sensor, 7, humidity sensor, 8, state of charge sensor, 9, gas sensor, 10, thickness sensor, 11, polyimide protective film, 12, blank area.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings.
Referring to fig. 1-2 (fig. 1 shows a tab on the same side, and fig. 2 shows a tab on the opposite side), the integrated sensor composed of the current density sensor, the humidity sensor, the state of charge sensor, the gas sensor and the thickness sensor in the lithium ion battery of the present invention is placed at the designated thickness position of the lithium ion battery 1, the shape of the lithium ion battery 1 may be cylindrical, square or soft, and the positive and negative electrode plates are formed into a winding or lamination. The integrated device comprises the following manufacturing steps:
firstly, arranging a current density sensor (6) and a humidity sensor (7) on one side of a polyimide substrate (2) at intervals, and arranging a charge state sensor (8), a gas sensor (9) and a thickness sensor (10) on the other side of the polyimide substrate (2) at intervals;
secondly, one end of a lead (4) is respectively connected with a current density sensor (6), a humidity sensor (7), a charge state sensor (8), a gas sensor (9) and a thickness sensor (10), and the other end of the lead (4) extends to a lead port (5);
thirdly, cutting off the polyimide substrate (2) which is not covered by the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9), the thickness sensor (10) and the lead (4);
fourthly, attaching polyimide protective films (13) to the surfaces of the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9), the thickness sensor (10) and the lead (4) to obtain a test detection laminate;
and fifthly, sequentially putting the test detection laminate into a battery shell, injecting liquid, sealing, forming and externally packaging to obtain the integrated device.
Optimally, the integrated sensor is arranged in one of a positive end position, a negative end position, a center position, a positive end position and a negative end position. In addition, the orientation of the two sides of the integrated sensor is determined according to the test requirement, and the two sides can be oriented to the positive electrode, the diaphragm and the negative electrode. The integrated sensor is placed between the positive plate and the diaphragm, between the negative plate and the diaphragm and between the two diaphragms according to the test requirements.
Referring to fig. 3, the lithium ion battery includes an integrated sensor (3) including a current density sensor, a humidity sensor, a state of charge sensor, a gas sensor, and a thickness sensor, wherein the current density sensor (6) and the humidity sensor (7) are disposed on one side of a polyimide substrate (2) at intervals, and the state of charge sensor (8), the gas sensor (9), and the thickness sensor (10) are disposed on the other side of the polyimide substrate (2) at intervals. The sensors arranged in a single point are arranged at the minimum distance without mutual interference. The peripheral size of the polyimide substrate (2) is determined according to a positive plate of the lithium ion battery (1) to be tested except for a lead port (5) for leading out the lithium ion battery (1), and redundant polyimide substrates (2) and polyimide protective films (1) are removed except for the positions of the sensors and leads (4) inside the polyimide substrate to reduce the influence on the performance of the lithium ion battery (1).
Referring to fig. 4, the width of the lead (4) of the integrated sensor (3) is 0.1-0.2mm, and the lead can be realized by printed circuit, spraying, vacuum coating and 3D printing, and the material of the lead (4) can be copper, gold and platinum metals, or can be composite metals such as copper gold plating and copper nickel plating. The surface of the lead wire (4) is coated with a polyimide protective film (13) which is consistent with the shape and the position of the polyimide film substrate (2) but is shorter than the connecting part of the lead wire port (5) and the external circuit data acquisition device. The thickness of the polyimide substrate (2) is 0.1-0.3mm, the thickness of the polyimide protective film (11) is 0.05-0.2mm, the number of the lead ports (5) for leading out the lithium ion battery (1) can be 1 or more, and the positions can be set according to requirements.
Referring to fig. 5, in the integrated sensor (3), the current density sensor (6) and the humidity sensor (7) may be arranged according to different detection principles: for example, the humidity 7 microsensor may be a resistive, capacitive or ceramic multifunction sensor.
Referring to fig. 6, in the integrated detection sensor (3), the micro sensors of the charge state 8, the gas 9 and the thickness 10 on the other side of the polyimide film substrate (2) can be arranged according to different detection principles: the gas micro-sensor may be a gas-sensitive gas sensor or an electrochemical gas sensor; each sensor can be connected with a data acquisition system by adopting a wireless technology. The method comprises the steps of removing a polyimide protective film (11) on a current density, humidity, charge state and gas microsensor measuring head, and carrying out protection treatment on the surface of the microsensor measuring head without influencing the test according to the test principle, wherein the polyimide protective film (11) is removed, for example, the surface of the measuring head is printed or sprayed with a layer of copper, gold or nickel with the same thickness as that of a polyimide protective film (13), and the shape of the coating is consistent with that of the measuring head of each sensor (10) or treated by other methods, so that the sensor measuring head can be in contact with a positive plate, a negative plate or a diaphragm of a measured position.
The device is placed in the lithium ion battery with the specified thickness, the structure of the device is independent from the lithium ion battery to be measured, the sensor is accurately positioned, the influence on the performance and the packaging of the battery is reduced, and the stability of the performance of the lithium ion battery is ensured; meanwhile, the device is wide in application range, simple and easy to implement, capable of realizing large-scale production and low in cost, can be adapted to a winding type lithium ion battery, a laminated type lithium ion battery or a lithium ion battery with other modes, single-point or multi-point real-time online monitoring on single or multiple parameters of current density, humidity, charge state, gas and thickness in the lithium ion battery is realized, and the integrated test sensor device can be placed in the lithium ion battery (1) or on the surface of the lithium ion battery (1).
The current density micro sensor, the humidity micro sensor, the charge state micro sensor, the gas sensor and the thickness micro sensor are all connected with a data acquisition system by adopting a wireless technology.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An ion battery multi-parameter integrated device comprises an ion battery (1), and is characterized in that: the ion battery is characterized in that an integrated sensor (3) is arranged on a polyimide substrate (2), the polyimide substrate (2) and the integrated sensor (3) are arranged in an ion battery (1), the integrated sensor (3) is composed of a current density sensor (6), a humidity sensor (7), a charge state sensor (8), a gas sensor (9) and a thickness sensor (10), the current density sensor (6) and the humidity sensor (7) are arranged on one side of the polyimide substrate (2), and the charge state sensor (8), the gas sensor (9) and the thickness sensor (10) are arranged on the other side of the polyimide substrate (2); one end of the lead (4) is respectively connected with the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9) and the thickness sensor (10), and the other end of the lead (4) extends to the lead port (5); the surfaces of the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9), the thickness sensor (10) and the lead (4) are provided with polyimide protective films (11).
2. The multi-parameter integrated device of claim 1, wherein: the shape of the polyimide substrate (2) corresponds to the integrated sensor (3) and the lead (4).
3. The multi-parameter integrated device of claim 1, wherein: the lead port (5) is externally connected with data acquisition equipment.
4. The multi-parameter integrated device of claim 1, wherein: the packaging shape of the ion battery is one of a cylinder, a square and a soft package; the positive and negative pole pieces in the ion battery are in one of winding and lamination.
5. The multi-parameter integrated device of claim 1, wherein: the ion battery is a lithium ion battery.
6. The multi-parameter integrated device of claim 1, wherein: the width of the lead (4) is 0.1-0.2 mm.
7. The multi-parameter integrated device of claim 1, wherein: the integrated sensor (3) is arranged between the positive plate and the diaphragm, between the negative plate and the diaphragm and between the two diaphragms; or the integrated sensor (3) is arranged at one of the positive pole, the negative pole, the middle position of the positive pole and the negative pole, the tail end of the positive pole and the tail end of the negative pole.
8. A method of manufacturing an integrated device according to any of claims 1-7, characterized in that the following steps are used:
firstly, arranging a current density sensor (6) and a humidity sensor (7) on one side of a polyimide substrate (2) at intervals, and arranging a charge state sensor (8), a gas sensor (9) and a thickness sensor (10) on the other side of the polyimide substrate (2) at intervals;
secondly, one end of a lead (4) is respectively connected with a current density sensor (6), a humidity sensor (7), a charge state sensor (8), a gas sensor (9) and a thickness sensor (10), and the other end of the lead (4) extends to a lead port (5);
thirdly, cutting off the polyimide substrate (2) which is not covered by the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9), the thickness sensor (10) and the lead (4);
fourthly, attaching polyimide protective films (11) to the surfaces of the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9), the thickness sensor (10) and the lead (4) to obtain a test detection laminate;
and fifthly, sequentially putting the test detection laminate into a battery shell, injecting liquid, sealing, forming and externally packaging to obtain the integrated device.
9. The method of claim 8, wherein: and removing the polyimide protective film (11) on the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9) and the thickness sensor (10) measuring head, and protecting the current density sensor (6), the humidity sensor (7), the charge state sensor (8), the gas sensor (9) and the thickness sensor (10) measuring head.
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