CN111384461A - 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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- CN111384461A CN111384461A CN201811631372.9A CN201811631372A CN111384461A CN 111384461 A CN111384461 A CN 111384461A CN 201811631372 A CN201811631372 A CN 201811631372A CN 111384461 A CN111384461 A CN 111384461A
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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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- 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
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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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
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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 consists of a temperature sensor, a voltage sensor, a pressure sensor and a stress sensor, the temperature sensor and the voltage sensor are arranged on one side of the polyimide substrate, and the pressure sensor and the stress sensor are arranged on the other side of the polyimide substrate; one end of the lead is respectively connected with the temperature sensor, the voltage sensor, the pressure sensor and the stress sensor, and the other end of the lead extends to a lead port; the temperature sensor, the voltage sensor, the pressure sensor, the stress sensor and the lead wire have polyimide protective films on their surfaces. The device has wide application range, is anti-interference, is simple and easy to operate, can be produced in large scale, and can be adapted to the lithium ion battery 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 internal temperature, the voltage, the pressure and the stress of 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 devices for detecting temperature, voltage, pressure and stress are not 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, each parameter in the lithium ion battery is measured one by one, so that complexity and workload are increased undoubtedly, and meanwhile, stability of performance of the lithium ion battery is also greatly influenced, for example, CN201220236884.7 discloses a detection device for gas generation in the lithium ion battery, CN201310094583.4 discloses a device for measuring thickness of the battery, CN201210158700.4 discloses a method for measuring temperature of the lithium ion battery, CN201610751332.2 discloses a method and a device for monitoring temperature in the square lithium ion battery on line, CN201711343451.5 discloses a lithium battery capable of detecting internal temperature and pressure, CN201410637433.8 discloses a sensor for measuring internal temperature, humidity, heat flow density and current density of the fuel battery in a combined manner, and the sensor is mainly manufactured by an evaporation coating method, and since the sensor is coated with 10 layers of films, a middle protective layer influences mutual measurement data. 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 temperature, the voltage, the pressure and the stress in the lithium ion battery can realize the synchronous online measurement of the distribution conditions of the temperature, the voltage, the pressure and the stress of different thickness surfaces in the lithium ion battery, is independent of the lithium ion battery to be measured, does not need to carry out special modification on the structure of the lithium ion battery to be measured, and reduces the damage to the performance of the lithium ion battery, thereby reducing 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, anti-interference and reliable ion battery multi-parameter integrated device and a test method thereof so as to realize distribution measurement of temperature, voltage, pressure and stress 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 temperature sensor (6), a voltage sensor (7), a pressure sensor (8) and a stress sensor (9), the temperature sensor (6) and the voltage sensor (7) are arranged on one side of the polyimide substrate (2), and the pressure sensor (8) and the stress sensor (9) are arranged on the other side of the polyimide substrate (2); one end of the lead (4) is respectively connected with the temperature sensor (6), the voltage sensor (7), the pressure sensor (8) and the stress sensor (9), and the other end of the lead (4) extends to the lead port (5); the surfaces of the temperature sensor (6), the voltage sensor (7), the pressure sensor (8), the stress sensor (9) and the lead (4) are provided with polyimide protective films (10).
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 temperature sensor (6) and a voltage sensor (7) at one side of a polyimide substrate (2) at intervals, and arranging a pressure sensor (8) and a stress sensor (9) at the other side of the polyimide substrate (2) at intervals;
secondly, one end of a lead (4) is respectively connected with a temperature sensor (6), a voltage sensor (7), a pressure sensor (8) and a stress sensor (9), 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 temperature sensor (6), the voltage sensor (7), the pressure sensor (8), the stress sensor (9) and the lead (4);
fourthly, attaching a polyimide protective film (10) to the surfaces of the temperature sensor (6), the voltage sensor (7), the pressure sensor (8), the stress sensor (9) 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 (10) on the measuring head of the temperature sensor (6), the voltage sensor (7), the pressure sensor (8) and the stress sensor (9) is removed, the surfaces of the measuring head of the temperature sensor (6), the voltage sensor (7), the pressure sensor (8) and the stress sensor (9) are coated with a layer of copper, gold and nickel coating with the same thickness as that of the polyimide protective film (10) by printing or spraying, and the shape of the coating is consistent with that of the measuring head of the temperature sensor (6), the voltage sensor (7), the pressure sensor (8) and the stress sensor (9).
The principle is as follows: fixing the temperature and voltage micro sensors at the designated positions on one surface of the polyimide substrate at the minimum distance without mutual interference, and leading the sensor lead wires to lead wire ports (5) at the same side of the substrate at the minimum distance without mutual interference; fixing the pressure and stress micro sensors on the other surface of the polyimide substrate at the same positions as the temperature and voltage micro sensors at the minimum distance without mutual interference, and leading lead wires of the pressure and stress micro test sensors to lead wire ports (5) at the same side of the substrate at the minimum distance without mutual interference; in order to greatly reduce the influence of a measuring device on the performance of the electrode with the thickness when the battery is tested inside, the polyimide substrate and the protective film outside the positions of the sensor and the lead are cut off, and a blank area is reserved; in order to ensure that the sensor is accurately placed at a specified position, the size of the test detection layer plate is determined according to the size of the positive plate inside the lithium ion battery to be tested. In the manufacturing process of the dry electric core, the test detection laminate is placed at a certain position, and a finished product of the lithium ion battery with the integrated test sensor device with temperature, voltage, pressure and stress 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, and relevant values of temperature, voltage, pressure and stress in the battery are transmitted to a data acquisition instrument, so that 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 internal temperature, voltage, pressure and stress of 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 synchronous joint measurement of the internal temperature, voltage, pressure and stress of 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 temperature sensor (6) and the voltage sensor (7) are arranged on one side of the polyimide substrate, and the pressure sensor (8) and the stress sensor (9) are arranged on the other side of the polyimide substrate, so that mutual interference is avoided.
Drawings
Fig. 1 is a schematic diagram of a square laminated and wound lithium ion battery multi-point arrangement of tabs on the same side of an ion battery multi-parameter integration device according to the present invention;
fig. 2 is a schematic diagram of a square laminated and wound lithium ion battery multi-point arrangement of the multi-parameter integration device of the ion battery with the tab at the opposite side;
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 temperature sensor and a voltage 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 pressure sensor and a stress 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, temperature sensor, 7, voltage sensor, 8, pressure sensor, 9, stress sensor, 10, polyimide protective film, 11, blank area.
Detailed Description
The technical solution of the present invention is further described below with reference to fig. 1 to 6.
Referring to fig. 1-2 (fig. 1 shows that the tab is led out from the same side, and fig. 2 shows that the tab is led out from the opposite side), the integrated sensor composed of the temperature sensor (6), the voltage sensor (7), the pressure sensor (8) and the stress sensor (9) in the lithium ion battery of the present invention is placed at the position of the designated thickness of the lithium ion battery (1), the lithium ion battery (1) can be cylindrical, square or soft, and the positive and negative electrode plates are wound or laminated. The integrated device comprises the following manufacturing steps:
firstly, arranging a temperature sensor (6) and a voltage sensor (7) at one side of a polyimide substrate (2) at intervals, and arranging a pressure sensor (8) and a stress sensor (9) at the other side of the polyimide substrate (2) at intervals;
secondly, one end of a lead (4) is respectively connected with a temperature sensor (6), a voltage sensor (7), a pressure sensor (8) and a stress sensor (9), 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 temperature sensor (6), the voltage sensor (7), the pressure sensor (8), the stress sensor (9) and the lead (4);
fourthly, attaching a polyimide protective film (10) to the surfaces of the temperature sensor (6), the voltage sensor (7), the pressure sensor (8), the stress sensor (9) 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 integrated sensor (3) is composed of a temperature sensor (6), a voltage sensor (7), a pressure sensor (8) and a stress sensor (9) inside the lithium ion battery, wherein the temperature sensor (6) and the voltage sensor (7) are arranged on one side of the polyimide substrate (2) at intervals, and the pressure sensor (8) and the stress sensor (9) are arranged 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 layers (10) 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 (10) 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 (10) 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 temperature sensor (6) and the voltage sensor (7) on one side of the polyimide substrate (2) are arranged according to different test principles: for example, the temperature sensor (6) is one of a thermistor, a T/K/J/E type thermocouple and an optical fiber temperature sensor. The measuring head of the voltage sensor (7) can be made of copper, gold and platinum with good conductivity, the polyimide protective film (10) on the measuring head of the voltage sensor (7) is removed, a layer of copper, gold or nickel with the same thickness as the polyimide protective film (10) is printed or sprayed on the surface of the measuring head, the shape of the coating is consistent with that of the measuring head of the voltage sensor (7), and the measuring head of the voltage sensor (7) can be ensured to be in contact with the anode, the cathode or the diaphragm of a measured position.
Referring to fig. 6, in the integrated sensor (3), the pressure sensor (8) and the stress sensor (9) on the other side of the polyimide substrate (2) are also arranged according to different testing principles, for example, the pressure sensor (8) may be an optical fiber pressure sensor or a strain gauge pressure sensor.
The device can be placed in the lithium ion battery with any specified thickness, has an independent structure from the lithium ion battery to be tested, has accurate positioning of the micro sensor, reduces the influence on the performance and the packaging of the battery, and ensures the stability of each performance of the lithium ion battery; meanwhile, the device has wide application range, is simple and easy to implement, can be produced in a large scale, has lower cost, can be adapted to cylindrical, square and soft package lithium ion batteries in a winding type, laminated type or other modes, realizes the real-time online monitoring of single or multiple parameters of temperature, voltage, pressure and stress inside the lithium ion batteries, can be used for finding abnormality in time in laboratories, systems and vehicles and blocking safety accidents, and the position of the integrated test sensor device can be placed inside the lithium ion battery 1 and also can be placed on the surface of the lithium ion battery 1.
Wherein the temperature sensor (6), the voltage sensor (7), the pressure sensor (8) and the stress sensor (9) are micro sensors, namely a temperature micro sensor, a voltage micro sensor, a pressure micro sensor and a stress micro sensor.
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 (10)
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 temperature sensor (6), a voltage sensor (7), a pressure sensor (8) and a stress sensor (9), the temperature sensor (6) and the voltage sensor (7) are arranged on one side of the polyimide substrate (2), and the pressure sensor (8) and the stress sensor (9) are arranged on the other side of the polyimide substrate (2); one end of the lead (4) is respectively connected with the temperature sensor (6), the voltage sensor (7), the pressure sensor (8) and the stress sensor (9), and the other end of the lead (4) extends to the lead port (5); the surfaces of the temperature sensor (6), the voltage sensor (7), the pressure sensor (8), the stress sensor (9) and the lead (4) are provided with polyimide protective films (10).
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 temperature sensor (6) and a voltage sensor (7) at one side of a polyimide substrate (2) at intervals, and arranging a pressure sensor (8) and a stress sensor (9) at the other side of the polyimide substrate (2) at intervals;
secondly, one end of a lead (4) is respectively connected with a temperature sensor (6), a voltage sensor (7), a pressure sensor (8) and a stress sensor (9), 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 temperature sensor (6), the voltage sensor (7), the pressure sensor (8), the stress sensor (9) and the lead (4);
fourthly, attaching a polyimide protective film (10) to the surfaces of the temperature sensor (6), the voltage sensor (7), the pressure sensor (8), the stress sensor (9) 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. A method of manufacturing an integrated device according to claim 8, wherein: the polyimide protective film (10) on the measuring heads of the temperature sensor (6), the voltage sensor (7), the pressure sensor (8) and the stress sensor (9) is removed, a metal coating with the thickness the same as that of the polyimide protective film (10) is printed or sprayed on the measuring head surfaces of the temperature sensor (6), the voltage sensor (7), the pressure sensor (8) and the stress sensor (9), and the shape of the coating is the same as that of the measuring heads of the temperature sensor (6), the voltage sensor (7), the pressure sensor (8) and the stress sensor (9).
10. A method of manufacturing an integrated device according to claim 9, wherein: the metal is one of copper, gold and nickel.
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Cited By (4)
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| CN112433166A (en) * | 2020-11-22 | 2021-03-02 | 同济大学 | Multi-dimensional detection method and structure for internal failure reaction of lithium ion power battery |
| CN113078423A (en) * | 2021-03-30 | 2021-07-06 | 国联汽车动力电池研究院有限责任公司 | Voltage-temperature coupling measurement method and device |
| CN114152883A (en) * | 2021-11-30 | 2022-03-08 | 同济大学 | Storage battery internal state measuring device and soft package lithium ion battery |
| CN114656918A (en) * | 2022-04-21 | 2022-06-24 | 合肥国轩高科动力能源有限公司 | Insulating glue solution for coating blank edge of lithium ion battery positive plate and preparation method |
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